The RB-MTV1 contribution voiceover monitor is a 1U rack-mount designed to be used in voice-over booths, news booths, commentary locations, for continuity announcements and for any other similar applications where voice needs to be added to programme content and then monitored. Programme feeds, auxiliary feeds and a talkback feed can be taken and monitored. The RB-MTV1 has four inputs and two outputs. It has a mono microphone input on XLR with switched coarse gain and variable fine gain control using a multi-turn preset potentiometer to give an overall gain range from +20dB to +80dB. There is also a switched LF rumble filter, switched +48V phantom power and switched level limiting control. A rear-panel multi-turn preset potentiometer allows adjustment of the threshold at which the limiter begins to operate, from -8dBu to +26dBu. There is an indication of the limiter activity using a blue LED and the microphone level is monitored by a simple 5 LED meter. The meter can be configured to either show the MIC signal activity in normal operation, i.e. when TALK is pressed the meter is off, or the meters can permanently show the MIC activity even when the TALK button is on or the MIC button is off.
Product Features
Wide mic input gain range.
High pass filter, +48V phantom power.
Switchable level limiter with threshold control.
Mic level metering.
'Lazy' talkback input/output & button.
Two balanced / unbalanced stereo inputs ('PGM' and 'CUE') with +10dB pad.
Front panel headphone output with a volume control for each input.
Headphone monitoring configured via DIPswitches.
Two mic/line outputs.
Remote control of MIC and TALK buttons.
Typical Applications
In voice-over booths, news booths, commentary locations, for continuity announcements and for any other similar applications where voice needs to be added to programme content and then monitored, with talkback.
Product Category
Contribution Voiceover
Technical Specifications
Audio Specification
Input Impedance: 2kΩ nominal balanced MIC input >20kΩ all other inputs.
Maximum Input Level: -10dBu MIC input
Maximum Input Level: +26dBu TALK, CUE & PGM inputs
Mic Gain Range: Adjustable +20dB to +80dB
E.I.N.: 130dB
Common Mode Rejection: >60dB typically
Low Frequency Roll-Off: 125Hz @ 6dB/octave
Distortion: 0.01% THD @ 1kHz, ref +8dBu output
Phantom Power: 48V
Limiter Threshold: Adjustable +8dBu to +28dBu
Output Impedance: <50Ω
Maximum Output Level: +26dBu balanced outputs
Headphone Output Level: Drives 150mW into 32Ω to 600Ω headphones
Frequency Response: 20Hz to 20KHz ±0.1dB (ref 1KHz)
Rear Panel Connections
Mic Input: 1 x XLR 3 pin female (Balanced)
TALKBACK Input: 1 x XLR 3 pin female (Balanced)
CUE Inputs: 2 x XLR 3 pin female (Balanced)
PGM Inputs: 2 x XLR 3 pin female (Balanced)
Output 1: 1 x XLR 3 pin male (Balanced)
Output 2: 1 x XLR 3 pin male (Balanced)
TALK (LAZY) Output: 1 x XLR 3 pin male (Balanced)
Headphone Outputs: 2 x ¼” (6.35mm) A-gauge 3-pole stereo jack sockets
Remote I/O Port: 9-way ‘D’-type socket
Mains Input: Filtered IEC, 110V-120V, or 220-240V switchable, fused, 9W maximum
Fuse Rating: Anti-surge fuse 100mA 20 x 5mm (230VAC)
Fuse Rating: Anti-surge fuse 250mA 20 x 5mm (115VAC)
Equipment Type
RB-MTV1: Contribution Voiceover Unit With Talkback
Physical Specification
Dimensions (Raw): 48cm (W) x 10.8cm (D) x 4.3cm (H)
Dimensions (Raw): 19” (W) x 4.3” (D) x 1.7” (H) (1U)
Dimensions (Boxed): 58.5cm (W) x 22.5cm (D) x 7cm (H)
