The Rupert Neve Designs Portico 5043 Compressor Limiter Duo (Horizontal Mount) is an analog signal processing device designed for both recording and mixing applications. For processing, the device consists of two independent compressor-limiters designated "A" and "B". Each can be used on its own, connected together for stereo operation, or connected sequentially to enable composite compression.

The Rupert Neve Designs Portico 5043 Compressor Limiter Duo (Horizontal Mount) is an analog signal processing device designed for both recording and mixing applications. It can be rackmounted horizontally in an optional Rupert Neve Designs 5221-RM rack-mounting frame. For processing, the device consists of two independent compressor-limiters designated "A" and "B". Each can be used on its own, connected together for stereo operation, or connected sequentially to enable composite compression.

The compressor is used to control the dynamics of an incoming signal. When the amplitude of the incoming signal exceeds the compressor's user-specified threshold, the compressor will reduce the incoming signal according to a user-specified ratio. You can set the threshold between -36 dB to +22 dB and the ratio between 1.1:1 and 40:1. For finer-tuned controls, you can set the compressor to engage the incoming signal at a speed of 20 to 75 mS with the attack knob. You can also set the compressor to disengage a signal between a speed of 100 to 2,500 mS via the release knob. By adjusting the threshold, ratio, attack time, and release time you can compress and enhance the dynamic range of the signal so that the quiet sounds and loud sounds are closer to one another in volume. After compressing a signal, you can also use the Portico's gain knob to attenuate or make the signal louder and punchier overall between a range of -6 dB to 20 dB.

As an added feature, the compressor can also function as a limiter when set to a very high ratio, such as 40:1. If the incoming signal exceeded the threshold by 40 dBU, the outgoing signal would exceed the threshold by only 1 dBU. Using the compressor as a limiter prevents the signal from clipping and protects the rest of the equipment in your signal chain.

Gain Range Continuously variable from -6 to +20 dB
Threshold Range Continuously variable from -36 dB to +22 dB
Ratio Continuously variable from 1.1:1 to "Limit" (40:1)
Attack Continuously variable from 20 to 75 mS
Release Continuously variable from 100 to 2500 mS
Compressor Feed-Forward or Feed-Back VCA control
Inputs Selectable 
2 x XLR 

2 x 1/4" Buss input jack for Portico series Buss outputs
Maximum Output Level Balanced and Floating Transformer Output: +25 dBu
THD & Noise At 2 kHz, +20 dBu output level, no load

Main output, compressor bypassed: better than 0.001%

Main output, compressor engaged: better than 0.06%

Noise: mostly 2nd harmonic

Measured at main output, un-weighted, 22 Hz to 22 kHz, terminated 40Ω

With gain at unity, compressor disengaged: better than -103 dBu

With gain at unity, compressor engaged: better than -92 dBu
Frequency Response Main output, unity gain at 18 Hz: -3 dB 

Main output, unity gain at 150 kHz: -3 dB
Crosstalk Measured channel to channel: Better than -80 dB at 16 kHz
Meters Monitors INPUT LEVEL and GAIN REDUCTION of either channel A or channel B
Power Voltage Range: 9 to 18 VDC, 9 W 

Connector: 0.2 x 0.1" (5.5 X 2.5 mm) DC jack, center positive
Current Consumption At 9 VDC: 1.0 A typical 

At 12 VDC: 730 mA typical 

At 15 VDC: 570 mA typical 

At 18 VDC: 480 mA typical
Dimensions (W x H x D) 9 x 1.75 x 8.5" (22.9 x 4.4 x 21.6 cm)
Weight 8 lb (3.6 kg)

The Gear Rack

Share this page

This piece of gear has limited suppliers. Processing may take longer than usual.