CS 104

CS 104 'ENG' Style Four-Channel Mixer
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CS 104 Brochure
(241 kb pdf file - requires Adobe Acrobat to download and view)

CS 104 Operation Manual
(2MB - Requires Adobe Acrobat to download and view)


Cooper Sound Systems presents a new 'ENG' style mixer incorporating all (and more) of the most requested features for an 'over-the-shoulder' portable field mixer. The Cooper 'ENG' mixer has been designed for ease of operation, reliability and superior audio quality. All controls are located on the front and side panels and are ergonomically laid out for operator convenience. Components are of the highest quality. The mixer is housed in a sturdy metal chassis built to withstand the rigors of location recording.

Front panel: (left to right)
  • Four input channel sections including:
    Pan pots, High pass filters, Peak indicators, Pre-fade listen, Level control Ch. 1/2 and 3/4 can be independently linked for stereo applications
  • Output Section includes: Slate microphone Master level control Slate and oscillator switches
  • Battery test, meter illumination, limiter (on, off, link) and tape/direct switches
  • Analog meters (Peak or VU); Limiter threshold LEDs
  • Power on LED
  • Headphone monitoring selector - L only, R only, Stereo, Mono, M/S

CS104 Right Side Panel

Right Side panel: (left to right)
  • Internal/external power switch (with center off position)
  • Tape return level control
  • 10-pin 'video' connector (for hardwire connection to camera)
  • 3-pin XLR's - Balanced left, right outputs
  • Mix bus connector (to daisy-chain additional mixers)
  • Mic/Line Switches - switches XLR, &10-pin connector outputs
  • Unbalanced left & right outputs for wireless feeds, etc.
  • Tape out - for cassette recorders
  • Monitor in - for tape return from camera/recorder
  • 4-pin XLR external power connector
  • Battery compartment


CS104 Left Side Panel


Left Side panel: (left to right)

  • Four XLR inputs
  • Line and mic gain selectors (4 positions)
  • Phase reverse, Ch. 2 & 4
  • Mic power selectors 48 volt, 12 volt 'T'
  • Headphone level control
  • Headphone jack

Additional Features:

  • Jensen transformer coupled inputs and outputs
  • Machined and anodized front panel
  • Multiple output connectors, balanced & unbalanced for versatility in the field.


    Internal batteries: Eight 'AA' cells
    Weight: 4.8 lbs.
    External power: 4-pin XLR
    Battery Life: 10-12 hours(Alkaline cells/NP1 battery)
    THD + N (20-20 kHZ): 0.01% (Typ. 0.005%)
    EIN (150 ohms)(20-20 kHZ): -128 dBU
    Size: 10.9 x 6.8 x 2.5 inches
    Made in U.S.A.

(All specifications in this brochure are subject to change without notice.)

© Cooper Sound Systems, Inc.