Stereo Compressor/Limiter & Expander
Manufactured by Q2 Audio in close collaboration with Audio & Design,
this remake of the classic Compex is authentic in every detail and
reproduces the exact sonic qualities of the original product.
Using the original discrete analogue circuit design employing a feedback
FET technique and maintaining the use of the same components that give
this product such a distinctive sound, the new Compex compressor/limiter
& expander/gate will add dynamic punch to your sound as well as
controlling peak excursions and gating unwanted instrument/vocal artefacts
The Compex was used by major recording artists worldwide throughout the
60?s, 70?s, and 80?s. This famous, iconic processor was instrumental in
shaping the sounds of that era.
Now the Compex returns to place it?s unique signature on the sounds of
Viva La Compex!
Major Features include:
- Dual channel/stereo level control offering simultaneous compression
gain reduction with peak limiting and expansion/gating.
- Precision calibrated compressor/limiter threshold control which
allows the user to ?dial up? the amount of compression required before
peak limiting occurs.
- Switched Compression values from 1:1 (amplifier), 2:1, 3:1, 5:1, 10:1
& 20:1 (limiter).
- Ultra fast compressor and expander attack values.
- Auto dual platform release function ? allows fast transient recovery
on a ?build-up? slow release.
3 pin XLR - Unbalanced - (pin 2
hot). Normal imp 10KO
Side Chain Insert:
Compressor side chain insert: Normalised 3 pole jack (type
B) Tip= return, Ring= send, Sleeve= Ov
3pin XLR ? Unbalanced (pin 2 hot). Source Imp < 1O;
Maximum output level normally +18dBu ? unbalanced. /T option with
balancing transformers +22dBu, source Imp <75 O.
*/T option: Balanced input/output fully isolated transformers to
34dB with input/output attenuators fully open. Unity gain
in Bypass mode.
Peak Limiter: +14dBu maximum with
unattenuated output. Referred to unattenuated input level 20dBu.
Compressor: Calibrated with reference to Peak
Limiter thresholds and marked 0 ? 20dB in 2dB steps. (Reference to
unattenuated input level this is -20dBu to -40dBu).
Expander/Gate: -40dBu to
+14dBu, with reference to input.
Peak Limiter : 250mS,
Compressor: 25mS, 50mS, 100mS, 200mS, 400mS,
800mS, 1.6 secs, 3.2 secs + Auto release function.
Expander/Gate: Continuously variable from 25mS to 5
Peak Limiter: < 250uS for 100% control of
overshoot ? without any over limiting. (measured at 1KHz for 10dB gain
Compressor: 250uS, 2.5mS, 25mS.
Expander/Gate: 20uS, 2mS, 40mS .
Measured at 1KHz for 10dB compression & 3.2 secs
Compressor: at +10dBu threshold <0.1%
Peak Limiter : at +14dBu threshold <0.3%
Unbalanced: 30Hz ? 20KHz, +0dB, -0.5dB. Balanced
(/T option): < -1dB at 30Hz & 20KHz.
Signal ? Noise Ratio:
Referred to Peak Limiter threshold level as set by output
attenuator: better than -80dB; with Expander operational, better
than -87dB (Measured with low pass filter -3dB at 25HKz ).
Control volts matching on compressor and expander sections
to within ±1dB of each other, consequently no image shift during
Selectable Peak Limiter operation:
Peak Limiter on ? off or Pre-emph (50uS time constant).
Overall Gain Reduction Meter scaled 0 ? 20dB in 4dB
divisions. White scale on black background with yellow pointer.
Peak Limiter operating: Red indicator
Compressor operating:Orange indicator Expander/Gate
operating: Green indicator
Power: 110v ? 240vac 50/60Hz ?
Selectable working voltage for 110 -120v & 220 ? 240v
482.6mm (19") wide x 88.9mm (2U) high
x 229mm deep
Weight: 3.5Kg (net)