AVM-1 sense microphone
The AVM-1 sense microphone mounts discreetly into ceilings and provides an analog output over a balanced audio connection. Designed for use with AutoVolume compensation, as featured in select Bose Professional sound processors, the microphone delivers a continuous ambient room noise reference. This allows the AutoVolume algorithm to adjust output zone levels automatically based on activity in the room.
Bose AVM-1 Sense Microphone Technical Specification
| Category | Parameter | Detail |
| Function | Type | Ambient Noise Sensing Microphone |
| Compatible Ecosystem | ControlSpace CSP-428, CSP-1248 | |
| Microphone | Technology | Omnidirectional Electret Condenser |
| Frequency Response | 100 Hz – 6 kHz (±4 dB) | |
| THD+N | < 1% at 1 kHz (94 dB SPL) | |
| Max Input Level | 115 dB at 1 kHz | |
| Audio Outputs | Channels | 1 Balanced, Mic level |
| Connectors | (1) Fixed 3-terminal bare-wire (3.5 mm) | |
| Electrical | Phantom Power | 48 VDC, 10 mA (via ground terminal) |
| Physical | Dimensions (H×W) | 43 mm × 70 mm (Face) × 99 mm (Depth) |
| Mounting | Spring-loaded clips (Ceiling < 25 mm thick) | |
| Color | White | |
| Net Weight | 0.06 kg (0.14 lb) |
FEATURES
- Discreet, flush-mounted design blends seamlessly into common ceiling surfaces
- Omnidirectional condenser microphone capsule operates on phantom power and can be located up to 610 meters (2,000 feet) away from the sound processor
- Spring clips help make installation easy while keeping the microphone firmly in place
- Condensation cover protects wire terminals from moisture collection and ensures sustained operation in above-ceiling mounting locations