Contemporary Research SMG-40 Sound Masking Generator with 40W Power Amplifier

SMG-40 - Overview

• Features:

  • Employs shaped pink noise optimized for speech privacy with level adjustment and bass, treble tone controls
  • Supports 3.5mm stereo Music input with independent level control
  • Amplifier output 40W RMS
  • Provides 3-pin captive-screw terminal for 25V and 4Ω/8Ω amplifier outputs
  • Dual parallel RJ45 25V amplifier outputs compatible with Cambridge Qt Emitters
  • 4Ω/8Ω output may be used with 70V step-up transformer
  • Audio Mute port operates with contact closure to mute amplifier
  • Short circuit, overload, and thermal protection
  • Metal enclosure with flanges for surface mounting
   

• Specifications:

  Audio
  • Amplifier: High Efficiency Class D
  • Music Input: 3.5mm TRS stereo unbalanced, 5KΩ, 1.4V RMS max, internally summed to mono
  • Noise Generator: Shaped pink noise optimized for speech privacy
  • Output: Transformer isolated, 40W RMS at 4Ω or 25V
  • Gain: 20dB max
    
    Control
  • Mute: 2-pin captive screw terminal for contact closure
  • Front Panel:
    - Green LED power indicator
    - Bass, Treble, masking tone controls
    - Music level control
    - Masking level control
    
    Power
  • Power In: 2-pin captive screw terminal. 24V DC typical, 2A max
    
    Physical
  • Enclosure: All Aluminum enclosure with durable black powder coat paint, flanges for surface mounting
  • Dimensions (LxWxH): 3.875" x 5.5" x 2.375" (98mm x 140mm x 60mm)
  • Weight: 1lb (454g)
   

• Item Includes:

  • 1x PS24-2.5 Power Supply (5406-001), 24V DC, 2.5A maximum
   

• Warranty:

  • 3 Year LImited Warranty