Desk-top Commentator Unit
The CMU21 is a compact, desk-top unit providing high-quality programme outputs of two commentators' microphones and an interview microphone. Communications are provided by dual switched talkback outputs of the commentary microphones, with headphone monitoring of four external inputs.
- Provision for two commentators each to have a microphone and split headphones.
- Microphone or line-level input for interview microphone or tape playback.
- Two “Lazy” talkback outputs available to both commentators, using on-air mic.
- Left and right headphones monitoring of four external inputs and all microphone inputs.
- Mic. gain adjustable between 20dB and 80dB. Phantom power 6,12,24 and 48v selectable to all mic. inputs.
- Dual outputs of the mic. mix signal with adjustable limiter, in addition to three direct mic. outputs.
- LED PPM monitors level of microphone mix signal.
- Powered from 86V to 264V AC mains input or dual 12V battery.
| Microphone Inputs | |
| Inputs | Transformerless balanced on XLR3F |
| Phantom Power Voltage | Adjustable 6-18V |
| Input Noise Voltage | -120dBU, 20Hz to 20kHz |
| Bandwidth (-3dB) | 20Hz to 30kHz |
| Gain Range | Switched 35/65dB with ±15dB fine gain control |
| Programme Outputs | |
| Outputs | Transformerless balanced 50 ohms on XLR3M |
| Peak Output Level | +26dBU. at clipping |
| T.H.D. | <0.01% |
| Monitor Inputs | |
| Inputs | Transformer-balanced 10k ohms on XLR3F |
| Peak Input Level | +14dBU |
| Talkback & Mix Outputs | |
| Outputs | Transformer-balanced 100 ohms output on XLR3M |
| Peak Output Level | +20dBU (f > 100Hz) at clipping |
| Level Meter | |
| 10-LED PPM -18 to +9dBU in 3dB steps with peak-hold above 0dBU | |
| Power Inputs | |
| Mains | 100V to 240V AC, 10W on 1.5m flying lead with IEC connector |
| Battery | 12V + 12V DC, 300mA on dual battery plugs. Grounding terminal |
| Physical | |
| Dimensions | W330mm H75mm D185mm |
| Weight | 3.4kg |
| Finish | Light grey |
