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Professional 4 Channel Microphone/Line Mixer with Phantom Power, Microphone & line output

Professional 4 Channel Microphone/Line Mixer with Phantom Power, Microphone & line output

Part #: RU-MX4   Manufacturer: Radio Design Labs

Price: $274.37
Retail: $399.56
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Product Description

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.

Microphone Inputs (4): 2 kΩ 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 kΩ 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 Ω bal. (switchable to MIC level -45 dBu);
-10 dBV unbalanced
Balanced Output Coupling: Elec. bal. (RU-MX4) or 600 ΩTransformer (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° C to 50° C

Additional Information

Manufacturer: Radio Design Labs
Part#: RU-MX4
Unit: Each
Carton: 1

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