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Kevlar is a registered trademark of DuPont. 
Speakon is a registered trademark of Neutrik AG
Copyright © B&W Group Ltd. E&OE
Printed in China.

B&W Group (UK Sales)
T +44 1903 221 500
[email protected]

B&W Group North America
T +1 978 664 2870 
[email protected]

B&W Group Asia Ltd
T +852 3 472 9300
[email protected]

B&W Group Ltd  
Dale Road 
Worthing  West Sussex 
BN11 2BH  England

T +44 (0) 1903 221 800  
F +44 (0) 1903 221 801
[email protected]  
www.bowers-wilkins.com  

Fold-out must 

be at least 3 mm 

smaller!

II11915 

 Issue 

2

Custom Installation Series

ISW-4

SA250

Owner’s Manual 

Owner details

Title, first name, surname 

Address 

Town, postcode, country 

e-mail address 

Product details

Model 

Serial number 

 

Date of purchase 

Dealer details

Dealer name 

Address 

Town, postcode, country 

e-mail address 

Dealer stamp

Summary of Contents for ISW-4

Page 1: ...II11915 Issue 2 Custom Installation Series ISW 4 SA250 Owner s Manual O T A T e P M S D D D A T e D ...

Page 2: ...Figure 1 Figure 3 Figure 2 Figur Figur ...

Page 3: ... SA250 Figure 4a Figure 5 Figure 4b Óxä ...

Page 4: ...1 Figure 6a Figure 6b Figure 7a ...

Page 5: ...2 15mm 0 6in Figure 7b Figure 8 ...

Page 6: ...3 Figure 9 Figure 10 1 2 2 1 Housing Chuck Bushing Neutrik Speakon Connector NL4FC Insert ISW 4 SA250 NL4FC SA250 ISW 4 SA250 000 0000000 ...

Page 7: ...4 Figure 11 Subwoofer 1 Subwoofer 2 SA250 AC 230V 50 60Hz POWER 300W SA250 Serial No 000 0000000 2 1 3 2 1 3 1 Ground 2 3 NL4FC ...

Page 8: ...teries to excessive heat such as sunshine fire or the like The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated dangerous voltage within the product s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons The exclamation point within an equilateral triangle is intended to aler...

Page 9: ...lips screws and washers The ISW 4 is designed both for Home Theatre installations and to augment the bass performance of full range speakers in 2 channel audio systems All audio installations require some thought in installation if they are to reach their full performance potential and this manual will guide you through the process The SA250 subwoofer amplifier requires connection to the mains pow...

Page 10: ...be fixed with generous beads of mastic to ensure that no audible vibration occurs The sheetrock that extends over the front of the Back Box must have a hole cut accurately to the necessary profile so that the Wall Frame can be subsequently fitted in place and secured Apply the supplied gasket strip around the subwoofer hole in the back box Apply sheetrock over the entire front of the Back Box secu...

Page 11: ...amplifier front panel carries the following controls Volume Sets the overall volume of the subwoofer Filter Sets the low pass cut off frequency of the subwoofer filter Low pass In Out Engages or defeats the subwoofer filter Phase Reverses the subwoofer output phase Bass Extension Provides three bass extension options Movie Music EQ Provides equalisation options for music or movie programme materia...

Page 12: ... filter is switched OUT Set the EQUALISATION switch to MOVIE See the Fine Tuning section for more The subwoofer and subwoofer amplifier are not a THX licensed component but may be used with a THX controller if desired If a THX controller is used ensure that the subwoofer function is enabled This incorporates all the filtering and level setting required for the subwoofer in all modes For level cali...

Page 13: ...lters the subwoofer bass roll off alignment appropriate to MOVIE or MUSIC listening The MOVIE position gives a drier alignment more suited to the demands of action movie low frequency effects The MUSIC position is suited to a faster more accurate bass line The 3 5mm Equalisation input on the back panel is designed to receive a 12V signal that will toggle the MOVIE MUSIC setting at the front panel ...

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