APB DynaSonics ProSpec 1U4M4S Mic Line Mixer

The ProSpec™ 1U4M4S single rack space mixer has 4 mono mic/line input channels and 4 stereo line input channels designed for use in mono, stereo, and LCR.

This mixer has 4 channels of professional quality Burr-Brown mic preamps, and 4 balanced stereo line input channels. An individual solo switch is on each mono and stereo input channel. Input channels are individually assignable to left-right or mono (center) mix bus.

Mono input channels have level and pan controls, 48V phantom power, high pass filter, polarity reverse, and assignment switches. Stereo input channels have level and balance controls, mute, polarity reverse, and assignment switches. Mono input channels use Neutrik XLR/1/4" combo connectors and TRS insert points, while stereo inputs use individual high quality 1/4" balanced left and right input connectors.

Monitor headphone level control with 1/4" and 1/8" headphone connectors and rear panel APB mixer link connector. Other features include individual left right and mono metering, and low phase-shift.

APB DynaSonics ProSpec 1U4M4S Features

• Designed to operate in Mono, Stereo, or LCR applications
• Front panel switches are internally illuminated
• 4 mic preamps
• 4 balanced stereo line inputs
• Solo switch on each input
• Assignable input channels
• Mono and stereo input channels
• Monitor headphone level control

• ProSpec 1U4M4S Mic Line Mixer1

• Mono Input Channel
  • Balanced Mic Input (XLR Input of Combo Connector)
    • Mic Gain (Max): 60 dB
    • Mic Input Z: 2k Ω
    • Mic EIN: -127 dBu @ 60dB gain, 150 Ω source
    • THD + Noise (Mic input to Main Output) <0.005% @ 15dBu Output and with 40dB Gain >200kHz (ref to 1kHz)
    • Bandwidth Microphone Input to Main Output @ 60dB Gain: approx 160 kHz (ref 1kHz)
    • Phase response: +/-11 degrees, 20Hz to 20kHz (ref 1kHz)
    • HPF: 75Hz @-18dB/Octave
    • Unity Gain approx 2 o’clock Pot rotation
  • Balanced Line Input (TRS input of Combo Connector)
    • Line Gain (Max): 42 dB
    • Line Input Z: >10k Ω
    • THD + Noise (Line input to Main Output) <0.01% @ 15dBu Output
    • Bandwidth: approx 160kHz (ref to 1kHz)
    • Line Input to Main Output
      • Phase Response: +1.5/-17.5 degrees 20Hz to 20kHz (ref 1kHz)
      • Unity Gain: approx 10 o’clock Pot rotation; 10 dB Gain at approx 2 o’clock Pot rotation
• Stereo Channel
  • Balanced Line Input (TRS)
    • Max Gain: 20 dB
    • Line Input Z: >10k Ω
    • THD + Noise (input to Main Output) <0.005% @ 15dBu
    • Output Bandwidth: >200kHz (ref to 1kHz)
    • Input to Main Output Phase Response +3/-9 degrees, 20Hz to 20kHz (ref 1kHz)
    • HPF: 40Hz @-18dB/Octave
    • Unity Gain: approx 10 o’clock Pot rotation; 10 dB Gain at approx 2 o’clock Pot rotation
• Outputs
  • Balanced XLR using OutSmarts® Driver ICs (also capable of unbalanced operation)
    • Max Output Level: +26dBu (into 600 ohms or greater)
    • Balanced Output Z: 50 Ω
    • Residual Output Noise: < -95 dBu *All channels unassigned and channel sends down, Master at unity (2 o’clock)