Each input level is set while observing the LED output level meter. The dual-LED output meter follows standard VU ballistics. The intensity of the green LED progresses from minimum at -11 dBu to full intensity at +4 dBu.
The flexibility of switching each input and the output between MIC or LINE allows installers to address a wide variety of mixing solutions with only one product type.
Audio Mixing with Up To Three Inputs
Switch-Selectable Mic or Line Inputs
Switch-Selectable Mic or Line Output
Add Additional Microphone or Line Level Inputs to an Existing Mixer
Combine Signals of Different Level, Impedance, or Balanced/Unbalanced Configuration
Mic: 600 ohm;
Line: 50 Kohm, balanced
Maximum Input Signal:
Mic: -18 dBu;
Line: +25 dBu
Gain (each input):
Mic: Adjustable from OFF to 60 dB
Line: Adjustable from OFF to 21 dB
150 ohm balanced;
75 ohm unbalanced
Mic: 50 dB below line level
Line: +4 dBu nominal
Mic (@ 50dB gain): < 0.04%
Line: < 0.008%
Mic: 50 Hz to 100 kHz (+/- 1 dB)
Line: 10 Hz to 100 kHz (+/- 0.05 dB)
Noise (each input):
Mic: < -70 dB (50 dB gain)
Line: < -82 dB (unity gain)
Mic: > 60 dB
Line: > 50 dB, (50 to 120 Hz)
GROUND-REFERENCED, 24 VDC @ 55 mA
Ambient Operating Environment:
0° C to 55° C
MCM Part #: 555-18918
Radio Design Labs Part #: ST-UMX3
Package Specifications & Dimensions
Weight: 0.125 lbs.
RoHS Comp: Yes
Warranty: 1095 days Need to Return?
Length: 4 in.
Width: 2 in.
Height: 2 in.
Extra Shipping Charge: No
Drop Ship: No