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Regular price $351.20 USD
Regular price $374.95 USD Sale price $351.20 USD
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Bose Professional FreeSpace 3 Series II Acoustimass Subwoofer Module (White)

Bose Professional FreeSpace 3 II Overview

System integrators looking for a flush-mount subwoofer should check out the white Bose Professional FreeSpace 3 Series II Acoustimass Module, a high-performance, low-frequency loudspeaker that is designed for small- to medium-sized installed applications such as retail stores, restaurants, bars, lobbies, and conference rooms.

The FreeSpace 3 Acoustimass module provides deep, non-localized bass support down to 40 Hz without audible distortion. When paired with the separately sold FreeSpace 3 flush-mount satellite loudspeaker, the Acoustimass bass module forms a full-range system and allows for a modular deployment with 2 or 4 satellites being used per subwoofer. Mix and match with surface-mount speakers to work with your room's decors and layouts.


  • Low-frequency loudspeaker featuring one 5.25" woofer that delivers deep, non-localized bass support down to 40 Hz without audible distortion. For flush, ceiling, pendant, and wall-mount applications
  • Acoustimass speaker technology filters out audible distortion to deliver non-localized bass
  • Designed to work with the FreeSpace 3 flush and surface satellite speakers, or existing systems where additional bass reinforcement is desired
  • Module design allows parallel connection of multiple bass modules and can accommodate two or four FreeSpace 3 satellites per bass module
  • Plenum rated for use in air handling spaces (with optional plenum cover)
  • Selectable 70/100V or low impedance with transformer tap adjustment under speaker grille

Key Specs



Number of Included Speakers


Speaker Configuration


Power Handling

At 70 V / At 100 V:
200 W RMS
800 W Peak
At Low-Z:
50 W RMS
200 W Peak

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LF Driver

1 x 5.25" / 133.35 mm

Frequency Range

40 Hz to 315 Hz -10 dB








Cutout Depth

7.4" / 18.8 cm

Mount Surface Thickness

Up to 1.8" / 4.6 cm

Construction Material



15.4 x 7.4" / 39.1 x 18.8 cm


14 lb / 6.4 kg

Packaging Info

Package Weight

21.275 lb

Box Dimensions (LxWxH)

17.6 x 17.6 x 11.2"

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