Bose FreeSpace 3 Series II Acoustimass 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.

Frequency Response (+/-3 dB)
50 Hz - 230 kHz
Frequency Range (-10 dB)
40 Hz - 315 Hz
Nominal Dispersion
Omni-directional below 200 Hz
Long-Term Power Handling
70/100 V: 200 W (800 W peak) mono
Low impedance: 50 W (200 W peak) per channel stereo or 100 W (400 W peak) mono
Sensitivity (SPL / 1 W @ 1 m)
Per channel: 76 dB SPL (Mono: 79 dB SPL)
Maximum SPL @ 1 m
Per channel: 96 dB SPL (102 dB SPL peak)
Mono: 102 dB SPL (108 dB SPL peak)
Nominal Impedance
6 Ω mono direct (transformer bypassed)

Bose FreeSpace 3 Flush-Mount Satellites

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)