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
- 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 ohms 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 ohms bal. (switchable to MIC level -45 dBu);
-10 dBV unbalanced
- 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
- Ambient Operating Environment:0° C to 50° C
- Power Requirement:GROUND-REFERENCED, 24 Vdc @ 150 mA
- Package Type:Cardboard Box
- Package Dimensions:6 x 6 x 2.625 in.
- Shipping Weight:1.845 lbs.
- WEEE weight:1.59 lbs.
- Tariff code:8518.40.2000
