MGT 11 Octopus — Multichannel Digital Audio Wired System
MGT 11 Octopus is a professional multichannel digital audio wired system designed for ambient room monitoring and structured surveillance deployments where stable wired microphone acquisition and centralised audio handling are required. The system is built around a master unit and multiple remote microphone devices connected via twisted-pair cabling.
In the standard configuration, the platform comprises the MGT 11-RX master unit and four MGT 11-TX microphone devices. Digital audio is sampled at 16-bit / 16 kHz without compression, helping preserve sound quality while supporting discreet wired installations over extended cable runs.
- Multichannel wired audio system for room monitoring and ambient surveillance.
- Master unit with up to four remote microphone devices.
- 16-bit / 16 kHz digital audio sampling without compression.
- Twisted-pair transmission architecture for extended wired deployment.
- USB recording support and encryption-oriented workflow.
- Two microphones per transmitter, remotely selectable.
Highlights
- Very compact system design suited to discreet technical installations.
- Low-noise audio path engineered to preserve intelligibility in ambient monitoring tasks.
- High-quality Knowles MEMS microphone implementation.
- Communication tests carried out over basic telephone twisted-pair cable up to 400 m in open-space conditions (tested at 18 V, only 1 TX).
- AGC support helps maintain usable signal levels across changing conditions.
Technical overview
Transmission system
| Carrier | Digital balanced Manchester mode (zero return) |
|---|---|
| Transmit amplitude | + / - 5 Vpp |
| Receiver sensitivity | + / - 300 mVpp |
| Reference impedance | 100 Ohm |
| Wire length | Max. 400 m (tested at 18 V only, 1 TX) |
Audio
| Sample frequency | 16 kHz |
|---|---|
| Sample bit | 16 |
| Audio bandwidth | 20 Hz to 8 kHz |
| Microphone gain | 0 - 40 dB |
| Microphone AGC | Yes |
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Procurement, compliance & support
Supply is restricted to qualified government, defence and law-enforcement customers or accredited partners. End-use and export controls may apply; local regulations must be observed. Confidential product information, integration guidance and operator support are available on request.