RDL RU-MX4 Pro 4 Input Mic/Line Mixer W/Phntm - Mic and Line Out


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Dale #:RDL-RUMX4

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

Availability: Usually ships in 5 - 10 Days

This item usually ships within 5-10 days after your order is placed. Your payment will be charged after completing checkout.
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  • The RU-MX4 is the ideal choice in many applications where a combination of balanced mic 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 mic or an unbalanced line-level input. 24 V phantom is individually switch selectable for each mic input. The unbalanced phono jack LINE OUTPUT from one RU-MX4 may connect to the unbalanced input of other equipment, or may be connected to the DIRECT input of another RU-MX4 to expand mixing capabilities. Up to 3 RU-MX4 mixers may be rack mounted in a single rack unit using an RDL RU-RA3HD rack adapter. The RU-MX4 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 rear-panel switch allows the soft-knee compressor to be switched in or out. A factory installed output isolation transformer is available by ordering the RU-MX4T.

    • Four Channel Audio Mixer with Expansion Capability
    • XLR Microphone Inputs, Phono Jack Line Inputs
    • Switchable 24 V Phantom for Each Mic Input
    • Mic or Line XLR Output, Switchable
    • Unbalanced Line Output and Direct Input
    • Integral Compressor/Limiter, Switchable
    • Studio-Quality, Low-Noise Performance
  • Microphone Inputs (4): 2 k balanced, switchable 24 V phantom (IEC 1938: 1996-12)
    Mic Input Level for +4 dBu output: -58 to “20 dBu (PHANTOM OFF or ONHI gain) -41 to “4 dBu (PHANTOM ON LO gain)
    Line Inputs (4): 2 k unbalanced
    Line Input Level for +4 dBu out: -25 dBV to +20 dBV, -10 dBV nominal
    Gain Adjustments (5): Mic: Off to 62 dB gain (PHANTOM OFF ONHI gain)
    Off to 46 dB gain (PHANTOM ON LO gain)
    Line: Off to 27 dB gain
    Output Attenuator: 0 dB to infinity
    Frequency Response: Mic: 80 Hz to 30 kHz (+/- 1.5 dB),
    <-10 dB @ 20 Hz (integral high-pass filter)
    Line: 20 Hz to 30 kHz (+/- 0.25 dB)
    THD+N: Mic: < 0.1% (80 Hz to 20 kHz)
    Line: < 0.02%
    Residual Noise (wideband,
    below +4 dBu output):
    Unity Gain: < -84 dB (4 Line level sources)
    40dB Gain, Phantom on: Mic: -79 dB < -73 dB (All 4 mic level sources)
    50dB Gain: Mic: -79 dB < -73 dB (All 4 mic level sources)
    60dB Gain: Mic: -70 dB < -64 dB (All 4 mic level sources)
    Outputs (2): +4 dBu 150 bal. (switchable to MIC level -45 dBu)
    -10 dBV unbalanced
    Balanced Output Coupling: Elec. bal. (RU-MX4) or 600 Transformer (RU-MX4T)
    Indicators (18): Dual-LED VU meter for each input
    COMP/LIMIT active LED POWER LED LED audio mix meter,
    0 dB = +4 dBu
    VU (dB): -20, -10, -6, -2, 0, +3 Peak Reading (dB): +8,+12
    Power Requirement: GROUND-REFERENCED, 24 Vdc @ 150 mA
    Ambient Operating Environment:0 degrees C to 50 degrees C
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