Description
The GS-CU008 is a popular general purpose mic and headphone interface. Its flexibility has resulted in various custom designs with multiple mic inputs, or multiple monitoring inputs. These options can interface with wireless systems, or be used for audio description.
Inputs
The front panel input is transformer balanced at microphone level with a selectable 48V phantom power switch. A small pot is on the front panel for adjusting gain control, and the mic on/off switch can also be set to act as a cough switch. For optimising the voice input, a band pass filter is used.
Outputs/Talkback
There is a single transformer balanced programme output. The output level is configurable by a 3 position selector switch which would typically be used with the compressor / limiter active above 0dB. The limiter can also be turned off for a 0dB output. If the compressor / limiter is not required, but more headroom is, the user can select a -10dB output without compressor/limiter.
Monitoring
There is a single audio input with a variable pot for headphone monitoring for a single commentator, with a control for adjusting sidetone level in the headphones. Both pots have left/both/right headphone switching, facilitating adjustment of any input to either side of the headphones. The operator has a single 6.35mm headphone socket. There is a 7 segment LED PPM meter.
Power
Internal switch mode power supply 90-240 VAC. An external power input is also provided on a 4 pin XLR 10-18 VDC.
Specification
| Microphone Inputs General | |
| QTY Mic inputs on XLR | 1 |
| Mic ON switch configuration | User Programmable |
| Microphone Inputs Technical | |
| Mic input gain range | 42 to 66dB |
| Phantom power input gain range | 31 to 56dB |
| Headroom (No dB above line up before clipping) | 39dB |
| Input Impedance | 1K5 |
| Compressor/ Limiter (dB IN : dB OUT) | Selectable complex ratio 2:1 to 5:1 |
| Phantom Power Voltage | 48V |
| Band Pass Filter | 30Hz & 20kHz |
| Programme Outputs General | |
| QTY direct mic outputs | 1 |
| Programme Outputs Technical | |
| Output Balancing | Transformer |
| Output Impedance | 50 Ohms |
| Equivalent Input Noise (22‐22kHz RMS gain @ max) input terminated 300 ohms | 121dBu |
| Maximum output level | +18dBu (limiter off) +12.5dBu(limiter on) |
| THD + NOISE (50Hz to 20kHz) @ +8dBu | <0.2% |
| Selectable ‐20dB output level (provides extra 20 dB headroom) | ‐10dB out switch |
| Talkbalk Outputs | |
| QTY talkback outputs | Depending on model ordered |
| Output Balancing | Transformer |
| Talkback switch operation | User Programmable |
| Headphone Circuit | |
| QTY headphone amplifiers | 1 |
| QTY 6.35mm outputs | 1 |
| QTY external inputs | 2 |
| Input balancing | Electronic |
| Input impedance | =>15kohms |
| Sidetone own mic to own headphone | Front Panel Full Size Pot |
| Gain range of headphone pots (with end stops on) | ‐20 to +10dBu |
| Endstops (to prevent complete attenuation of signal) | Internal solder links to turn endstop off |
| Headphone impedance | 200 – 2000 Ohms |
| Left/Both/Right source routing | Yes |
| Max output level (into 600 Ohms) | +18dB |
| PPM | |
| QTY LEDS | 8 |
| dB per LED + (nominal range) | 4 (‐16 to +12) |
| Connectivity | |
| GPIO | Optional |
| Physical | |
| Size (W x D x H) | 160 x 222 x 92 then + 31mm per extra TB |
| Weight | 1.4Kg then + 0.25Kg per extra TB |
| AC mains voltage range | 100 – 240VAC 50/60Hz |
| Other Power Input | 10 – 18V 4 pin XLR |
Similar Products
GS-CU008C