Rupert Neve Designs 5045 Primary Source Enhancer 2-Channel Background Noise Reduction System

The 5045 Primary Source Enhancer is exceptionally useful at reducing feedback without negatively impacting the sonic integrity of the source signal, effectively increasing the level a microphone can be raised before feedback occurs in a live sound environment by up to 20dB. With controls that are very simply laid out and generally require minimal adjustment, the 5045 is an invaluable tool for churches, stadiums, performance halls, or any venue where feedback is problematic. The 5045 shares some traits with conventional "noise gates", but operates on a different principle. One common aspect is that both reduce the gain during the absence of signal – or more specifically, both begin to attenuate when the level of a signal falls below a certain user-defined threshold. The 5045 senses when someone is speaking or singing into the mic and allows the signal to pass through, and senses when the person has stopped talking or singing and reduces the gain appropriately, which helps reduce the system’s tendency to feed back. Most importantly, the 5045 does not require filtering and digital processing to achieve significant benefits.

Features

• All-analog design
• Simplified controls for Depth, Threshold, Time Constant, and RMS/Peak
• An invaluable tool for any venue where feedback is a problem
• Effectively increases mic level by up to 20dB before feedback occurs
• Won't negatively affect the sonic integrity of the source

Specifications

• Threshold: Continuously variable from -20 to 10dBu
• Depth: Continuously variable from 0 to 20dBu
• Time Constants:
  • 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
• Release:
  • A: 20mS
  • B: 200mS
  • C: 1S
  • D: 2S
  • E: 5S
  • F: 30S
• Maximum Output Level: +25dBu
• Total Harmonic Distortion and Noise:
  • Feedback Suppressor Engaged: Main Output
  • Better than 0.002%
• Noise:
  • 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
• Crosstalk:
  • Measured Channel to Channel
  • Better than -80dB @ 16kHz