Bose Professional AVM-1 Sense Microphone

Bose Professional AVM-1 is a sense microphone designed to provide ambient noise reference for commercial sound systems. It enables automatic level compensation by supplying continuous room noise data to compatible Bose Professional sound processors. This makes it ideal for environments where consistent audio levels are required despite changing ambient conditions.

The microphone outputs an analog balanced signal and operates using phantom power from the connected processor. Its omnidirectional condenser capsule captures ambient sound evenly across the room. The design supports long cable runs for flexible placement within distributed audio systems.

The AVM-1 supports automated system performance by enabling AutoVolume processing in compatible processors. Its low-profile form factor allows discreet installation in ceiling spaces. The microphone is intended for permanent commercial installations requiring adaptive sound level control.

Key Features

• Ambient noise sensing microphone for AutoVolume system control
• Discreet ceiling-mounted design for clean commercial installations
• Omnidirectional condenser capsule for accurate room monitoring
• Balanced analog output for stable signal transmission
• Phantom power operation for integration with DSP systems
• Long-distance installation capability up to 2000 ft from processor
• Spring clip mounting system for secure ceiling installation
• Condensation protection for above-ceiling reliability

Technical Specifications

• General
  • Product Model: AVM-1
  • Product Type: Sense microphone (ambient noise sensor)
  • Application: AutoVolume control, ambient noise monitoring
  • Compatibility: Bose Professional CSP-428, Bose Professional CSP-1248
• Microphone
  • Microphone Type: Omnidirectional electret condenser
  • Polar Pattern: Omnidirectional
• Performance
  • Frequency Response: 100 Hz – 6 kHz (±4 dB)
  • Maximum Input Level: 115 dB SPL
  • THD+N: < 1% at 1 kHz
• Electrical
  • Power Requirement: 48V phantom power (10 mA typical)
  • Output: 1 balanced microphone output
  • Connector: 3-terminal bare-wire (3.5 mm)
• Physical
  • Dimensions (H × W × D): 1.7 × 2.8 × 3.9 in
  • Weight: 0.14 lb
  • Mounting: Ceiling mount with spring clips
  • Color: White
  • Operating Temperature: 32°F to 104°F (0°C to 40°C)
• Installation & Features
  • Mount Type: Flush ceiling installation
  • Installation Range: Up to 2000 ft from processor
  • Protection: Condensation cover for above-ceiling environments

Installation & Use Case

The AVM-1 is designed for commercial environments where ambient noise levels change throughout the day and automatic system adjustment is required.

• Retail stores
• Restaurants and cafés
• Conference rooms
• Offices
• Hospitality environments

Package Contents

• Bose AVM-1 Sense Microphone