Bose FreeSpace 3 Series II Acoustimass bass module



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Bose FreeSpace 3 Series II Acoustimass bass module

Bose FreeSpace 3 Series II Acoustimass bass module (Product Code 843090-0110 black, 843090-0210 white)

Bose FreeSpace 3 Series II Acoustimass bass module designed to provide flush-mount bass augmentation for new and existing background music systems. Features one 5.25″ (133 mm) woofer that delivers deep bass down to 40 Hz without audible distortion.

For indoor applications only.

Low-frequency loudspeaker featuring one 5.25″ (133 mm) 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

Architects’ and Engineers’ Specifications

The loudspeaker system shall be a 200 watt ported loudspeaker system that includes one Acoustimass® module and two or four satellite speakers. It shall be capable of producing 93 dB SPL average in a 45,000 ft3 room with an RT60 of 1 second in a range of 50 Hz to 16 kHz (±3 dB).

The module shall have one 5.25″ (133 mm) dual voice coil low frequency driver. The module shall have an input impedance of 6 ohms (5 ohms for surface-mount module) for direct connection to un-equalized low impedance amplifier sources. The system shall be configured for use with either a 70/100 V input or a low impedance input. The transformer shall offer multiple taps of 25 W, 50 W, 100 W, and 200 W.

Each satellite speaker shall have one 2.5″ (64 mm) full-range driver. The nominal average dispersion shall be 170° at –6 dB.

The input connectors shall consist of multi-position screw-type barriers on the flush-mount Acoustimass module, a spring-type barrier connector for the 70/100 V inputs and a screw-type barrier strip for direct 4-8 ohm input on the surface-mount Acoustimass module, a two position guillotine connector on the flush-mount satellite, and a two position screw-type barrier on the surfacemount satellite. Wire jumpers for transformer settings shall be provided. Removable covers shall shield all bass module input and jumper connections.

The flush-mount Acoustimass module shall have dimensions of 15.4″ (391 mm) outer flange diameter; 14.25″ (361 mm) ceiling hole diameter; and 7.5″ (190 mm) height to top of housing. It shall weigh 14 lb (6.36 kg). The surface-mount Acoustimass module shall have dimensions of 14.0″ H x 8.7″ W (w/bracket) x 13.6″ D (356 mm x 221 mm x 345 mm) and shall weigh 17.5 lb (7.9 kg) with attached mounting bracket. Each flush-mount satellite speaker shall measure 6.2″ (157 mm) outer flange diameter; 5.0″ (127 mm) ceiling hole diameter; and 5.0″ (127 mm) to top of housing. It shall weigh 1.9 lb (0.9 kg). Each surface-mount satellite speaker shall measure 3.0″ H x 3.0″ W x 4.0″ D (77 mm x 77 mm x 102 mm) and shall weigh 1.75 lb (0.8 kg).

The flush-mount Acoustimass module and flush-mount satellite enclosures shall be composed of PC/ABS with an expanded metal grille and shall meet plenum ratings when used with a plenum cover. The surface-mount Acoustimass enclosure shall be composed of high-density wood composite with solid color PVC laminate, black or white. The surface-mount satellite shall have a cloth grille and black or white polymer finish.

The loudspeaker shall be the Bose® FreeSpace® 3 loudspeaker system.

Technical Summary

Frequency Response (+/-3 dB)
50 Hz – 16 kHz (System)
210 Hz – 16 kHz (Satellites)

Frequency Range (-10 dB)
40 Hz – 20 kHz (System)
170 Hz – 20 kH z (Satellites)

Nominal Dispersion
170 ° conical

Long-Term Power Handling
System: 70/100 V: 200 W (800 W peak)
System Low impedance: 100 W (400 W peak)
Satellites: 12W (48W Peak)

Sensitivity (SPL / 1 W @ 1 m)
82 dB SPL (System)
84 dB SPL (Satellites)

Maximum SPL @ 1 m
System: 93 dB (99 dB SPL peak in a 45,000 ft³ room, with RT60 of 1 second, +/- 3 dB)
Satellites : 95 dB (101 dB SPL peak)

Nominal Impedance
4-Cube System: 6 Ω per channel
2-Cube System: 5 Ω per channel (surface);
6 Ω per channel (flush)

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