The telco input channel controls the connection to a telephone balance unit (or hybrid). It has one balanced line level mono input on Neutrik XLR, and one balanced line level cleanfeed output to return to the hybrid. Selecting the CUE/PFL & T/B button routes the pre-fader input signal to the monitoring system where the signal can be heard via headphones and/or loudspeakers. In addition, talkback is automatically routed back to the caller via the cleanfeed system. This enables the presenter, or technical operator, to communicate with the caller prior to putting the caller live to air. PFL can be automatically disabled when the fader is opened. There is a logic remote output to place the hybrid “on hold” by using the LINE HOLD button. The remote output on the 9 way D-type plug is fed from an NPN opto-isolator and it can be made momentary or latching.
Product Features
Balanced mono line input.
Balanced line level cleanfeed output.
CUE/PFL & T/B Button with talkback to cleanfeed routing.
Optional fader-activated PFL cancellation.
'Line Hold' button with logic remote output
PGM or AUD bus to cleanfeed routing.
PGM-activated true cleanfeed bus routing.
Dual-band EQ: +/-10dB at 100Hz and 6.5kHz.
EQ in/out switching and EQ active indicator.
PAN/BAL control.
Input level Trim control.
100mm VCA fader.
Gold plated Neutrik XLR connectors .
Typical Applications
Community, student, hospital and small scale radio broadcast mixer, secondary or backup on-air mixer.
Product Category
Mix Consoles
Technical Specifications
Input/Output Impedances
Mic Input: > 1k5Ω electronically balanced
Mono Line Input: > 20kΩ electronically balanced
Stereo Line Input: > 20kΩ electronically balanced
PGM & AUD Output: < 75Ω electronically balanced
Mono Output: < 75Ω electronically balanced
Monitor Outputs: < 75Ω unbalanced
AES Input/Output: 110Ω
S/PDIF Input/Output: 75Ω
BNC Wordclock input: 50Ω
Input/Output Gain Range
Mic Input: Preset pot +13dB to +66dB ref -50dBu, TRIM pot ±12dB
Mono Line Input: Preset pot -6dB to +10dB ref 0dBu, TRIM pot ±12dB
Stereo Line Input: Preset pot -6dB to +10dB ref 0dBu, TRIM pot ±12dB
Telco Input: Preset pot -6dB to +10dB ref 0dBu, TRIM pot ±12dB
Telco Output: Preset pot -6dB to +4dB ref 0dBu
Mix Minus Input: Preset pot -6dB to +10dB ref 0dBu, TRIM pot ±12dB
Mix Minus Output: Preset pot -3dB to +3dB ref 0dBu
Digital Input: 0dBFS = +12dBu on input; TRIM pot ±12dB allowing 0dBu to +24dBu
Digital Output: 0dBFS = +18dBu
Frequency Response
Mic Input: 40Hz to 20kHz, -1dB,+0dB (-3dB at 130Hz with HPF in)
Line Inputs: 20Hz to 20kHz, - 0.5dB,+0dB
RIAA Input: 30Hz to 16kHz ±1.5dB RIAA equalised
Noise (20Hz to 20kHz)
Mic Input E.I.N.: -129dB with 150Ω source
Stereo Inputs (fader down, no routing): -89dB ref 0dB
Stereo Inputs (fader down, one channel routed): -89dB
Stereo Inputs (unity gain, no routing): -89dB
Stereo Inputs (unity gain, one channel routed): -86dB
Stereo Inputs (unity gain, two channels routed): -83dB
