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Lowell SMG-2

Lowell SMG-2

Lowell SMG-2
Item# SMG-2

Product Description


SMG-2: Sound Masking Generator


The SMG-2 sound masking generator produces an analog pink noise signal that is fed to sound masking amplifiers (ordered separately) in order to produce random low-level background noise to mask ambient noise and aid conversational privacy.

The PRE-EQ OUTPUT has a flat spectrum that can be used as an input to equalizers that feed power amplifiers for masking systems that require precise equalization.

The POST-EQ OUTPUT is adjusted by bass, mid and treble controls, and can be used for less demanding applications that utilize basic spectrum shaping.



  • Outputs: Pre-EQ hi-Z line level (~500mV); Post-EQ hi-Z line level (~500mV); Pink noise (equal energy per octave); Adjustable post-EQ
  • Connections: RCA phono jacks
  • Controls: Bass, mid, treble, and volume allow for basic noise spectrum shaping without an external equalizer
  • Chassis: 12.2 in. x 1.5 in. x 6 in. steel chassis with black powder epoxy finish (19 in. 1.75 in. x 6 in. with brackets set for rackmount use)
  • Power Requirements: 12VDC 1A. Includes power supply with universal input (100-240VAC) and 12VDC @ 1A output.
  • Mounting Aids: Universal mounting brackets for rack, shelf, wall, or under counter use.


  • Made in the U.S.A. with global components


  • The sound masking generator shall be Lowell model SMG-2, which shall produce an analog pink noise signal and have pre-EQ and post-EQ hi-Z line level outputs. Controls shall include level, bass, mid, and treble. The steel chassis (12.2" x 1.5" x 6") shall have a black powder epoxy finish and include universal mounting brackets for wall, shelf, rack or under counter use, which will slightly increase dimensions. It shall also include a power supply with universal input (100–240VAC) and 12VDC @ 1A output.