Senses Microphone up to 610m

AVM 1 

Overview

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 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.

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

General Installation Guidelines

Before installing the AVM-1 sense microphone, please note the following: 

Do not install the AVM-1 in a ceiling or ceiling tile that is thicker than 2.5 centimeters (1 inch). 

Avoid placing the AVM-1 near vents, HVAC equipment, or other machinery that could produce vibrations or sounds that would be detected by the microphone.

We recommend using wire no longer than 610 meters (2,000 feet) to connect the AVM-1 to the Bose CSP. Use shielded twisted-pair plenum wire (AWG 28 to AWG 20 [0.08 mm2 to 0.52 mm2]).

We recommend installing the AVM-1 in a ceiling directly above the center of the area where ambient noise is likely to occur. If the ceiling is less than 3.6 meters (12 feet) high, install the AVM-1 in a wall rather than the ceiling. 

Place the AVM-1 at least 1.8 meters (6 feet) from loudspeakers and at or above the height of the highest loudspeaker. Make sure other loudspeakers are not pointed directly at the AVM-1. This will reduce the possibility of the microphone detecting sounds that are not part of the ambient noise. 

We recommend installing the AVM-1 in a ceiling, but if you must install the AVM-1 in a wall, place the AVM-1 at least 3 meters (10 feet) above the ground and no higher than 7.3 meters (24 feet). In addition, place the AVM-1 at least 0.9 meters (3 feet) away from any boundary or structure (ceiling, HVAC materials, pipes, etc.).