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Bose FreeSpace 3 Surface-Mount Bass Module Black | 40146
Designed to provide surface-mount bass augmentation for new and existing background music systems. Features one 5.25-inch (133 mm) woofer that delivers deep bass down to 40 Hz without audible distortion. For indoor applications only.

FEATURES
Low-frequency loudspeaker featuring one 5.25-inch (133 mm) woofer that delivers deep, non-localized bass down to 40 Hz without audible distortion. For surface-mount applications.
Speaker technology filters out audible distortion to deliver non-localized bass
Designed to work with the FreeSpace 3 surface and flush 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
Selectable 70/100V or low impedance
Applications
Designed for a wide range of applications, including:
Retail stores
Restaurants and bars
Lobbies and conference rooms
Warranty Period
5 years
Included in Packaging
(1) installation guide
(1) mounting bracket
(1) wiring panel cover
(1) FreeSpace 3 Module
Mechanical Diagrams

| Feature | Description |
|---|---|
| EN 54-24 Certified | No |
| Colors | Black, White |
| Enclosure Material | High-density wood composite with solid color PVC laminate |
| Environmental | Indoor only |
| Suspension/Mounting | Wall-mount bracket, preattached |
| Product Dimensions (H×W×D) | 14.0 in × 7.5 in × 13.6 in (356 mm × 191 mm × 345 mm) / Width with bracket: 8.8 in (222 mm) |
| Net Weight | 17.5 lb (7.9 kg) |
| Shipping Weight | 25.0 lb (11.3 kg) |
| Frequency Range (-10 dB) | 40 Hz – 315 Hz |
| Coverage (Horizontal) | Omnidirectional below 200 Hz |
| Coverage (Vertical) | Omnidirectional below 200 Hz |
| Calculated Max SPL @ 1 m | Per channel: 96 dB continuous, 102 dB peak / Mono: 102 dB continuous, 108 dB peak |
| Nominal Impedance | 5 Ω mono direct (transformer bypassed) |
| Power Handling (Continuous) | 70/100 V: 200 W mono / Low impedance: 50 W per channel stereo or 100 W mono |
| Power Handling (Peak) | 70/100 V: 800 W peak mono / Low impedance: 200 W peak per channel stereo or 400 W peak mono |
| Recommended Signal Processing | Recommended |
| Sensitivity (SPL/1 W @ 1 m) | Per channel: 76 dB / Mono: 79 dB |
| Transformer Taps (100V) | 25 W, 50 W, 100 W, 200 W |
| Transformer Taps (70V) | 25 W, 50 W, 100 W, 200 W |
| Driver Protection | Recommended high-pass filter 40 Hz high-pass filter |
| Low-Frequency Driver | 5.25 in (133 mm) dual-voice-coil low-frequency driver |
| Description | Downloads |
|---|---|
| Bose FreeSpace 3 Surface-Mount Bass Module Black | 40146 DataSheet | Downloads |
| Bose FreeSpace 3 Surface-Mount Bass Module Black | 40146 Installation Guide | Downloads |
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