Optical compressor circuit

The Bumblebee starts with an optical compressor circuit that adds sustain - which enables a smoother, longer swell. Set below 50% for more transparent settings and above 50% for more sonically apparent compression. Forget the clones - the Frantone Sandwich is a totally new concept in analog optical compression. Guitar Compressor Sustain Pedals Achieve the highest levels of tonal consistency and dynamic control with a Compression/Sustain effect from AMS. Gas leaks that are invisible to the naked eye look like smoke on infrared optical gas imaging cameras, making them • The optical oil level sensor is mounted in the compressor body at the lowest point location at which the compressor can safely be operated. I wanted this Ross Compressor Clone to be the best possible compressor available today. If you’re handy with a soldering iron, and you’re willing to put in the time, this is your ticket to some expensive tones. Dynamic range compression (DRC) or simply compression is an audio signal processing Optical compressors use a photoresistor and a small lamp ( Incandescent, LED or Some compressors, however, have the attack and release times determined by the circuit design and these cannot be adjusted by the user. An optical compressor (also known as a leveling amplifier) is a compressor that uses an electro optical attenuator & a photo conductive cell to monitor and control the dynamics & amplitude of processed program material (audio). the optical compressor circuit (LED or lamp), which makes the attack  I have alot more interest at this time in an optical compressor then a vari-mu. This is done by Whether you’re just looking to dial in a smoother sound or keep the front end of your amp from clipping, an optical compressor is just the thing. This mini audio compressor circuit use only one active component T1. One of the first types of compressor offered was a so-called optical compressor, as made famous by compressors such as the Teletronix LA-2A. The hardware unit is an optical‑based compressor with valve electronics, so if you want to try to emulate it, the first thing to do is to select Opto from the Circuit  What's the difference between optical compressors and other types of history has buried those optical circuits that didn't sound good, so we're now left with  Reading in those keyboard and production magazines i found an article about legendary optical compressors – very expensive, very few knobs. He explains that gain reduction in this type of circuit is achieved by relation between a light bulb and photocell. It delivers the vintage compression and warmth of its ancestor thanks to the optical coupler response, side chain and transformers. Utilizing electrolu-minescent optical attenuator, the circuit provides gain reduction with a very musical two- stage recovery. a . For those who don’t mind getting their hands dirty, Aion Electronics offers ready-to-solder PCBs for DIY guitar pedals, including many vintage circuits you may not have seen elsewhere. Despite the tubes, you have the advantage of keeping some degree of transparency, thanks to the optical circuit. Acme Audio Mfg. Like any optical compressor, it tends to deliver a degree of sneaky flattery, and when pushed harder its contribution as an outright effect becomes rather more apparent, but it is capable of behaving very politely too. I understand the tweak with optical vs. It is this detector circuit that is unique. But this compressor is also great on its own, providing natural and transparent dynamic control at lower settings. A three-fold device, the Bloom manipulates the dynamics of the instrument by way of precisely tuned compression, equalization, boost and sustain circuits which can be activated separately or in tandem with each other. A built-in optical Compressor with level control and bypass allows players to add the right amount of compression to the mix, while the Crunch feature adds a vintage tube effect that distorts only the high frequencies, preserving the all-important fat low end. Below are some of the basic elements of compression. No plug-in or other compressor type quite compares to the warm, forgiving, fluid qualities of the classic '2A optical compressor. Description Optical compressor. Used briefly in my home studio. The non-contact or contact-less optical tachometers usually use laser or Infrared beam to monitor the rotation of any body. Perfect your tone with the Opto Comp Optical Compressor pedal. This is a very easy to use and great sounding tool. Free Shipping & 2 Year Warranty. This makes sure you have absolutely no tone loss or signal reduction through Keeley Compressor even in the off mode. Dial in a fast, subtle style to control peaks or crank up the compression to add a unique character. There are mainly two types of compressor pedals. This particular listing is for the kit to come with a JP1590B enclosure, the newly laid out PCB now hangs from both pots inside the case. The Bloom from Jackson Audio is a comprehensive optical compressor that is designed to give guitarists maximum dynamic tonal control in ways never before possible. Layouts tonepad_dod280comp. LDC2 is an analog modelled optical compressor and expander with exchangeable optical circuits, solid-state preamplifier and output stage, giving you a unique compression character. 1% Metal film resistors, polyester metal film caps, a double sided PCB, and Neutrik jacks make this kit a bargain when compared to other Ross clones. From dreaming up our ideal compressor features, designing the circuits to implement them, sourcing parts for production and going back to square one on more than one occasion, we have worked very hard to provide a compressor that offers a ton of control without being difficult to dial in. Opto-Compressor 101 An optical compressor, often called opto-compressor, is a dynamic range attenuator. I use the Waves H-Comp the same way. The Tube Channel follows the strong ART tradition of exceptional quality tube-based products. 5mm to 3. Nice compressor. The idea is really a mix of two previous effects. 1 classic stereo optical compressor Drive Side Chain circuit which is unique to Buzz Audio and is used in all our optical compressors. This takes the non-inverting input of the Flatline and uses the simpler LED driver of the "Really Simple". It provides gentle limiting to fairly heavy  The floorQ is basically a Joemeek Optical Compressor in a pedal. The SUSTAIN control on this pedal varies the compression threshold to provide everything from subtle peak limiting to infinite clean sustain, all with incredible low-end response. After all, tubes and compressors on their own are each advertised as making everything sound fat and warm, so the two of them together must be amazing; and The Beatles and most other famous bands of that era were recorded with tube compression, so let's go buy a tube The Bumblebee starts with an optical compressor circuit that adds sustain - which enables a smoother, longer swell. The Brainworx bx_opto compressor combines some of the best colors, character and features from what Brainworx has learned modeling the optical circuits of some of the world’s best-loved compressors, like the Shadow Hills Mastering Compressor, the elysia alpha compressor, or the Millennia TCL-2. All four dynamic processors; the compressor, gate, expander and de-esser, Origin Effects Cali76 Compact Deluxe Compressor. About tube (valve) compressors: For people seeking fat, warm, "vintage" tones, the idea of a tube compressor is very compelling. An electro optical attenuator basically consists of a light source whose intensity is proportional to the level of the input signal, and a photoconductive cell whose resistance decreases as the light intensity presented to it increases. attached to a printed circuit board. This is a simple, but effective optical compressor. The response of this setup is smooth and transparent. low-distortion optical technology design, allowing transparent removal of excessive sibilance from a vocal performance. ADL Opus-3 Solid State Opto Compressor - Quick n' Dirty The Opus-3 is an all discrete solid-state design commonly referred to as a fixed gain circuit. This is for the guitarist who wants that "can't tell when it's on but miss it when it's gone" style compression. So you can have a fast acting optical compressor if you want. From the manufacturer: Product Overview The Ampeg Opto Comp analog optical compressor pedal utilizes an optical circuit to deliver smooth, vintage style compression to add headroom and sustain to your guitar or bass. Status VERIFIED. pdf 89. In an optical compressor, the detection circuit is unique; the audio signal is turned into light, which triggers an electro-optical sensor that governs the amount of gain reduction. Actually the same circuit is in our small threeQ box but it still ain't a pedal, so we decided to  However, what if an optical tube compressor could break through the historical model, The first compressor is an optical circuit that is incredibly smooth. Depending which compressor you're using, and whether it’s a hardware unit or a plug-in, there are some common parameters and controls that you will be using to dictate the behavior of the compression effect. LA-610 Operating Instructions The LA-610 is a vacuum-tube microphone/instrument/line preamplifier with basic EQ and an optical program dependent compressor. Lawrence II, founder of the Teletronix Engineering Company in Pasadena, California in the early 1960s. What are the differences between various types of compressor? Compressors are often described with category names like VCA, optical, FET, feed-forward, OTA, and so forth. Signal Limiters Any circuit that performs as a limiter or compressor must have low gain Following is a brief explanation of three circuit types – Opto, VCA and FET. A diode bridge is responsible for gain reduction and it's unique sound. The buzz is that the new Opto Comp Analog Optical Compressor from Ampeg utilises an optical circuit to deliver smooth, vintage-style compression. The 33609 is based on the diode bridge circuit design op amp Compressor Circuit using IC1 4558 PART Resistor R1 82k R2 4m7 R3 470k R4 2k4 R5 470k R6 390k R7 470k R8 6k8 R9 220k R10 100k R11 1k5 R12 10k Capasitor: C1 47n C2 47n C3 2n2 C4 4u7 C5 4u7 C6 4u7 C7 4u7 C8 2u2 C9 4u7 C10 47p C11 680p C12 10n Potensio: LEVEL 10k GAIN 10k BIAS 10k BRIGHT 10k Dioda: D1 1N4148 IC1 4558 J1 Jumper J2 Jumper J3 Jumper Fet: Q1 2N5457 Q2 2N5457 No plug-in or other compressor type quite compares to the warm, forgiving, fluid qualities of this classic optical tube compressor. -Warm Audio WA- 2A WA2A Tube Opto Compressor LIMITER - B-STK - PERFECT CIRCUIT. Built with high grade components and internally powered by 18v, The Warden has loads of gain and sustain on tap. Here's the description from the Demeter website: "The sound of classic studio optical compression of the 60's and 70's at your feet! Brainworx bx_opto Pedal by Plugin Alliance (@KVRAudio Product Listing): The bx_opto Pedal is a slimmed-down version of the bx_opto. 00 Simple Optical Compressor for bass guitar - construction An extremely simple yet capable compressor circuit is published by Elliott Sound Products, here: What makes Brighton Opto Tube Compressor tick? It is based both on a classic Vactrol VTL5 optical photocell detector and a custom-built one, prototyped on a breadboard with a new-concept, custom-circuit tube preamp designed by V. In fact, it’s the same circuit found in the award-winning BBE BMAX and BMAX-T bass preamps. Instead of the usual FET circuit used in many compressor pedals, Orange went with an optical based circuit for the Kongpressor and packed it with expanded control options. Step1: Understand that the LED, and both potentiometers will be mounted and soldered directly to the underside of the PCB. output on X/Y plot. With an audio input variation of 50dB, the output signal get is +-3dB. Both the limiter and compressor control a single optical gain cell in the audio path for parallel processing of the audio signal dynamics. The FRM stabilization ensures the excellent performance regardless of any externally applied perturbations. Shop Warm Audio WA-2A Optical All-Tube Audio Compressor Limiter from AMS with 0% Interest Payment Plans and Free Shipping. 4. Think of optical (or OPTO for short) as average compression rather than peak. The blend control allows for longer, sustained notes that aren’t squashed to oblivion. Some circuits would be illegal to operate in most countries and others are dangerous to construct and should not be attempted by the inexperienced. The "Really simple compressor" (which was posted to the "other forum") and the Flatline. More distortion than VCAs or FETs but not excessive. A high fidelity audio amplifier of the push-pull complementary symmetry type, featuring a feedback circuit with a bias sensing element connected to the output terminals of the output transistors. 1 lead to the development of our differential drive side chain circuit which is unique to Buzz Audio and is used in all our optical compressors. The important thing to think about is what are the non ideal effects, What is an optical compressor? These use an optical isolator circuit made up of a light bulb or LED and a photocell. The light source glows brighter or dimmer depending on the input level. E. While the preamp is always active, the compressor may be bypassed. Compressors are often described with category names like VCA, optical, FET, feed-forward, OTA, and so forth. At lower settings the “Comp” knob adds a subtle volume-leveling effect that adds a touch of evenness to the guitar’s signal, bringing up the level of low-volume playing and Adding MORE knobs does NOT make a compressor pedal a better stage compressor! So far as I'm concerned this is the one and I don't hesitate recommending it for what it does. C mentioned earlier in this thread, the FEA Opti-FET seems categorizable as an optical compressor; "The new audio path has been redesigned with the FEA 3S output amplifier circuit for warm tone and excellent noise rejection that features a class A FET output driver and a passive optical gain reduction element. The fact that it offers 40 dB of gain from input to output allows it to also be used as a preamp and compressor. Our unique drive threshold technology allows for touch-sensitive effects, responding to the intensity of your picking and adding grit as you play harder. On the whole, there are three types of compressor design – optical, FET and VCA – all mirrored in the circuit types offered by Logic’s Compressor plug-in. The optical gain reduction element is placed after the input transformer and then followed by an all tube-based output amplifier with a +10 dB gain. 1 March 30, 2017 13:33 So I chose to start with the LA-4 circuit, and then tweak from there. Get the best deal for Guitar Compressor & Sustainer Pedals from the largest online selection at eBay. DOD 280 Compressor-- INTERMEDIATE. Simple Optical Speed Trap T. Bypass is . They do pretts much what their labels say: EarthQuaker Devices The Warden V2 Optical Compressor Guitar Compressor Pedal with Tone, Level, Sustain, Ratio, Attack and Release Controls and True Bypass with AC Power Adapter and Pedal Patch Cables Here's an idea I came up with for a simple optical compressor. The compressor is characterized by its very musical compression circuit featuring a slow attack and a two-­‐stage release. delve into all of them in detail. DOD 280 Compressor US$ 8. Whether you’re just looking to dial in a smoother sound or keep the front end of your amp from clipping, an optical compressor is just the thing. Diy Audio Compressor Circuit >>>CLICK HERE<<< Subject description: Adding a compressor/limiter circuit to a vocoder's Brainworx bx_opto by Plugin Alliance (@KVRAudio Product Listing): Overview The Brainworx bx_opto compressor combines some of the best colors, character and features from what Brainworx has learned modeling the optical circuits of some of the world's best-loved compressors. The detector circuits of optical compressors  17 Aug 2017 In reality, a well-designed tube circuit amplifies sound cleanly when you set The compressor's electro-optical circuit takes care of the details  8 Aug 2016 From Athens comes possibly the 'Golden Ratio' Phi compressor, combining both FET and Optical compression in one very high voltage  The Ampeg Opto Comp Analog Optical Compressor pedal utilizes an optical circuit to deliver smooth, vintage style compression to add headroom and sustain to  7 Feb 2019 LDC2 is an analog modeled simulation of optical compressor and expander with multiple optical circuits. The second compressor in the circuit is the Discrete Section, which is powered by our discrete voltage- controlled amplifier in a feed-forward mode. Optical Cables (31), 3. Major points to note about the Figure 2 optocoupler are that its output current is controlled by its input current, that a control circuit connected to its input can be electrically fully isolated from the output circuit, and that — since the input controls the output via a purely optical link — potential differences of hundreds of volts The Really Cheap Compressor is a minimum parts design that was meant to be a replacement for the simple valve amplifier modification outlined above. 11 Feb 2014 Compressors aren't always the sexiest, must-have pedal to show off to . Description. Dial in a fast, subtle style to control peaks or crank up the compression to add a unique character to your sound. You’ll know that the compressor is working, as the light source will shine brighter the higher the level of signal you give it. LED on indicates that the effect is engaged. COMP knob to zero to take the compressor completely out of circuit. Smooth out sharp picking, keep your sustained notes from fading out, and limit your gain to prevent distortion. EarthQuaker Devices The Warden V2 Optical Compressor. There’s none finer than what you’ll find in the studio-grade, solid-state OptiComp compressor pedal. Also I designed the circuit by starting with some basic electronic engineering rules of thumb, like putting the OTA in a feedback loop. Products 1 - 24 of 87 I have several compressors, from optical to VCA driven ones like this, this A VCA compressor has a circuit that exercises precision control  Buzz Audio SOC-1. Browse through a total of 6 Audio Compressors Circuits. A tube based opto-compressor circuit follows the tube preamp. $329. be hard-bypassed, allowing you to remove either or both from the circuit. The compressor circuit is based on an optical attenuator - the purest, high fidelity gain control mechanism available. This is the nature of optical compressors. For what it's worth, Vactrol is just a fancy name (and genericized trademark) for a resistive optical element which can be used as the sensor for an audio compressor. VCA compressor utilize a voltage controlled amplifier in their compressor circuit. The Compressor 280 employs an electro-optical circuit that varies the amount of the pedal’s dynamic compression using a light-dependent resistor and internal LED. I am working on a compressor plugin for linux DAW and I would like to make an "optical" mode. It provides gentle to fairly heavy compression, while remaining neutral and transparent. This circuit uses a light source and a photocell (phototransistor) or LDR (light dependent resistor). One device that uses this circuit is the Art Pro VLA II compressor reviewed here. The XLA-500 is a tube optical audio limiter designed to produce a full range of non-linear, dynamic audio effects. O. is proud to introduce the OPTICOM XLA-500. A few years back, Apple, with little fanfare, slipped in a Circuit Type pop-up menu. The Fermata is an Optical Compressor, using a light source and a photosensitive cell to generate the effect. It's a mono unit, takes up two spaces in the rack, and has a fully discrete transistor circuit. This is the first FEA compressor/limiter that utilizes adaptive release circuitry. K. The unique differential side chain circuit of the SOC-M splits the audio into positive and negative waveform and processes it separately (attack and release parameters) with the resulting balanced signal controlling the Buzz Audio BE45 electro-optical attenuator. equipment into an outlet on a circuit dif ferent from that to which the receiver is connected (4) Consult your dealer or OPTICAL COMPRESSOR 3 2 1 E 3-CHANNEL In stock and ready-to-ship: Quality optical tables, used scientific equipment, test equipment, lab equipment, vacuum equipment, microscopes, optical equipment, and much more. Optical Compressor & Clean Boost ® OUT 9VDC IN Optical compression provides a more transparent, studio like sound. At the heart of the unit is the GAP T4 electro-optical attenuator, which makes use of two matched US-made Silonex NSL-5910 photocells. The heart of the Opus-3 is ADL's custom hand matched optical attenuator - the same optical attenuator found in the world renowned ADL 1000 mono and ADL 1500 stereo limiters. It is controlled by the sidechain amplifier, which also contain the two time control circuits – one for fixed and one for variable Attack/Release. It's probably the best optical compressor design out there. It's an optical compressor that's very similar to the Mad Professor Forrest Green Compressor. Norcold Power Boards for the N811, N821, N841, NX841, and NXA841. The LA-2A uses a T4 optical attenuator—this is made up of an electro-luminescent panel (an internal light, basically), coupled with a photoresistor. Optical obstacle switch - del50006 Now for the LM567 part, The clock at pin 5 flashes the IR Transmitter LED LD1 at a frequency set by C7-R5. • When the oil level drops below the level of the sensor, the sensor sends an electrical signal to the compressor control circuit, shutting down the compressor. In fact, it's the same circuit found in the award-winning BBE BMAX and BMAX-T bass preamps. 12 Jul 2016 After meticulously modeling the light-dependent circuits of several optical compressors, the bx_opto has amalgamated into a beastly little  25 Jun 2015 Our friends over at Brainworx and Plugin Alliance have just released two new compressor plugins, both based on one cool optical circuit: The  carl martin guitar effects Classic Optical Compressor, guitar amplifiers, bass guitar which controls the 'pre-glow' of the optical circuit (the more you turn this up,  the lazy comp is an optical compressor, fully adjusted in house. Thomas' Reverse-Engineered Joe Meek Compressor. Already lost? Wondering what the hell an electro optical attenuator & photo conductive cell is? The Ampeg Opto Comp Optical Compressor pedal utilizes an optical circuit to deliver smooth, vintage-style compression to add headroom and sustain to your guitar or bass. It has a tremendous sense of musicality to it. Anything from singing, sustaining solos to An optical compressor that has four knobs, one meter, one switch, and a single button shouldn't take too many words to review TG Opto is the latest offering from Chandler Limited in the 500-series format. I'll say it very plainly: You cannot achieve a recording or a mix that matches what you hear on professional releases without a compressor. Teletronix was sold to Babcock Electronics of Costa Mesa, California in 1965. Dynamic range compression (DRC) or simply compression is an audio signal processing operation that reduces the volume of loud sounds or amplifies quiet sounds thus reducing or compressing an audio signal's dynamic range. By now many audio DIYers would be familiar with "What Compressor?", a project that apparently had its origins in one man's dissatisfaction with Alesis' 3630 compressor and his fascination with a friend's Joe Meek device. This one's not for the feint of heart, and will take up most of a 1590BB enclosure. Opto (Optical) – named accordingly. For decades, the renowned ‘2A style circuit has become the go-to device for seamlessly handling vocals, bass, and a wide variety of other instruments and program material in an effortlessly smooth way. Taking inspiration from the acclaimed XLA-3, Acme Audio has painstakingly squeezed the XLA-3’s topology into a convenient two space 500 series module. This compressor and limiter configuration allows for multi-slope compression that is found in some high-end rack units. The vintage-inspired optical circuit adds extra depth your guitar or bass tone, making it seem ‘larger than life’. This is unacceptable in a high fidelity audio circuit and other critical applications. The Tube MP/C maintains exceptional signal integrity and extremely low noise. The high signal has its own compressor and the low signal has its own compressor. A perfect addition to any Ampeg rig, the Opto Comp adds headroom and sustain to your tone. Electronic Circuit Schematics. For decades, the renowned ‘2A type circuit has become the go-to device for seamlessly handling vocals, bass, and a wide variety of other instruments and program material in an effortlessly smooth way. The GF-Series optical gas imaging cameras can detect natural gas, SF 6, and CO 2 leaks quickly, accurately, and safely without the need to shut down systems, or the need for contact with the components. Often, whether in pedal or studio style rack format, an Optical Compressor is useful as it allows for greater transparency and transient clarity. This is the first  1 May 2014 The opto cell is the actual component responsible for providing the gain In many compressors, this is the extent of the circuitry for these  Warm Audio WA-2A Tube Optical Compressor and Limiter. Compared to, say, a digital circuit, which can represent those changes with numeric precision, an optical circuit is full of non-linear ambiguities and latencies that translate to a lovely, vocal musicality. Perfect your Golden Age COMP-3A Discrete Optical Compressor Limiter, New Two knobs and a T4 electro-optical attenuator -- that's all you need. Adjustable frequency crossover point with the range tailored for bass guitar. Gotten several requests for this one and for good reason. Faithfully replicating the vintage LA3A design, The Serpent Chimera brings the classic Opto sound to 500 series format. The Ampeg Opto Comp Optical Compressor pedal utilizes an optical circuit to deliver smooth, vintage-style compression to add headroom and sustain to your guitar or bass. Update Audio Compressor AGC Schematic 2  Optical compression provides a more transparent, studio like sound. to the tone as the optical circuit This is a simple, but effective optical compressor. This is a very expensive switch but is well worth the tonal difference. As an electro-optical compressor, the COMP-3A’s circuit makes use of an electro-luminescent panel along with photoelectric cells to control gain. "We realized that a lot of guitarists and bass players were buying our studio gear - such as the twinQ - just to put their guitars through" says PMI President Alan Hyatt. At lower settings the “Comp” knob adds a subtle volume-leveling effect that adds a touch of evenness to the guitar’s signal, bringing up the level of low-volume playing and Once the cross-over splits your signal into low and high, each is sent to its own separate optical compressor circuit. Some builders may not be interested in the current offerings or don't have time to build, yet wish to support the website and forum. The 10 Best Compressor Pedals the Diamond Compressor uses an optical isolator for its compression, which is the same type of circuit found in high-end studio The Logic Compressor’s circuit types. To put it in a very generic yet practical sense (and break these rules as you see fit once you're more familiar) Always on compressor to help limit the level variance while playing (think clean arpeggiation vs banging out open chords, or getting those little clean fills between chords to actually be audible in a live setting), go for optical Opto Comp Analog Optical Compressor Introduction The Ampeg Opto Comp Analog Optical Compressor pedal utilizes an optical circuit to deliver smooth, vintage style compression to add headroom and sustain to your guitar or bass. Optical compressor: A hand selected  In vintage style, the SOC-1. HXC-1 Hx Series Tube Optical Compressor User’s Guide The Hx Series from Demeter Amplification is a revolutionary approach in tube design utilizing innova-tive tube circuitry for the amplification functions and the latest in solid state for the driver functions. A faithful reproduction (with smart tweaks) of a LEGENDARY COMPRESSOR. None of the snappy rubber band attack that is associated with other types of compressors. Tube Opto Compressor Schematic Read/Download It features exactly the same tube circuit as our famous CL 1B Opto Compressor, but the action is different due to a different, carefully selected optical element. The photocell reads the varying brightness of the light source and changes gain accordingly. The preamplifier’s active balanced solid-state input provides extremely low noise and excellent CMRR. The main function of an opto-isolator is to block such high voltages and voltage transients, so that a surge in one part of the system will not disrupt or destroy the other parts. A common problem with older opto compressor designs (and many modern ones too) is the inherent slow attack time of the LDR elements – not so desirable for mix buss applications. PCB sales go a long way toward keeping the lights on around here. Continuing with vibey slow-compression-style circuits, next we have the opto or optical compressor. When pushing the SUSTAIN higher, the circuit is designed to over compress. The What Compressor is a simple, stereo compressor circuit inspired by a Joe Meek optical compressor. The Opto Comp Analog Optical Compressor pedal utilizes an optical circuit to deliver smooth, vintage style compression that is popular with bass players in the studio and on the stage. With well over 52,000 compressors built in our shop we have an expert understanding of compression, limiting, and sustain. The fading time depends on C4 and R5. • DC isolators • Feedback elements in automatic gain control circuits • Audio limiting and compression • Noiseless switching • Logic interfacing • Remote gain control for amplifiers Here's another great circuit by Bjorn (who also designs all the Mad Professor stuff). But I'm still interested in the concept of a simple tube compressor that only uses a couple of 12ax7's with an optical isolator are there any similar "non-contentious" schematics available anywhere ? I already have a boss cs2, its ok considering its price but it doesn't sound right. Tachometers can be contact based or non-contact ones. Resistors: The writing on the opto-coupler should be facing up . Dual optical compressors for separate Low frequency (LO) and High frequency (HI) dynamics control. Build Your Own Clone Optical Compressor Kit Instructions Warranty: BYOC, LLC guarantees that your kit will be complete and that all parts and components will arrive as described, functioning and free of defect. The PC-2A is a true vintage studio compressor in a stompbox—there are no VCA chips, opamps or budget components in the signal path which is 100% analogue and built on a hand selected photo-cell, polyester coupling capacitors, precision resistors (with silver/palladium contacts) and SylvaniaN. A brand new trace of a rare & elusive optical compressor. Things like signal level and its scaling to make the circuits work correctly are not included in this doc. There are 5 compressor attack settings and 6 release settings that cover a wide The Logic Pro Compressor is a versatile and amazing sounding plug-in. 1 Stereo Optical Compressor from Buzz Audio, classic side chain circuit which is unique to Buzz Audio and is used in all our optical  The OCL-2 is a two channel electro-optical compressor/limiter designed for the sound stage and clarity that can only be achieved with modern tube circuitry. 25 May 2018 The Ampeg Opto Comp Analog Optical Compressor pedal utilizes an optical circuit to deliver smooth, vintage style compression to add  27 Jan 2018 "The dual circuit design opens up a new world of chorus sounds that, until now, The Opto Comp Analog Optical Compressor pedal utilizes an  Black Lion Audio, having hit the mark with the widely adored Seventeen compressor, has struck again, combining the Seventeen's F. These names are for different circuit designs,  Opto Comp 3qtrleft The Ampeg Opto Comp Analog Optical Compressor pedal utilizes an optical circuit to deliver smooth, vintage style compression to add  A look at the three main types of compressor most commonly used in audio mastering situations - Opto, VCA and FET. Optical compression has a special sonic character that audiophiles can truly appreciate. The Diamond Compressor & Comp Jr are stellar examples of optical compression done right and are excellent candidates for an “always-on” compressor. circuit with mechanical relay switching. A Tweeker's Version of David B. Realacci of Sound & Light (in Formia, Italy). optical compression circuit reacts very smoothly, so there's no “pumping” sound found commonly in highly compressive circuits. The Warm Audio WA76 1176 Limiting Amplifier is a recreation of the classic 1176, with painstaking effort made to adhere to the original design schematics—right down to the CineMag transformers. The Diamond Compressor (in standard or Comp Jr form) is your all-in-one stage and studio tool for adding a professional touch to your guitar signal. 7 KB-- Dos Ochenta, Rev. Join Dave Darlington for an in-depth discussion in this video Using CLA Series, PuigChild, API, and SSL hardware compressor emulations, part of Waves Plug-ins: Mixing Techniques The Ampeg Opto Comp Analog Optical Compressor pedal utilizes an optical circuit to deliver smooth,vintage style compression to add headroom and sustain to your guitar or bass. Hareendran - 07/25/19. As you can see, the PCB is small and well laid out. The Golden Age COMP-3A compressor/limiter is modeled after the classic LA-2A and LA-3A. The resistance of this light sensitive element informs the compression circuit how much and how quickly to attenuate the audio signal. The project is a unique design that, according to Analag, originated from experimenting with a LA2A clone. A circuit can also incorporate high voltages by design, in which case it needs safe, reliable means of interfacing its high-voltage components with low-voltage ones. This compact pedal was the brainchild of over two years of research, experimentation and design and is Effectrode’s best selling effects The circuit is true to the original Ross gray compressor and comes with the CA3080E chip and 2N5088 transistors (these are the semi-conductors currently used in the Keeley Compressor). Like an integrator, it will not operate relay very fast. So attack speed and stuff seems to be almost non existent. This compressor is not designed for “brick wall” limiting. An EQ is The TUBE-TECH CL 2A is an all-tube optical compressor with two independent, linkable channels. Comp sets the threshold of the optical compressor circuit. This makes it applicable to almost anything, from mastering tasks to taming down exaggerated transients. Most users would consider these anomalies "the happy accident," for it is nearly impossible to make a classic optical compressor / limiter sound bad. If your kit has PC mounted pots follow these steps for mounting the circuit board. But first, some Optical Guitar Pickup Schematic >>>CLICK HERE<<< Effects can be housed in effects pedals, guitar amplifiers, guitar amplifier simulation Another kind of compressor is the optical compressor which uses a light end of a spring and a pickup at the other, similar to those used in plate reverbs. Due to its slow nature, it works far better than the previous two as a bus compressor to average out dynamics over time. ANALOG COMPRESSORS AND SOME OF THE BITS THAT MAKE THEM WHAT THEY ARE by Dave Hill for Audio Days Paris March 2012 This is not a complete list and are very simplified. VCA, FET, Optical, and Variable-Mu are the four common types of audio compressor. The actual stage gains and tube operating parameters are not varied, permitting the tubes to operate at optimum conditions regardless of the amount of gain reduction. Aion Electronics. Logic's Compressor is great in the sense where it's emulations are only based on a certain compressor, but they are much more flexible. No plug-in or other compressor type quite compares to the warm, forgiving, fluid qualities of this classic '2A-style optical compressor. With vari-mu compressors the VU would be in the cathode of the first stage, but I'm trying to logically think of the easiest way to do this in an optical compressor As it stands the comp is designed to take a 500mV signal, and anything above that the circuit will compress (with the threshold fixed). KEY FEATURES. It includes a couple of unique features: a built in low-cut filter in the sidechain, and a resistor that blends in some of the dry, uncompressed signal. " first compressor in the circuit is the Optical Section. com. Order Printed Circuit Boards. I used the 2-channel OCL-2 as a vocal compressor on several gigs that I mixed, including John Prine and several dozen bands at the Portland Blues Festival the following week. Like the DC-Drive, the Classic Optical Compressor is impressively musical. The pedal needed to have a triple pole double throw switch. Thermal Care now offers the new TCF Central Chiller which combines the efficiencies of both a hybrid film evaporator and a Turbocor variable speed centrifugal compressor to deliver optimum full and part load efficiencies. on the front, this analog compressor of incomparable quality hides a specific circuit providing a  Connect the equipment into an outlet on a circuit different from that to which the Congratulations on your purchase of the White Finger optical compressor! The RC 500's FET (Field-Effect Transistor) compressor includes fully variable attack better repeatability than the optical compressors typically found in channel strips. These are all optional settings in Logic’s own compressor plugin which is to be used for demonstration purposes. Audio Compressors Circuits (6). A tachometer is a device used to measure the RPM or Revolutions Per Minute of any rotating body. The D-AOC is a DIY Dual Analag Optical Compressor (with tubes), named “Analag” for the GroupDIY forum member who designed it. EarthQuaker Devices The Warden V2 Optical Compressor Hey boss, thanks for taking a visit from The Warden™! The Warden is an optical compressor with a feature set usually reserved for View full product details » The design of the SOC-1. Note that all these links are external and we cannot provide support on the circuits or offer any guarantees to their accuracy. for conditioning Keeley Compressor Plus ON SALE NOW! Over 2,000 sold in 6 weeks! Keeley Compressor Plus. What makes optical leveling so musical? Light dependent resistors have a memory, so to speak. OUTPUT. Its high performance is powered by a new optocoupler designed and manufactured by Frantone in the USA, which controls an active attenuator circuit for ultra linear response and maximum sensitivity. Modern solid-state stereo limiter/compressor with pleasing distortion. The Fermata optical compressor is a product that has spent a very long time in development at XTS. Set it fully counterclockwise for a slow ramp- very nice for infinite sustain- just as the note begins to die the Compressor kicks in for a seamless singing lead. It's got a great level of transparent compression available, is built like and tank and uses decent quality components. In the first place, a light source in a photosensitive cell controls the gain reduction in a optical compressor. Horizon’s LED-based optical circuit leverages these quirks in many cool, often intoxicating, ways. The Demeter Compulator has been a popular compressor for a while now. This allows for full control of attack and release parameters and smooth response to the compression itself. This device is capable of transforming energy from one form to another. BOOST LEVEL. The OTC-201 was made in very small numbers between 2013 and 2016 and remain exceedingly rare today. The frequencies above 5KHz are routed around the compressor circuits and are mixed back into the output amplifiers at unity gain to preserve clarity. Analog Optical Isolators are used in many different types of circuits and applications. No plug-in or other compressor type quite compares to the warm, forgiving, fluid qualities of this classic optical tube compressor. Learn The Audio Mastering Blueprint right  The PC-2A is a stompbox compressor based on the vacuum tube circuitry found in UA s famed tube-amplified T4 electro-optical compressor is unmatched in  Ableton compressor tip: Try out Opto mode. The TUBE-TECH CL2A Dual Compressor features two independent optical compressors. The control characteristics of optical compressors is non-linear in that changing the control current for the LED in the optical circuit does not have a linear relationship to the amount of attenuation. The PEQ-1 is a passive, tube EQ based on the famous Pultec EP1 circuit. At its heart the Diamond Compressor/Comp Jr is a low-noise optical compressor that smooths out your signal while preserving signal integrity thanks to premium audio grade components. CL2A Dual Optical Compressor . Their names describe the gain reduction circuit for that particular compressor and how they react to the signal. Browse your favorite brands affordable prices free shipping on many items. 3 jumpers, but the pots are board mounted. Using the Fermata, firstly, is incredibly easy and intuitive to adjust and set. Opto-isolated bias circuit for operating push-pull amplifiers in class A and class AB modes . circuitry with a worthy  Effects Pedal Compressor with classic opto-electronic circuit, High-grade components, True Bypass, 6 Controls: tone, level, sustain, ratio, attack and release,  Products 1 - 24 of 87 I have several compressors, from optical to VCA driven ones like this, this A VCA compressor has a circuit that exercises precision control  2 Jul 2018 As you've no doubt guessed based on its name, the Ampeg Opto Comp is an optical compressor. Available as VST2, VST3, AU and  The Engineer's Thumb: LM13700 Compressor / Sustainer to the BBE Bench Press (£144) (five of the others are optical compressors, one is digital, Now when the circuit gain is highest the OTA gain must be lowest (restricting the amount of  The compressor circuit is based on an optical attenuator - the purest, high fidelity gain control mechanism available. The IGS ONE LA is an input and output transformer balanced, full tube device. 5mm Cables (21) Taking on a classic - the Urei/Teletronix/UA LA-2A optical compressor circuit All right, here's a first project for the blog. Designing a 500-Series Optical Compressor Pt. It's not an opto, but an OTA that is used in a feedback loop - different circuit and response than any OTA that I've experienced, being the quietest guitar compressor design on the face of the earth for starters. It's a type of audio compressor that uses an electro optical attenuator to control the dynamics of the processed signal. The unit features a gain-reduction element, positioned immediately after the input transformer. The Ampeg Opto Comp Analog Optical Compressor pedal utilizes an optical circuit to deliver smooth, vintage style compression to add headroom and sustain to your guitar or bass. FLIR optical gas imaging (OGI) cameras can help you detect methane, sulfur hexafluoride, and hundreds of other industrial gases quickly, accurately, and safely - without shutting down systems. Optical compressors, based around light dependent resistors, are smoother and more subtle, much like the studio outboard units. The on/off indicator LED in the original is a bi-color LED that pulsates with the signal. treble mid flat BOOST. The T4 is a cell that has nearly infinite resistance in the dark, but light hitting the surface of it causes a drop in resistance, allowing it to be the control in the circuit for gain reduction. After meticulously modeling the light-dependent circuits of several optical compressors, the bx_opto has amalgamated into a beastly little dynamics processor, teeming with character and spitting out sounds like no analog optical compressor can do. A compressor pedal can perform a variety of jobs depending on where you place it in your guitar signal chain and what style of compressor you choose. DIY: How to Repair a Wet Pedal · PRS. It simulates the reaction of an optical compressor circuit. Get the lowest price on the IGS ONE LA Optical Compressor. Like the Menatone J. Hey boss, thanks for taking a visit from The Warden™! The Warden is an optical compressor with a feature set usually reserved for studio grade units. Perhaps the most famous example of an optical compressor is the Teletronix developed LA-2A, a tube-based design that uses the military designed T4 photoresistor. i remembered  The IGS ONE LA is an optical compressor, inspired by the legendary solution dual-triodes are installed on the audio circuit, while the compression circuit is  18 Nov 2015 Perhaps the most famous example of an optical compressor is the it causes a drop in resistance, allowing it to be the control in the circuit for  Crazy Tube Circuits (Phi) Φ (Phi) features two studio grade compressors, optical and FET, in a single stompbox format. true bypass. This should be the first thing you consider when picking a comp so that you don’t end up with a compressor that gives the opposite of what you were looking to achieve. These names are for different circuit designs, for the part that actually follows and reacts to your signal level, and the way in which it reacts. $199. The reason was to "prevent the unit from In like-new condition. At lower settings the “Comp” knob adds a subtle volume-leveling effect that adds a touch of evenness to the guitar’s signal, bringing up the level of low-volume playing and The heart of the leveling amplifier is the electro-optical attenuator which is placed ahead of the first amplifier stage. Its a nice pedal and all and i would use it but i have always found the optical compressor no matter which one i try to be a bit slugish as in not very responsive. These compressors use a photocell as the compressor detector and a light bulb or LED to determine the gain reduction. DIY PCB projects for many vintage and classic circuits as well as modern variants . Free shipping on many IGS items! No plug-in or other compressor type quite compares to the warm, forgiving, fluid qualities of this classic '2A-style optical compressor. The guitar version is a favorite among guitarists and after playing thru it, I can easily see why. The Squeeze Box is an all-tube electro-optical compressor/limiter with RMS strip with 20dB of gain, suitable for dynamic mics on louder sources such as snare drums. COMP. PW: The API 525 FB compressor had a circuit called "release time over-ride" that allowed transients to recover quickly and overloads to recover slower. Yara² is a very versatile low noise optical compressor designed to meet the high standards of guitar and bass compression. The CP-1 is a sweet optical compressor designed specifically for live performance. 2. Optical Compressors get their name from the fact that they are built with an isolator circuit, photocell, and with either a small light bulb or LED. The Keeley Compressor is the most popular boutique compressor in the world. 0. ”Adding a compressor to your setup is one of the easiest ways to step up your tone and consistency,” says Ampeg Product Manager Ryan Cassady. Find all your IGS needs at FrontEndAudio. Today's post is from . A circuit for three-phase detection, a method for three-phase detection and a compressor are provided. With only three knobs and a couple of switches, this optical compressor is very simple to operate (but not simple to build!). I've built several of them (which reminds me, I need to make another one this week), and everyone who's used them, likes them. The hardware unit is an optical‑based compressor with valve electronics, so if you want to try to emulate it, the first thing to do is to select Opto from the Circuit Type menu. The Opto-C3 and Opto-L3 modules use an electro-optical attenuation circuit model for compression (Opto-C) or limiter (Opto-L) applications. The opto-isolator (for short) is placed in a feedback loop – it This mini audio compressor circuit use only one active component T1. The TUBE-TECH CL 1B Compressor is an optical, all tube based compressor. A unique speed up circuit within the DDSC effectively reduces the attack time to less than 1mS when the SOC is in FAST attack mode. Being passive in nature (and given the unique time-constants behavior of LDRs) the result is a remarkably useful compressor/leveler for broad tracking and mixing duties. An optical compressor performs gain reduction control via a light source into a photo sensitive cell… as the light source gets brighter, the photo sensitive cell sends a signal to reduce dynamic In an optical compressor, the resistors are light-dependent: the audio signal feeds a lighting element (such as an LED), which shines upon a light-sensitive resistor. The Ampeg Opto Comp Optical Compressor pedal utilizes an optical circuit to deliver smooth, vintage style compression to add headroom and sustain to your guitar or bass. It provides a great way to get that charismatic compression of the bx_opto with a simpler interface, lower price tag, and guitar pedal feel. The circuit for three-phase detection includes a first optical coupler and a second optical coupler. Common Compressor Controls & Parameters. MyAudioLabs offers a full kit with everything needed to The Compressor 280 employs an electro-optical circuit that varies the amount of the pedal’s dynamic compression using a light-dependent resistor and internal LED. I've recently built the Merlin compressor (Engineer's Thumb) and am quite impressed. ±15 kHz deviation compressor-expander system with pre-. Soldering, clipping, cutting, stripping, or using any of the components in any way voids this guarantee. 28 May 2018 The 220k resistor in feed back loop need some more thought to get right range of effect give me your critique let know if you see any la light  20 Jan 2015 Reader Bill W recently sent us a few interesting ancient DIY audio projects that we had not seen before. 00. The Tube Channel is a single-space, tube recording channel featuring individual circuits which include a tube mic preamp, an optical compressor, and a four-band, tube-based parametric EQ. Optical Class A Compression The Kongpressor’s analogue, Class A design makes for very natural sounding compression. The OPTO compressor revisited simple and works well March 2, 2013 August 6, 2013 raycharlesring Audio Electronics , Compressors I have been playing with all sorts compressor ideas and the circuit below is about the simplest thing I have come up with that works well. </p> <p>Dial in a fast,subtle style to control peaks or crank up the compres All your tracks can now have glorious, easy to use compression which regardless of how much you squeeze, will always end up with their sonic essence perfectly intact. The heart of the compressor circuit is an optical attenuator- the purest, high fidelity gain control mechanism available. The technology behind its behavior and the way it achieves gain reduction is so ingenious and at the same time quite simple: the core of the circuit is an electro-optical attenuator, whose light source intensity With the same hand wired transformers and feedback circuit as the classic Neve 2254, the SA-609 is the ideal compressor for the stereo bus on audio mixing and mastering duties, as well as broadcasting applications. The LA-2A Leveling Amplifier has only a single gain stage and is one of the simplest compressors to operate with two knobs: Gain and Peak Reduction. 28 Sep 2017 Let's delve into the circuitry and find out which one is right for which Audio Compressors: VCA, OPTO, FET, And Other Compression Circuit  29 Mar 2017 An optical compressor, often called opto-compressor, is a dynamic from his background with military optical sensors to design a circuit which  Schematic, Understanding the circuit and Parts Checklist for BYOC Optical Compressor Kit. BYPASS FOOTSWITCH: Engages and disengages effect. vca compressor is that at some level of dynamic it ceases to compress, so there is a "width" to the compression curve when plotted input vs. Photo-optical: Ultra-linear , low distortion photo- resistive attenuator sounding compressor pedal. It's not too heavy handed, and is, as Bjorn has said, "The compressor for people who hate compressors. The kit itself is very straight forwards. The LA-2A Leveling Amplifier is an audio compressor invented by James F. This circuit processes the negative and positive portions of the audio wavefrom separately (attack and release parameters) and along with the "soft knee" characteristic creates We report a polarization insensitive fiber-based NOLM scheme that incorporates non-PM fibers as the non-linear medium. Using an AOI, simple circuits can be made to perform this function without introducing distortion or generating any noise. This dual type compression will please fans of warm harmonics in quest of attack based on vintage sounds. As expected of an opto compressor, this pedal applies effects in a smoother fashion, which gives a more natural sounding result. " The best vocal compressor for voice, bass, drums, and any other audio signal is the topmost studio-quality one you can afford. The Diamond Compressor uses a simple and relatively non-intru-sive resistive divider gain reduction system that utilizes an analog optical isolator to map output signal level to a variable resistance. Compressors based around a transistor circuit, like the DynaComp, are often favoured by finger pickers, for their fast and aggressive compression. It'll be a bit more sluggish, and can be nice on basses or  2 Jul 2019 VCA Compressors | FET Compressors | Optical Compressors you can take the front plate and make your own adjustments to its circuit board. low and high shelving-type tone controls, or bypass the graphic EQ entirely. Accuchiller TCF Series Central Chiller Single Circuit Chiller 100 tons. CL 2A is a great compressor on all sources, and it is widely known as an excellent “problem solver” when delicate gain control is called for. The famed Teletronix LA2A is an optical compressor that many producers swear by for vocals and mix bus compression. 2005. Greg Wurth describes the basic makeup of an optical compressor as well as its common applications. This is the circuit with precision metal-film resistors for low-. 2 (March 2019) LDC2 provides smooth and warm dynamics processing for tracking, mixing, mastering and live performances. A pedal to warm up your sound, driven by two 12AX7 tubes in the pre-amp stage and an opto-compressor circuit. Pigtronix Philosopher Bass Compressor Micro brings the heralded Philosopher’s Tone compressor circuit to bassists in a micro-sized stompbox format. Based on my experiences I will always use an OPTICAL compressor for my rig and for as long as I can get an Aphex Punch Factory then that is the optical compressor I will use. Opto, meaning optical, describes the light sensitive circuits that control the compression amount in opto compressors. Designed to optimize absolute signal integrity and musical performance, the AD2044 combines advanced electronics with sonic excellence unequaled by lesser designs. Why A PWM Compressor By Dave Hill 201101001 There are many different ways to make a gain control circuit for an analog compressor You can use a; tube, FET transistor, diode bridge, VCA, optical (light dependent resistor) or PWM The Convex Parallel Compressor is a clone of the Dinosaural® OTC-201 Opticompressor, an all-original optical compressor designed by Dan Coggins, the chief engineer & circuit designer for Lovetone. (new old stock) 6111 subminiature tube operating at real amp plate voltages all on This is the basic functionality of optical dynamics processors. It’s 7 compressors in one and it covers just about every classic compressor you could possibly want to own. The circuit is configured to operate as a fiber compressor and produces narrow and pedestal-free optical pulses. The VLA 500 retains the Pro VLA's signature vactrol-based compression circuit, but removes the tubes and adds two tone-coloring distortion circuits. This is my latest compressor build, and it's now right up there with my current favorites of the bunch. Clicking on the little arrow at the bottom of the Compressor plug‑in window reveals several extra controls. The compression is controlled by two knobs. Even in a fridge stabilizer they put something like this else the compressor motor is damaged on frequent black-brown outs. It might be really lame, as I ain't schooled in circuit board layout. The audio signal goes thru C1, Mounting the Circuit Board PC Mounted Potentiometers: Some kits will come with PC mounted pots depending upon availability. BYPASS. Like most common compressors the incoming audio signal is split into two parts: the part that passes through the gain stage and is ultimately output, and the part that is used in a detector circuit to control that gain stage. Abstract. An optical compressor, for example, might give you smooth tones, while a tube compressor delivers a more robust attack. Tube-Tech CL 2A 2-channel Tube Optical Compressor 2-channel All-tube Optical Compressor with 5Hz-25kHz Frequency Response, Continuously Variable Attack and Release Time, Clickless Bypass Switch, and VU Meters $ The Carl Martin Classic Optical Compressor is designed specifically to give guitarists the type of optical compression used in studios and on bass-guitar tracks for years. Featuring an all discrete circuit design, Orange Drop and Elna capacitors, full steel enclosure & cover, class AB transistor output, true T4B optical cell, and transformer balanced input & output, the Chimera delivers the thick, rich, & smooth opto compression sound that you Why the world needs another optical compressor remained a mystery until I tried Pendulum Audio's OCL-2. T. I've been commissioned by the Richmond, VA-based branch of the Black Iris music collective to (re)create a studio compressor/limiter with circuitry substantially similar to that found in the venerable Teletronix LA-2A. The basic construction of an electro optical attenuator is fairly simple. Incidentally, if you're wondering why it's called the engineer's thumb, it is named after a Sherlock Holmes story in which the poor engineer is almost crushed to death in a giant press (press, compressor, geddit?). The IGS Audio ONE LA is an optical compressor, inspired by the legendary solution well known from the '60s. In the core of the mentioned compressor lies a transducer. The Weak Joe Optical Compressor. The Mastering Compressor OPTICAL SECTION The Optical Section is the first gain reduction circuit in the Mastering Compressor. The Cocaine features the same optical compressor circuit as its little two-knob brother, the much beloved COCA COMPRESSOR but offers a lot more controls and tone-shaping features. Turning the COMP knob to zero effectively takes the compressor out of circuit. Jan. This pedal actually has two completely independent optical compressors. The famed tube-amplified T4 electro-optical classic compressor/limiter. Warm Audio WA76. The Joemeek floorQ: The floorQ is basically a Joemeek Optical Compressor in a pedal. In addition to providing tone-laden compression, the bx_opto Pedal doubles as a gain pedal. Whether you're just looking to dial in a smoother sound or keep the front end of your amp from clipping, an optical compressor is just the thing. The Opto Comp is our painstaking, high quality take on a famous 60's Optical Tube Compressor known for it’s sonic elegance, extremely musical compression and buttery smooth, hefty “box-tone” just by running audio through it tubes and transformers. Here is a list of only a few examples of where AOIs have been used. VR-2 is your "Speed" control- This will decide how fast the Compressor ramps up. This added to the traditional bread-and-butter Compressor behavior (Platinum), by offering the ability to mimic the characteristic response of various classic hardware compressors. There's none finer than what you'll find in the studio-grade, solid-state OptiComp compressor pedal. One final thing to note: The compressor circuit becomes slightly more. The PC-2A is a stompbox compressor based on the vacuum tube circuitry found in the vintage LA-2A studio compressor – like the LA-2A, the PC-2A has an all-tube signal path and photo-optical attenuator. Optical Compressor. Unlike other compressor types, hardware optical compressors have fixed ratios, typically 3:1. The use of an electro-optical circuit causes the dynamic compression to ‘back off’ after a certain amount of dB reduction is achieved. The circuit uses phase cancellation to create a smoother and less intrusive de-esser than traditional compression-based designs. Title Description Create Date Created By Project; Modifying a TS9 to TS808: How to convert an original Ibanez TS9 to TS808 specs, including opamp replacement if necessary. The LA-2A is an optical compressor—as you know, compressors all employ detection and control circuits to determine when signals cross Threshold and apply the appropriate gain reduction. The main preamp circuit has two gain stages that utilize a dual-triode tube operating in a class A single-ended configuration. Optical Compressor Build Time Elapsed: 90 minutes Song: Toxic - 16 Bit Shout out to Zak of Audio Bakery. 17. There are two different style power boards for this model refrigerator and in order to determine which will fit your specific model, you will need to locate the refrigerator's serial number. The Avalon AD2044 Pure Class A opto-compressor is the most transparent, low noise optical-compressor available today. Unlike our previous circuit types, optical compression is smooth and colourful. They often react more slowly than other compressor types, but this can be desirable. The compression is smooth, organic, & musical, and the EQ control is particularly useful for shaping your top-end on higher compression settings. A. The key to understanding the rumors is matching the “circuit type” to the classic compressor Sound Skulptor LA502 - 500 series Optical Compressor The LA502 is a soft knee, electro-optical compressor based on the LA2A/LA3A design, which we have adapted to the '500' series format. Current version: v1. The audio signal goes thru C1, R1, D1, C2, R3. Teletronix LA-2A. Co. S. Brighton Opto Tube Comp is an official third-party plugin for N4 Player Optical Compressors. Origin Effects Cali76 Compact Deluxe Compressor The Cali76 Compact Deluxe is an 1176-style studio-grade FET compressor, featuring high-current, low-noise, discrete Class-A circuitry and a dedicated parallel compression control… all contained The WHITE HORSE is an optical compressor pedal and a whole lot more. Still a part of audio signal charge the D3/D4 detector and creates a control voltage for T1. optical compressor circuit

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