543 Compressor
500 Series Module
From Rupert Neve Designs:
Whether you’re tracking, mixing or mastering, the 543 delivers unobtrusive, musical dynamic control and high-ratio limiting with massive flexibility, transparency and precision.
The 543 features a fully controllable compressor-limiter with feed-forward / feedback modes, Peak / RMS detection and a built-in side chain high pass filter. With an unrivaled heritage and a tremendous feature set, the 543 provides an astonishing degree of flexibility and precision.
Every compressor has a gain control element in its circuit, and this is generally what determines the “sound” of the compressor. Some compressors use tubes, some use FETs, some use light-dependent resistors, some use a diode bridge – but in the 543, a VCA (Voltage Controlled Amplifier / Attenuator) is used to control the signal’s gain.
Specs
- Gain range
- Continuously variable from -6 dB to +20 dB
- Threshold range
- Continuously variable from -30 dB to +20 dB
- Ratio range
- Continuously variable from 1.1:1 to Limit (40:1)
- Attack range
- Continuously variable from 20mS to 75mS
- Release range
- Continuously variable from 100mS to 2.5 Seconds
- THD+N (@ 1 kHz, 0 dBu output level, no load)
- Main Output, compressor bypassed: Better than 0.002%; @ 20 dBu better than 0.0015%; Main output, compressor engaged: Better than 0.075%
- Noise (main output, un-weighted, 22 Hz - 22 kHz, terminated 50 Ohm)
- With Gain at Unity, Compressor disengaged: Better than -98 dBu; With Gain at Unity, Compressor engaged: Better than -93 dBu
- Frequency response
- Main Output, Unity Gain: @ 150 kHz -3 dB
- Meters
- For monitoring OUTPUT LEVEL and GAIN REDUCTION
- Line input impedance
- 10,000 Ohms
- Maximum output level
- 21 dBu from 20 Hz to 40 kHz
- Power requirements
- 500 series rack with 110-125 mA @ +/- 16V
- Dimensions
- 1x 500 Series Module: 1.5” W x 5.9” D x 5.25” H (3.8 cm W x 15 cm D x 13.3 cm H)
- Weight
- 1.5 lbs. (0.7 kg)
Source: Rupert Neve Designs 543 product page