B&W ISW-4 Passive Subwoofer

Need big sound, slamming bass and audiophile extension, but donʼt want to see where it comes from? The ISW-4 in-wall subwoofer is for you. Two long-throw 200mm (8in) drivers allow it to move the large volumes of air needed for high-quality low-frequency output. The speaker is housed in its own sturdy back box for rock-solid stability and minimum sound bleed, and is powered by the SA250, a separate audiophile-standard 250W Class D amplifier.

Dimensions | Metric :10-1/4” W x 10-1/4” D x 10-1/4” H | 26.0 x 26.0 x 26.0 cm
Driver Complement :One high-definition 7-1/2" long throw woofer, pressure coupled to two 7-1/2” low bass radiators
Frequency Response :16 Hz – 200 Hz
Internal Amplifier Power :650 watts
Auto On / Off :Signal Sensing (US) | Signal Sensing and Switched (International)
Power Requirements :110 volts Alternating Current (US) | 220 volts Alternating Current (International)
High Level Inputs :5 way binding posts
High Level Outputs :5 way binding posts
Subwoofer Inputs :One LFE input (for SW preout only)
Low Level Inputs :Two low level inputs: left and right low level in
Low Level High Pass Crossover :12 dB/octave continuously variable from 40 Hz to 150 Hz: Available only with low level inputs and outputs
Low Pass Crossover% :24 dB/octave continuously variable from 40 Hz – 150 Hz:
Available Finishes :Piano-Gloss Black
Accessories :Rubber feet; Isolation spikes
Fuse :8 amp 250 volt Slo Blo (US) | 4 amp 250 volt Slo Blo (International)
Weight | Metric :25 lbs | 11.3 kg
Warranty :5 Years; 3 Years for Amplifiers

Type     Advanced YST II and QD-Bass Subwoofer
Driver     25cm(10'') cone
Dynamic Power     250 W
Frequency Response     20-160 Hz
Advanced YST     Advanced YST II
QD-Bass Technology     Front-firing
High-Efficiency Power Amplifier     Yes
Linear Port     Yes
BASS (Bass Action Selector System)     Yes
Standby Power Consumption     0.3 W
Dimensions (W x H x D)     380 x 368 x 420 mm
Weight     18.5 kg

Dimensions | Metric :12” W x 12” D x 12-1/2” H | 30.5 x 30.5 x 31.8 cm
Driver Complement :One high-definition 8" long throw woofer, pressure coupled to two 8” low bass radiators
Frequency Response :14 Hz – 200 Hz
Internal Amplifier Power :1250 watts
Auto On / Off :Signal Sensing (US) | Signal Sensing and Switched (International)
Power Requirements :110 volts Alternating Current (US) | 220 volts Alternating Current (International)
High Level Inputs :Two pairs of 5 way binding posts
High Level Outputs :Two pairs of 5 way binding posts
Subwoofer Inputs :One LFE input (for SW preout only)
Low Level Inputs :Two low level inputs: left and right low level in
Low Level Outputs :Two low level outputs: left and right low level out
High Level High Pass Crossover :Non Variable 6 dB/octave @ 80 Hz: Available only with high level inputs and outputs only
Low Level High Pass Crossover :12 dB/octave continuously variable from 40 Hz to 150 Hz. Available only with low level inputs and outputs
Low Pass Crossover% :24 dB/octave, continuously variable from 40 Hz – 150 Hz: Available only with high level inputs and outputs or low level inputs and outputs
Available Finishes :Piano-Gloss Black
Accessories :Rubber feet; Isolation spikes
Fuse :8 amp 250 volt Slo Blo (US) | 4 amp 250 volt Slo Blo (International)
Weight | Metric :42 lbs | 19.0 kg
Warranty :5 Years; 3 Years for Amplifiers

    Pressure vessel enclosure

500W ICEpower® amplifier
Switch mode power supply
Description     Active closed-box subwoofer system
Drive unit     2x f200mm (8 in) mica / aluminium diaphragm long-throw
Frequency range     -6dB at 18Hz and 40/140Hz adjustable (EQ at i)
Frequency response     ±3dB 21Hz – 31/110Hz adjustable (EQ at i)
Power output:     500W
Rated power consumption:     110W (105W - 100V version)
Input impedance:     100kΩ
Signal / noise:     >90dB
Functions:     Volume level
Low-pass filter frequency
Bass roll-off alignment
Auto sense on/standby
Phase switch
Inputs:     Line In (RCA Phono)
Speaker Level In (FCC68 4/4)

Crossover Tuning    
Mushrooms    
Description     Active closed-box subwoofer system
Drive unit     ø250mm (10 in) paper/Kevlar® cone long-throw
Frequency range     -6dB at 18Hz and 25/140Hz adjustable (EQ at A)
Frequency response     ±3dB 25Hz – 40/140Hz adjustable (EQ at A)
Bass Extension     -6dB at 18Hz (position A)

-6dB at 23Hz (position B)

-6dB at 28Hz (position C)
Amplifier     Power output: 500W
Rated power consumption:     98W / 1W standby
Input impedance:     33kΩ
Signal / noise:     >90dB
Functions:     Input level (line in)

Input level (speaker in)

Low-pass filter frequency (line in only)

Low-pass filter bypass

Bass extension

Bass roll-off alignment

Auto sense on/standby

Phase switch
Inputs:     Line In (RCA Phono)

Speaker in (Binding post)

12v trigger (3.5mm jack)

Low-pass filter

Active 4th-order, variable cut-off frequency
Dimensions     Height: 325mm (12.8 in) not including feet

Width: 325mm (12.8 in)

Depth: 375mm (14.8 in) including grille and controls
Net weight     15.5kg (34.4 lb)
Finishes     Matte Black