Rupert Neve Designs Portico 5045 Primary Source Enhancer

Rupert Neve Designs 5045 Primary Source Enhancer is an amazing box that will assist mixing engineers where unwanted background sounds bleed into mics. Imagine inserting the 5045 over a podium mic, making a few adjustments to the very easy to use knobs on the front panel, and realizing how the intelligibility of that mic increases. The 5045 will handle or reduce unwanted signals well in excess of 20dB, if needed. By simply reducing the background sounds relative to the main audio source, the additional clarity and gain before feedback realized is quite stunning.


Threshold Continuously variable from -20 to 10dBu
Depth Continuously variable from 0 to 20dBu
Time Constants
RMS Mode:Peak Mode:
A: 50mS B: 100mS
C: 200mS
D: 750mS
E: 1.5S
F: 3S
* RMS Mode Time Constant data collected using 10dB bursts.Attack: fixed 20mS
A: 20mS
B: 200mS
C: 1S
D: 2S
E: 5S
F: 30S
Maximum Output Level +25dBu
Total Harmonic Distortion and Noise
Feedback Suppressor Bypassed:
Feedback Suppressor Engaged:
Main Output
Better than 0.002%
Better than 0.002%
Feedback Suppressor Bypassed:
Feedback Suppressor Engaged:
Measured @ Main Output, un-weighted, 22Hz-22kHz, 50 ohm terminated input
Better than -100dBu
Better than -95dBu
Frequency Response
Main Output
@ 20Hz -3dB
@150kHz -3dB
Measured Channel to Channel
Better than -80dB @ 16kHz