Skip Navigation Website Accessibility

Third Rock
Music Center

Mon-Wed 11am - 8pm  
 Thur-Fri 11am - 5pm 
Sat 10am - 5pm   Closed Sunday


B1 Subwoofer


Add to Cart
The Bose B1 Bass Module is a passive low-frequency, portable speaker intended for use with the Bose L1 Model I & Model II Systems. The speaker enhances the low-frequency response, adding depth and bass to musical instruments, DJ rigs and other sound reinforcement applications. The B1 may be connected to the power stand of the L1 Model I and L1 Model II, or use the optional A1 amplifier to provide added power to a pair of B1 speakers.

Bose B1 Specs

Power Rating Power, 4-ohm load: 250 watts RMS (1 kHz, 0.1% THD) 
Power, 8-ohm load: 125 watts RMS (1 kHz, 0.1% THD
Minimum Load Impedance 4 ohm
Signal-to-Noise Ratio 100dB (20 Hz to 20 kHz)
Voltage Gain 30dB
Input Sensitivity 1.15V (+3.4dBu)
Input Automatic, balanced/unbalanced level adjust
Input Impedance 55k ohms unbalanced, 110k ohms balanced
Frequency Range 20Hz to 20kHz ± 0.5dB
Output Balanced/unbalanced, dependent on INPUT connection type
Protection Self-resetting thermal, output short �� circuit, and over-current
Power Typical AC power requirements: 1.8A, 110VAC; 0.9A, 230VAC 
Peak inrush current: 28A (100-120VAC)
Operating Temperature 122°F (50°C)
Dimensions (WxHxD) 5.6 x 2.3 x 10.3" (140 x 56 x 258mm)
Weight 25.1 lb (11.4 kg)
Packaging Info
Package Weight 30.0 lb
Box Dimensions (LxWxH) 21.0 x 17.1 x 13.5"