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.

System Format:    Sealed Cabinet. 25mm M.D.F construction with internal bracing. Sealed amplifier compartment
Low Frequency Limit:    18 Hz
Upper Frequency Limit:    40 - 120 Hz Variable
Low Pass Filter Alignment:    Active 4th order 24dB/octave (6/12/18/24 dB user adjustable)
Amplifier Power Output    650 watts Continuous. 1200 watts (peak)
Amplifier Classification    D2AudioTM* DSP controlled, Class-D amplifier system. High current switch mode power supply (smpsu)
Equalisation    4 Settings (Off/Music/Movie/Impact)
Phase Control    0-90-180-270 degrees
Auto Sensing Input Level Requirements    Line Level > 2mV. Standby after 10 minutes if no signal sensed
Digital Volume Level    -60 to +10dB in 1dB increments
Drive Unit Complement    1 x 15” C-CAM® sub-woofer driver featuring triple suspension
3” long throw voice coil
12V Trigger Input    3.5mm mono jack socket
Connections    Stereo RCA in/out
LFE in/out
12V Trigger in (3.5mm mono jack)
LEO* - 3.5mm Microphone input jack (microphone supplied)
Input Impedance    20 kohms
Dimensions (H x W x D)    430 x 400 x 400 mm (16 15/16 x 15 3/4 x 15 3/4 Inches)
Grille Depth    28 mm (1 1/8 Inches)
Weight (unpacked)    35.3 kg (77.6 lbs)
Mains Input Voltage    100 - 120 Vac / 220 - 240 Vac 50/60 Hz (Factory preset)
Electrical Certifications    CE/CB/ETL/Fcc/ErP (Energy saving compliant)
Power Consumption    Maximum 1000W. Standby Fuse Type    20mm UL/VDE (Value is region specific)
IR Remote Control Code    NEC SH6122

Outer Flange Dimensions | (Metric) :15-1/2” W x 26-3/16” H | 39.4 x 66.5 cm
Cut Out Dimensions | (Metric) :14-3/8” W x 25-1/8” H | 36.5 x 63.8 cm
Depth from Flange | Metric :4” | 10.2 cm
Driver Complement :One 13" Long-Excursion Woofer coupled to a 13" infrasonic Radiator
Frequency Response :14 Hz – 200 Hz
Impedance :4 ohms
Required Amplifier :SubAmp 600 (available separately)
Inputs :One pair of gold plated spring loaded posts
Enclosure :Sealed Medite
Available Finishes :Paintable White
Accessories :Paint mask; Cut-out template; Paintable removable all metal grill
Packaging :One to a carton
Weight | (Metric) :45 lbs | 20.4 kg
Warranty :5 Years

Outer Flange Dimensions | (Metric) :15-1/2” W x 21” H | 39.4 x 53.3 cm
Cut Out Dimensions | (Metric) :14-3/8” W x 19-7/8” H | 36.5 x.50.5 cm
Depth from Flange | Metric :3-13/16” | 9.7 cm
Driver Complement :One 10" Long-Excursion Woofer coupled to one 10" infrasonic Radiator
Frequency Response :16 Hz – 200 Hz
Impedance :4 ohms
Required Amplifier :SubAmp 600 (available separately)
Inputs :One pair of gold plated spring loaded posts
Enclosure :Sealed Medite
Available Finishes :Paintable White
Accessories :Paint mask; Cut-out template; Paintable removable all metal grill
Packaging :One to a carton
Weight | (Metric) :30 lbs | 13.6 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

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