Langevin Stereo Electro Optical Limiter

Stereo Electro Optical Limiter description:

The Langevin STEREO ELECTRO OPTICAL LIMITER Stereo Limiter. Highly respected, very fine for tracking vocals, bass, and acoustic guitar.

The Langevin STEREO ELECTRO OPTICAL LIMITER or the Langevin ELOP as it is also known, makes your job easy with a set it and forget it approach. The principle of operation is based around using a rectified sample of the audio to shine an LED (Light Emitting Diode) onto an LDR (Light Dependent Resistor). The photo-resistor in combination with a fixed resistor simply act as a changing voltage divider to attenuate the signal - like a smart volume control. A similar principle was found in the older Teletronix & Urei LA-2A, LA-3, and LA-4 units which used a slower electro-luminescent panel-light on a conventional LDR encased in a light-tight enclosure. Langevin uses modern VACTROL technology (but with a trick) for exact sample-to-sample tracking and no high frequency loss while digging deep into limiting - problems commonly associated with older LA-series limiters and other opto - based units. The audio signal passes only through all-discrete Class A amplifiers in the Langevin version. Each channel can be run separately or switched to stereo - link . Due to their inherently quick attack, these Electro- Optical Limiters are skilled soldiers for tracking vocals or individual instruments. A real secrect weapon to control the transients on vocals.

The main features of the Langevin STEREO ELECTRO OPTICAL LIMITER include:

• Highly respected, very fine for tracking vocals, bass, and acoustic guitar
• ALL DISCRETE audio path
• Balanced XLR inputs and outputs
• Unbalanced 1/4 inch inputs and outputs
• Silent conductive plastic INPUT attenuators
• Max. GAIN REDUCTION 22dB
• ATTACK time 10mS for 6dB GR
• RELEASE: 2.5 Seconds for 6dB GR
• BYPASS switches
• Sifam VU METERS
• Meters switch to read OUTPUT or REDUCTION
• STEREO LINK switch
• THD = 0.015% @1khz
• S/N Ratio: 126dB
• Gain: -2 dB to 12 dB (adjustable)
• Power consumption (120/240VAC): 24 watts
• Dimensions: 19 x 1 3/4 x 10 inches (occupies 1u)
• Shipping weight: 9 lbs.