Professional 4 Channel Line Level Mixer - Microphone and line Output

  • Four Channel Line-Level Audio Mixer
  • XLR Balanced, Phono Jack Unbalanced Inputs
  • Mic or Line XLR Output, Switchable
  • Unbalanced Line Output and Direct Input
  • Studio Quality, Low-Noise Performance
  • Expansion Bussing Capability
  • Additional Line Inputs Bussed to an RU-MX4
  • Output Isolation Transformer (RU-MX4LT)
  • Recommended Power Supply ( Not Included )
    PS-24AS (USA)PS-24AX (International)


    The RU-MX4L is the ideal choice in many applications where a combination of balanced and/or unbalanced line-level signals needs to be mixed. Balanced connections use XLR connectors. Unbalanced signals are coupled through phono jacks. Each of the four RU-MX4L inputs can accept either a balanced XLR line-level input or an unbalanced line-level phono jack input. The unbalanced phono jack LINE OUTPUT from one RU-MX4L may connect to the unbalanced input of other equipment, or may be connected to the DIRECT input of another RU-MX4L or an RU-MX4 to expand mixing capabilities. The RU-MX4L provides one balanced output, switchable for mic or line level. Audio levels are adjustable on the front panel. Each input channel is equipped with a front-panel dual-LED VU meter that follows standard VU ballistics. The final mix is displayed on an LED string VU meter featuring a visually comfortable arc motion. A factory installed output isolation transformer is available by ordering the RU-MX4LT.


    Balanced Line Inputs(4):20 kΩ balanced bridging
    Balanced Line Input Level:
    -13 to +22 dBu for +4 dBu output
    Unbalanced Line Inputs (4):
    2 kΩ unbalanced
    Unbalanced Line Input Level:
    -25 dBV to +20 dBV for +4 dBu output; -10 dBV nominal
    Gain Adjustments (4):Balanced Line: Off to 17 dB gain
    Unbalanced Line: Off to 27 dB gain
    Output Attenuator:0 dB to infinity
    Frequency Response:20 Hz to 30 kHz (± 0.25 dB)
    THD+N:< 0.01%
    Residual Noise (below +4dBu output):
    4 line level sources (unity gain): < -82 dB (wideband)
    Outputs (2):+4 dBu 150 ohm balanced (switchable to MIC level -45 dBu); -10 dBV unbalanced
    Indicators (17):Dual-LED VU meter for each input; POWER LED;
    LED audio mix level meter, 0 dB = +4 dBu
    VU ballistic: -20 dB, -10 dB, -6 dB, -2 dB, 0 dB, +3 dB;
    Peak reading: +8 dB,+12 dB
    Ambient Operating Environment:0° C to 50° C
    Power Requirement:GROUND-REFERENCED, 24 Vdc @ 150 mA,
    Package Type:Cardboard Box
    WEEE weight:1.36 lbs.
    Shipping Weight:1.625 lbs.
    Tariff code:8543.70.9860
    Package Dimensions:6 x 6 x 2.625 in.

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    CAD FilesUnitsFormat
    Engineering Functional BlockAmericanDXF
    Panel Diagram - FrontAmericanDXF
    Panel Diagram - RearAmericanDXF
    Panel Diagram - FrontMetricDXF
    Panel Diagram - RearMetricDXF
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