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Surface-Mounted Sound Masking Loudspeaker

The SMS-SURF is a 25-volt system loudspeaker designed to generate the optimum masking sound for surface-mounted applications. This sound masking speaker is equipped with a 6.5″ (16.5 cm) driver installed in a sealed enclosure.

The SMS-SURF sound masking speaker must be installed on the surface of drywall ceilings or on ceiling tiles through a 8.6″ (19.3 cm) diameter hole. Four different power taps (½W, 1W, 2W and 4W) controlled with a rotary switch allows quick adjustments of the output level. ROHS compliant.


  • Power: 10 watts
  • Line Voltage: 25V
  • Sensitivity: 88 dB
  • Material: ABS Fire Proof
  • Frequency Response: 100-8,000 Hz
  • Connectors: Spring Loaded Terminals
  • Color: White
  • Diameter: 8.75″ (222 mm)
  • Height: 5.3″ (125 mm)
  • Weight: 4 lbs (1.8 kg)
  • Shipping Weight: 4.4 lbs (2 kg)

Product Testing & Information

  • Product Data Sheet
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Surface-Mounted Speaker
Surface-Mounted Speaker
Surface Mounted Speaker Frequency Response
Surface Mounted Speaker Polar Response