Sonifex RM-4C8 Reference Monitor, 4 LED Meters, 8 Channel Inputs & Dual Source Selectors










- Stock: 2
- Code: BS18196
- Model: RM-4C8
The RM-4C8 offers the same functionality as the RM-2S4 but with an additional source selector so that any of the 4 channels in the selected group, or bank, can be monitored independently on left and right speakers. Also, 4 meters are provided so that every channel in the selected group, or bank, can be visually monitored. All audio channels in an HD-SDI signal can be monitored using the optional RM-HD1 card and Dolby encoded audio signals can be monitored using the RM-HDE1, RM-E1B or RM-E1X expansion cards. The audio inputs on the RM-4C8 are autosensing, for digital AES/EBU using the left input XLR, or both XLRs for analogue inputs.
The Sonifex RM-4C8 inputs can be used in any combination of analogue or digital. With full remote control via GPI, RS232 or USB, a 5 band parametric equaliser, 6 front panel modifier buttons and the ability to take the optional HD-SDI expansion cards, the RM-4C8 is a flexible and versatile monitoring solution. The same high level of care has been taken in the design of the RM-4C8 as in the RM2S4 to ensure that it’s the best sounding 1U rack-mount audio monitor that you’ll hear.
Technical Details
Inputs
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Audio Inputs | 8 analogue or AES/ EBU digital | |
channels (autoselecting) | ||
Max Level | +18dBu (analogue)/0dBFS (digital) | |
(0dB Input Gain): | ||
CMRR: | >60dB typical | |
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switchable) | ||
AES/EBU | 32 to 192kHz, converted internally | |
Sample Rate: | to 48kHz | |
Input Gain: | 0, +6, +12 or +18dB digital | |
gain (switchable) | ||
Selection: | 2 x Front panel rotary controls with | |
indicator LEDs | ||
Line Level Outputs | ||
Audio Outputs: | 1 x stereo analogue or AES/EBU | |
digital (switchable) | ||
Gain re | Unity or variable, following volume | |
Selected Input: | control (switchable) | |
Maximum | +18dBu (analogue)/0dBFS (digital) | |
Output Level: | ||
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| |
Impedance: | (digital) | |
AES/EBU | 48kHz | |
Sample Rate: | ||
Distortion: | <0.02% (1kHz, +8dBu output) | |
Noise: | -84dB RMS, unity gain ref | |
+8dBu output | ||
Frequency | 20Hz-20kHz +0/-0.5dB | |
Response: | ||
Crosstalk | Analogue I/O, ref 0dBu | |
1kHz input: | <-90dB | |
10kHz input: | <-85dB | |
Audio Modifiers
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Modifier | Illuminated front panel |
Selection: | pushbuttons |
DIM: | Reduces speaker audio level by 10dB |
CUT L & CUT R: | Mutes left/right speaker audio |
MONO: | Combines left and right audio inputs |
PHASE INVERT: | Inverts phase of right audio input |
M+S: | Converts stereo input to Middle (sum) |
and Side (difference) signals | |
User-Variable Equalisation | |
Type: | Parametric |
Bands: | Five |
Centre Frequency: 200Hz to 18kHz | |
Bandwidth: | 0.25 to 2 octaves |
Boost/Cut: | ±12dB |
Programming: | Via USB/serial control port |
Amplifier/Loudspeakers | |
Configuration: | Three-way with stereo mid/ |
high-frequency drivers & mono | |
low-frequency driver | |
Power Output: | 2 x 5W (HF) + 20W (LF) with |
protective limiter | |
Crossover: | 500Hz (3rd order Butterworth) |




























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