RDL RU-MX4LT Pro 4 Input Line Mixer - Mic and Line Out


Please Note: requires PS-24AS Power Supply (sold separately)

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  • The 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 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 may connect to the unbalanced input of other equipment, or may be connected to the DIRECT input of another or an RU-MX4 to expand mixing capabilities. Up to 3 RU-MX4 type mixers may be rack mounted in a single rack unit using an RDL RU-RA3HD rack adapter. The 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 T.

    • 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 (T)
  • Balanced Line Inputs(4): 20 k balanced bridging
    Balanced Line Input Level:
    -13 to +22 dBu for +4 dBu output
    Unbalanced Line Inputs (4):
    2 k 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
    Power Requirement: GROUND-REFERENCED, 24 Vdc @ 150 mA,
    Ambient Operating Environment:0 degrees C to 50 degrees C
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