Bowers Wilkins Speaker DM303 User Manual

300 Series  
B&W Loudspeakers Ltd  
Dale Road  
Worthing West Sussex  
BN11 2BH England  
T +44 (0) 1903 221800  
F +44 (0) 1903 221801  
UK Sales Enquiries and Service  
T +44 1903 221 500  
E uksales@bwspeakers.com  
Kevlar is a registered trademark of DuPont.  
Nautilus is a trademark of B&W Loudspeakers Ltd.  
Copyright © B&W Loudspeakers Ltd.  
Stands featured within this brochure are  
not supplied with the speakers. E&OE.  
Design by Thomas Manss & Company. Printed in Spain.  
B&W Loudspeakers Ltd reserves the right to amend  
details of the specifications without notice in line  
with technical developments.  
B&W Loudspeakers of America  
T +1 978 664 2870  
E marketing@bwaudio.com  
B&W Loudspeakers (Asia) Ltd  
T +852 2 790 8903  
E bwahome@bwspeakerasia.com.hk  
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The LCR3 is magnetically  
shielded so that it can be  
placed right next to a TV  
without distorting the  
All three models  
incorporate Flowport.  
The dimpled surface  
of the flared ends of  
the tube use golf ball  
aerodynamics to smooth  
the airflow through the  
port, reducing turbulence  
noise to negligible levels.  
picture. The symmetrical  
driver configuration gives  
a choice of orientation for  
a truly versatile home  
theatre speaker; horizontally  
as centre channel on top  
of the TV, or in vertical  
position to left and right.  
With a powerful bass  
frequency output generated  
from inside a compact and  
stylish cabinet, the ASW300  
subwoofer is the ideal partner  
for any 300 Series home  
cinema or stereo system.  
Theres the DM303 2-way speaker, which is equally at home  
with two-channel stereo or as a front left/right or surround  
speaker in a home theatre installation where magnetic  
shielding is not required. The LCR3 speaker is designed  
primarily for home theatre, and its magnetic shielding allows  
it to be positioned on or close to the TV without affecting  
the picture. Finally, the ASW300 subwoofer delivers an added  
kick to the bass output of your 300 Series system. Featuring  
®
a 200mm paper/Kevlar cone, the ASW300 will sit discreetly  
in your room, its internal 100w amplifier generating a  
noticeably more powerful sound environment, whether  
from a stereo or home theatre system.  
The range features a host of Nautilus -derived technolo-  
gies. Inside both the DM303 and LCR3, hidden away behind  
the tweeter, is a damped tapering tube. The tube-loaded  
tweeter ensures far greater absorption of unwanted radiation  
from the rear of the dome, giving rise to a cleaner, more  
focused and natural high frequency sound.  
The bass/midrange drivers of the DM303 and LCR3 use  
woven glass fibre cones, which function in a similar fashion  
®
to the Kevlar cones used in B&Ws more exclusive ranges by  
cancelling out unwanted sound waves. Distortion and signal  
degradation are minimised by an audiophile-quality crossover  
featuring air core inductors and plastic film capacitors.  
All of these ingredients are skillfully blended to offer  
a level of performance unprecedented at this level, and  
matched by a stunning design. The front baffle, moulded in  
inert mica-filled polypropylene, has a subtly curved outline  
and is dimpled to echo the theme of the Flowport at the rear;  
itself elegantly combined with the easy-access terminal panel  
that accepts all common terminations, from spades to  
banana plugs to bared wire-ends.  
Versatile and affordable, beautifully designed and easily  
expandable, the 300 Series is the perfect introduction to  
the world of Bowers & Wilkins.  
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DM303  
LCR3  
ASW300  
Technical features  
Nautilustweeter  
Flowport  
Nautilustweeter  
Flowport  
Technical features  
Bass Overload Suppression Circuitry  
Flowport  
Magnetic shielding  
Description  
Drive units  
2-way vented-box system  
2-way vented-box system  
Description  
Drive unit  
Active vented-box subwoofer system  
®
ø200mm (8 in) paper/Kevlar cone  
1x ø160mm (6 in) woven fibreglass  
cone bass/midrange  
2x ø110mm (4.5 in) woven fibreglass  
cone bass/midrange  
1x ø26mm (1 in) metal dome high-frequency  
1x ø26mm (1in) metal dome high-frequency  
-6dB at 23Hz and 180Hz adjustable (EQ at A)  
-3dB 27Hz–150Hz adjustable (EQ at A)  
Frequency range  
Frequency response  
Dispersion  
-6dB at 52Hz and 30kHz  
-6dB at 60Hz and 30kHz  
Frequency range  
Frequency response  
Amplifier  
72Hz – 20kHz 3dB on reference axis  
80Hz – 20kHz 3dB on reference axis  
Within 2dB of response on reference axis  
Horizontal:  
Vertical:  
Power output:  
Input impedance:  
Signal / noise:  
Functions:  
100W continuous  
22k  
>90dB  
Within 2dB of response on reference axis  
Horizontal: over 40° arc  
over 40º arc  
over 10º arc  
Vertical:  
over 10° arc  
Output level  
Sensitivity  
88dB spl (2.83V, 1m)  
90dB spl (2.83V, 1m)  
Low-pass filter frequency  
Low-pass filter bypass  
Bass roll-off alignment  
Auto sense on/standby  
Line In (RCA Phono)  
Speaker level (binding  
posts)  
Harmonic distortion  
2nd and 3rd harmonics (90dB, 1m)  
<1% 90Hz – 20kHz  
2nd and 3rd harmonics (90dB, 1m)  
<1% 70Hz – 20kHz  
Nominal impedance  
Crossover frequency  
8(minimum 4.3)  
8(minimum 3.3)  
Inputs:  
4kHz  
4kHz  
Recommended  
amplifier power  
25W – 100W into 8on  
unclipped programme  
25W – 100W into 8on  
unclipped programme  
Outputs:  
Line Out (RCA Phono,  
high-passed)  
Max. recommended  
cable impedance  
0.1Ω  
0.1Ω  
Link Out (RCA Phono,  
parallel to Line In)  
Speaker level out  
(high-passed)  
Dimensions  
Height:  
Width:  
Depth:  
331mm (13 in)  
201mm (7.9 in)  
242mm (9.5 in)  
Height:  
Width:  
Depth:  
152mm (6 in)  
418mm (16.5 in)  
221mm (8.7 in)  
Active 2nd-order, variable cut-off frequency  
Low-pass filter  
High-pass filter  
Net weight  
Finishes  
5 kg (11 lb)  
Cabinet:  
5 kg (11 lb)  
Cabinet:  
Line level: Active 3rd-order at 80Hz  
Speaker level: Passive 1st-order at 80Hz  
(into 8load)  
Black Ash vinyl  
Maple vinyl  
Black Ash vinyl  
Maple vinyl  
Height: 405mm (16 in) including spike feet  
Width: 330mm (13 in)  
Dimensions  
Grille:  
Black cloth  
Grille:  
Black cloth  
Depth: 375mm (14.8 in) including grille  
and controls  
15kg (33 lb)  
Net weight  
Black Ash Vinyl  
Maple Vinyl  
Cabinet finish  
Black cloth  
Grille  
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