Each RM-MP12 input may be individually calibrated for unbalanced consumer, balanced professional, 8 Ohmspeaker line or constant voltagespeaker lines. There is a variable intensity LED on the front panel to show audio presence for each input. If the RM-MP12 is set to the interlocking operating mode, front-panel pushbuttons select one of the twelve inputs to feed the calibrated meter, front-panel speaker (or external speaker if connected) and headphonejack. In the mixing mode, the buttons allow the use to mix multiple sources. The front-panel volume knob controls the audiolevel of the front-panel headphonejack, front-panel speaker, external speaker output and variable line level (+4 dBu) rear-panel output. A separate fixed line-level output is provided.
Twelve Individually Selectable Audio Inputs
Selectable Operating MODE Provides Interlocking Source Selection or MixingMultiple Sources
LED Above Each Button to Show Selected Source
VU Ballistic LED Above the Button for Each Input
Calibrated Front-Panel Meter Display
Front-Panel Speaker and HeadphoneJack
Front-Panel VCA Control for Headphone and Speaker Output Levels
Internal 4.5 W RMSPower Amplifier and Speaker
Audio Inputs and Outputs on Detachable Terminal Blocks
Inputs (12): +4 dBu, 25 V, 70.7 V, 100 V (set by rear-panel switches)
Input Level: -11 dBu to +9 dBu (+4 dBu input) 25 V, 70.7 V, 100 V (calibrated with gaintrim set fully counter-clockwise)
Headroom: > 18 dB (above calibrated input level)
Gain: 0 dB to 20 dB (Adjustable for speaker-level input, 25-turn trimpotentiometer)
-5 dB to 15 dB (+4 dBu input)
Frequency Response: 10 Hz to 20 kHz (+/-0.25 dB)
THD+N: < 0.010% (20 Hz to 20 kHz)
Intermodulation Distortion: < 0.025% (20 Hz to 20 kHz)
Channel to Channel Crosstalk: < -80dB (10Hz to 20 kHz)
Residual Noise: < -80 dB (Channel ON; referred to +4 dBu)
OFF Attenuation: > 80 dB (10 Hz to 20 kHz)
Indicators per Channel (2): Red channel active LED above button; Variable intensity audiolevelLED for each input (minimum intensity at -15 dB, maximum intensity at 0 dB)
CMRR: > 75 dB (50 to 120 Hz)
Outputs (4): 150 Ohms, +4 dBu fixed level (balanced or unbalanced via plug-in terminal block)
Radio Design Labs - RDL RM-MP12A Audio Monitor Panel - 12 Line or Speaker Inputs
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