Three versions of the LA-2A were made until 1969. Well maintained from private professional studio/collector. Watch Seattle rapper Grieves deliver a fiery vocal performance, showcasing how to create the perfect hip-hop vocal chain using UAD plug-ins and Auto-Tune. The effect is illustrated in Figure The VU meter may also be switched to show the gain reduction or output level. Preferred Seller. Featured Listing. When you put bass and drums in them they get fatter and bigger. Compressors and Limiters. Pro Audio. As the input signal increases, the light panel gets brighter. In addition to adding support for VST compatible DAWs, the CA-2A T-Type Leveling Amplifier also includes side-chain capability allowing the compressor to react to program material from one track, and apply it to another. RARE Vintage Teletronix Limited Edition 1979-84 UREI LA-2A Compressor Limiter Reissue 1 #132 of 300. It puts the silky, smooth sound of this highly desirable unit … 2015. A uniquely accurate model of the legendary Teletronix™ LA-2A optical leveling amplifier. When Bill Putnam Jr. refounded Universal Audio in 1999, reissuing the LA-2A once produced by his father was at the forefront of this mind. I was very curious about the future of the LA-2A, so I asked Bill Putnam Jr. if the advent of plug-ins has adversely affected the sales of the Universal LA-2A, since now people can easily put a digital LA-2A on every single track and the emulations are quite similar to the originals. In 1962, Lawrence reconfigured the LA-2 into the first LA-2A, sporting a gray faceplate and a change to the messy layout of the unit’s interior wiring. As products like the LA-3A, LA-4, and LA-5 gained popularity, sales of the LA-2A slowed until it was discontinued in 1969. Reviews. Let’s look inside the T4 optical attenuator, which is the heart of the LA-2A. The LA-2A Leveling Amplifier is an audio compressor invented by James F. Lawrence II, founder of the Teletronix Engineering Company in Pasadena, California in the early 1960s. Klark Teknik pay homage to this a The Teletronix LA-2A: an original 1962 unit will set you back four grand. The photocell and the physics behind it are what immediately result in the two-stage release.”. Universal Audio’s Teletronix LA-2A Classic Leveling Amplifier reissue provides the performance characteristics of the iconic original. 37. The LA-2A Leveling Amplifier is an audio compressor invented by James F. Lawrence II, founder of the Teletronix Engineering Company in Pasadena, California in the early 1960s. That introduction lead CBS to buy a pair of LA-2s and shortly after, RCA purchased LA-2s for its New York and Nashville operations. “It’s inspiring to sing through psychologically. This prompted two limited edition reissues — one in the 1970s, and one in the 1980s — and then a full resurrection of the LA-2A in 1999 by Universal Audio. The average attack time is 10 milliseconds,[4] while the release time is about 60 ms for 50% release and 0.5 to 5 seconds for full release, depending on the previous program material.[5]. Replicating the crucial T4 optical attenuator for a faithful LA-2A reproduction involved a lengthy study of the original photocell formula — including working with both modern device physicists and the developers of the original 60s-era photocells. 3. 30+ Joined Reverb. If compression is heavy or the signal is above the threshold for a long duration, then the release will be slower. RealVerb Pro 9m 50s. [1] Teletronix was sold to Babcock Electronics of Costa Mesa, California in 1965. Teletronix was sold to Babcock Electronics of Costa Mesa, California in 1965. http://www.uaudio.com/blog/la-2a-analog-obsession, https://www.uaudio.com/webzine/2003/june/text/content4.html, https://en.wikipedia.org/w/index.php?title=LA-2A_Leveling_Amplifier&oldid=941889196, Creative Commons Attribution-ShareAlike License, The LA-3A, a transistorised version of the LA-2A, This page was last edited on 21 February 2020, at 08:00. It’s hard to imagine people throwing away vintage tube compressors back then, but tubes were old technology and solid state was all the rage. UAD Teletronix® LA-2A Classic Leveling Amplifier Plug-In When you buy products through links across our site, we may earn an affiliate commission. CS-1 Precision Channel Strip 7m 22s. Classic automatic gain control. They continued manufacturing the LA-2A, swapping the original gray faceplate with a silver one. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. Listings Price Guide. This is an original Teletronix Model LA2A (not the Universal Audio reissue). Excellent. UREI TELETRONIX LA-2A LEVELING AMPLIFIER SCH. Cakewalk has announced that is offering for free (limited time offer) its CA-2A Leveling Amplifier plugin for Windows and Mac OSX. ...they EQ all the warmth and low mids and bass. His revolutionary idea was to create the world’s first leveling amplifier utilizing optical sensors. The optical sensor T4 variant we worked to develop is customized for us. Teletronix. Please take a moment to review my edit . From that frustration was born the idea of a “leveling amplifier.”. In 1967 Studio Electronics (eventually renamed UREI), picked up Babcock's broadcast division, including the Teletronix brand. Compressor action occurs from the breakaway point at -30 DB input and up to -20 DB, at which point the curve becomes horizontal to exhibit limiting action. If the signal is below the threshold, then the release will be faster. The LA-2A has simple controls: a Peak-Reduction knob controls the gain of the side-chain circuit, and therefore, the gain reduction; a Gain Control for make-up gain; and a Limit/Compress switch which alters the compression ratio. Classic Leveling Amplifier with Vacuum Tubes, Optical Attenuator and Midas Transformers. 1965 Teletronix LA-2A Leveling Amplifier. If you watch the listing, we'll notify you if it becomes available again. It’s all about the slow, gentle, and versatile multi-stage release time. The average attack time is fixed at 10 milliseconds, but its unique release characteristic is what gives the LA-2A its definitive sound. While the initial release time is about 60 milliseconds for 50% of the release, the following 50% happens gradually over a period of one to 15 seconds before the signal comes back to 100%. The T4 cell’s primary components include an electro-luminescent panel and dual cadmium-sulfide photo resistors, one of which controls gain reduction, and the other the VU m… This is classic opto-compressor, Which uses electro-luminescent panel and photoresistors to provide gain reduction. TG's Collection. For manufacturing, Universal Audio located the special equipment originally used to manufacture the T4 back in the '60s, and had to requalify the manufacturer to make sure it could meet UA’s special production needs. [2] The LA-2A was inducted into the TECnology Hall of Fame in 2004. Here, producer Marco Polo (Masta Ace, Scarface, Talib Kweli, Pharoahe Monch) offers tips on how to use Apollo interfaces and UAD plug-ins to move beyond samples and spur your own creativity. 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. The fact that it offers 40 dB of gain from input to output allows it to also be used as a preamp and compressor. With painstaking care, every new LA-2A unit is point-to-point handwired at Universal Audio's Custom Shop in Santa Cruz, California, with every component carefully evaluated for authenticity. “Our DSP research helped us understand how the original T4 worked at the quantum physics level. My father purchased the product rights and the name Teletronix from Babcock Engineering in 1967, folding it into his Studio Electronics Corporation, shortly before … Outboard Gear. Jim Lawrence was born in 1924 and served in the Navy during WWII as a radar operator, studied electrical engineering and worked at JPL in his younger years, but he was also able to apply his skills to his true passion — radio and broadcasting. “The photocell is really hard to get right,” recalls Bill Putnam, Jr. “For our reproduction, we had a challenging time developing that part. The LA-2A has a sonic character that makes it sought after by many recording engineers. The 2A-KT draws inspiration from the original Teletronix LA-2A leveling amplifier, which was first produced in the early 1960s. 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. This shorter, cleaner wiring enabled the LA-2A to have a lower noise floor than its predecessor. By Computer Music (Computer Music) 09 June 2016. Autry’s fondness for the LA-1 was instrumental in its gaining acceptance. This timing of the release depends heavily on the length and strength of the incoming signal. It responds especially well to the human voice in a way that inspires performance.”. The Teletronix LA-3A Solid State Leveling Amplifier is the solid state successor to the well known Teletronix LA-2A. Universal Audio Teletronix LA-2A Classic Leveling Amplifier For the LA-2A, turret boards were placed in a long strip at the bottom of the chassis, helping tidy up the wiring inside the unit. Learn essential functions of popular tube and solid-state compressor varieties, and creative uses for your productions. In 1965, Jim Lawrence sold Teletronix to Babcock Electronics of Costa Mesa, California. Inspired by the mother of all optical compressors, Klark Teknik set the bar high for its KT-2A The fact that it offers 40 dB of gain from input to output allows it to also be used as a preamp and compressor. The Teletronix LA-2A was originally produced in the early 1960s by Teletronix, which was later acquired by Babcock Electronics Corporation. It uses an electroluminescent panel together with a cadmium-sulfide light dependent resistor to provide gain reduction, which in the LA-2A's own terminology is called the T4 cell. UAD Teletronix® LA-2A Classic Leveling Amplifier Plug-In. Though there have been reissues of the LA-2A, very little has changed from the original design, which is a testament to its reliability and linear response. Buy New. Teletronix was sold to Babcock Electronics of Costa Mesa, California in 1965. The LA-2A was originally produced in the early 1960s by Teletronix, which was later acquired by Babcock Electronics Corporation. Teletronix LA-2A Leveling Amplifier. The LA-2A Leveling Amplifier will produce essentially instantaneous gain reduction of over 40 DB with no increase in harmonic distortion. limiter. 4-710d Four-Channel Tone-Blending Mic Preamp w/ Dynamics. Let’s look inside the T4 optical attenuator, which is the heart of the LA-2A. If ever there is an official "Audio Technology Hall of Fame", it will definitely include a shrine to the iconic Teletronix LA-2A. Watch. JavaScript seems to be disabled in your browser. With painstaking care, every new LA-2A unit is point-to-point handwired in Scotts Valley, California, with every component carefully evaluated for authenticity. Make an Offer. Teletronix LA-2A Leveling Amplifier This is an original Teletronix Model LA2A (not the Universal Audio reissue) with original UTC HA-100X transformer (a key component that makes the original sound so … Blast from the past : Teletronix LA-2A Leveling Amplifier. The properties of the T4 give the LA-2A its unique character by making it an entirely program dependent design. It required working with the original manufacturer to perfect it, to dial it in to the specifications of the original photocells from the 1960s. Lawrence drew from his background with military optical sensors to design a circuit which would “level” the incoming audio signal. CA-2A is a plugin emulation of the legendary Teletronix LA-2A hardware compressor. In 1967 Studio Electronics (eventually renamed UREI), picked up Babcock's broadcast division, including the Teletronix brand. The inside of a T4A optical attenuator. The very epitome of vintage vibe, this classic compressor has bathed many a track in its incandescent tube glow. The fact that it offers 40 dB of gain from input to output allows it to also be used as a preamp and compressor. As the development of solid-state technology matured, UREI launched more limiting amplifiers with the patented T4 optical attenuator, but without the space-consuming tube-based circuitry. Buy Used. This optical attenuator, known as the T4, is what gives the LA-2A its gentle, program dependent optical compression, revered to this day by audio professionals worldwide. The fact that demand is increasing even as the design recently passed the 50-year mark is a testament to the fact that the LA-2A truly is a studio legend. Whisper-quiet operation and a wide, wide dynamic range make this tone-tool an unparalleled tone enhancer on stage and in the studio—its natural warmth and clarity are unmatched. Exploring Additional Compressors and Equalizers (EQs) Teletronix LA-3A 3m 36s. The LA-2A was inducted into the TECnology Hall of Fame in 2004. This site helps you to save the Earth from electronic waste! Considering the mystique and the high prices being paid for certain vintage professional audio products (Pultec equalizers, Neumann U47 microphones and numerous others) it's no wonder that manufacturers are "recreating" many of them at a breakneck pace. You must have JavaScript enabled in your browser to utilize the functionality of this website. Soon these broadcast compressors began showing up in recording studios around the country. “The heart and soul of the LA-2A is in the T4 cell,” explains Bill Putnam Jr. “All of the characteristics are right there. It has only two rotary controls, one for "Gain" and one for "Peak Reduction." Learn more 4.3 out of 5, based on 8 Reviews. $3,900 + $75 Shipping. I have just modified one external link on LA-2A Leveling Amplifier. With the LA-1A Effectrode employed a parallel tube plate design and they claim the LA-1A is "technically the quietest pedal or studio leveling amplifier ever made”.This tube plate design is the type of tube circuitry only ever found in high-end tube phono preamp stages for turntables. 3. LA-2A Leveling Amplifier by Universal Audio is a Virtual Effect Audio Plugin for macOS and Windows. Quick Responder. TRANSFER: You may not rent, lease, lend, sell, redistribute, sublicense or provide commercial hosting services with the Software. Little did he know at the time that his work on this Cold War-era project would spawn the Teletronix® LA-2A Leveling Amplifier — one of the most iconic compressors in history. It is these characteristics that have been greatly responsible … Listing Ended. As the light gets brighter, the photo resistor’s impedance increases which reduces the gain. Page 1. It's in excellent condition, very clean for its age. Why has the LA-2A remained so popular for recording engineers of all stripes, even fifty years after its original design? Download UREI TELETRONIX LA-2A LEVELING AMPLIFIER SCH service manual & repair info for electronics experts. 100% functional. In 1967 Studio Electronics (eventually renamed UREI), picked up Babcock's broadcast division, including the Teletronix brand. Service manuals, schematics, eproms for electrical technicians. Type: (PDF) Size 136.4 KB. Users may notice that it takes quite some time for the meter to return to 0 VU (no compression) after a long period of heavy compression. The original LA-2A is revered among audio pros and this hand-built reincarnation faithfully matches its characteristics. In 1958, Jim Lawrence founded the Teletronix Engineering Company in Pasadena, California, manufacturing broadcast products such as transmitter tubes, emergency tone generators, and full-scale radio transmitters. It functions as a VST Plugin, an Audio Units Plugin, an RTAS Plugin and an AAX Plugin. The LA-2 was the next iteration, featuring a larger VU meter than the LA-1, and the addition of the now legendary T4A optical attenuator photocell. He combined a luminescent panel with photo resistors (whose impedance changes relative to light intensity) and sealed them in a vacuum-tube-sized metal canister. Second Hand Sam Guitars . Bill Putnam purchased the product rights and the name Teletronix from Babcock Engineering in 1967, folding it into his Studio Electronics Corporation, shortly before he changed the name to UREI. A unique electro-optical attenuator system provides instantaneous gain reduction with no increase in harmonic distortion (less than 0.5%). UAD Hardware is … Find link is a tool written by Edward Betts.. searching for LA-2A Leveling Amplifier 1 found (6 total) alternate case: lA-2A Leveling Amplifier Valve Amplification Company (499 words) case mismatch in snippet view article find links to article it redeveloped and produced the first 200 recreations of the LA-2A leveling amplifier for Universal Audio in 1998. Whether by serendipity or intent, Jim Lawrence’s T4 design had a musical response that allowed the LA-2A the sonic and technological longevity it still retains. Though the T4 cell makes the LA-2A shine, the overall transformer and tube amplifier design of the LA-2A also plays a huge part in its longevity and popularity. And unless you hit them way hard and make the tubes sizzle they don't really distort. Teletronix LA-2A Leveling Amplifier Vintage Tube Compressor Limiter. The T4 cell’s primary components include an electro-luminescent panel and dual cadmium-sulfide photo resistors, one of which controls gain reduction, and the other the VU meter in Gain Reduction mode. Sales. Three versions of the LA-2A were made until 1969. No one else has it.”. Universal Audio’s Teletronix LA-2A Classic Leveling Amplifier reissue provides the performance characteristics of the iconic original. His first leveling amplifier was the Teletronix LA-1, of which only about one hundred units were ever made. [3], The LA-2A is a hand-wired, tube-based compressor. Simi Valley, CA, United States. One got into the hands of the legendary singing cowboy Gene Autry, who loved it and used it for his radio program and recording sessions. Whether hardware or DSP, it is this special qualified manufacturing process and “recipe” UA re-established that gives the LA-2A its unique, musical sonic quality to this day. Los Angeles, CA, United States. Though Universal Audio spent a long time perfecting the T4 for their hardware LA-2A reissue, its unique design wasn’t fully understood until UA began the research to model the LA-2A for the UAD Powered Plug-Ins platform in 2001. But, it wasn’t an easy task. Message Seller. 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. Teletronix LA-2A Classic Leveling Amplifier (Legacy) 5m 30s. “To say it was hard is an understatement,” says Universal Audio Product Manager Will Shanks, “We were asking a manufacturer to revert back to manufacturing methods that were archaic and a step backwards in the technology.”. The LA-2A Leveling Amplifier is an audio compressor invented by James F. Lawrence II, founder of the Teletronix Engineering Company in Pasadena, California in the early 1960s. The Teletronix LA-2A Leveling Amplifier is practically the definition of vintage audio gear. Since then, Teletronix leveling amplifiers have been prized for their smooth musical sound, and audio engineers have utilized them at all stages of the recording process - from tracking to mastering. Note the, Jim Lawrence's first limiting amplifier was the LA-1, of, Turret boards were added to the LA-2A design, resulting in, Shortly after Universal Audio was refounded in 1999, the. The unique characteristics of the T4A electro-optical attenuator have been maintained. In the early 1950s, Jim Lawrence, a young University of Southern California-degreed electrical engineer, was quietly asked to join Cal Tech’s Jet Propulsion Laboratory (JPL), where he was assigned the task of developing optical sensors for the Titan Missile Program. It's a totally different device in terms of construction where all the compression magic happens inside an optically coupled element formed by a fluorescent panel and some photocells: the famed T4A element. “Actually, we’re selling more of the hardware LA-2As now than we ever have,” Putnam replied. a pre-determined point, and due to its unique deSign, functions as a combined compressor and . *LA-2A is a registered trademark of Universal Audio, Inc. Cakewalk’s products, specifically, the CA-2A T-Type Leveling Amplifier, is develope… “Modern photocells are designed to be as fast as possible, but they don't have the right multi-stage response needed to sound like a Teletronix design,” explains Shanks. This not only allowed us to develop an accurate DSP model of the gain reduction behavior, it also helped us make our hardware T4 more consistent.”. By today's standards, the Teletronix LA-2A Leveling Amplifier from Universal Audio appears to be a rather primitive compression device. The White 2A Leveling Amplifier is based on a legendary vintage unit that is entirely tube-based. Nowadays, this predecessor to the LA-2A is extremely rare and hard to find, but is still revered for its own unique, slow, time constant. During a stint at KMGM in Los Angeles, he became frustrated with having to ride the gain to maintain a constant signal level on the air. No expense has been spared to bring that classic sound to your recordings. How does it work? A variety of cosmetic changes were made as well — including changing the metering switch from a multiposition toggle switch to a rotary switch. In 1967, Bill Putnam’s company, Studio Electronics (eventually renamed UREI), picked up Babcock’s broadcast division, including the Teletronix brand. As the input level decreases, the light dims and the resistor’s impedance decreases. Shipped From. Teletronix LA-2A Leveling Amplifier. Bring this coveted classic compressor to your host audio software. “It treats your signal so lovingly,” says Bill Putnam Jr., CEO of Universal Audio. 124. LA-2As warm things up. The Effectrode ® ‘LA-1A’ Leveling Amplifier is a high-end, studio-grade vacuum tube compressor in a pedal. The T4 optical attenuator in the LA-2A is both program and frequency dependent, allowing the compression ratio to vary greatly based on the source material. The LA-2A Leveling Amplifier is an audio compressor invented by James F. Lawrence II, founder of the Teletronix Engineering Company in Pasadena, California in the early 1960s. An engineer by the name of Sid Feldman purchased an early LA-2 and showed it to the engineer on the hugely influential and popular Ed Sullivan Show. The LA-2A Leveling Amplifier is designed to prevent an increase in output level beyond . Some 40 years after its invention, the story of the Teletronix LA-2A continues to be written, but one thing that remains constant is … That is, until engineers began to miss the slow, unique compression of the LA-2A and prices for used units started to climb. Universal Audio Teletronix LA-2A Leveling Amplifier. This is an improvement that many mixing engineers will find useful for a wide variety of use cases, such as ducking or pumping of synth sounds in EDM.
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