Bowers & Wilkins DM303 ユーザーズマニュアル

ASW300

Active vented-box subwoofer system

ø200mm (8 in) paper/Kevlar

®

cone

-6dB at 23Hz and 180Hz adjustable (EQ at A)

-3dB 27Hz–150Hz adjustable (EQ at A)

Power output:

100W continuous

Input impedance:

22k

Ω

Signal / noise:

>90dB

Functions:

Output level

Low-pass filter frequency

Low-pass filter bypass

Bass roll-off alignment

Auto sense on/standby

Inputs:

Line In (RCA Phono)

Speaker level (binding 

posts)

Outputs:

Line Out (RCA Phono, 

high-passed)

Link Out (RCA Phono, 

parallel to Line In)

Speaker level out 

(high-passed)

Active 2nd-order, variable cut-off frequency

Line level: Active 3rd-order at 80Hz

Speaker level: Passive 1st-order at 80Hz 

(into 8

Ω

load)

Height: 405mm (16 in) including spike feet

Width: 330mm (13 in)

Depth: 375mm (14.8 in) including grille 

and controls

15kg (33 lb)

Black Ash Vinyl

Maple Vinyl

Black cloth

Description

Drive unit

Frequency range

Frequency response

Amplifier

Low-pass filter

High-pass filter

Dimensions

Net weight

Cabinet finish

Grille

DM303

LCR3

2-way vented-box system

2x ø110mm (4.5 in) woven fibreglass

cone bass/midrange 

1x ø26mm (1in) metal dome high-frequency

-6dB at 60Hz and 30kHz

80Hz – 20kHz  ±3dB on reference axis

Within 2dB of response on reference axis

Horizontal:

over 40º arc

Vertical:

over 10º arc

90dB spl (2.83V, 1m)

2nd and 3rd harmonics (90dB, 1m)

<1% 70Hz – 20kHz

8

Ω

(minimum 3.3

Ω

)

4kHz

25W – 100W into 8

Ω

on 

unclipped programme

0.1

Ω

Height:

152mm (6 in)

Width:

418mm (16.5 in)

Depth:

221mm (8.7 in)

5 kg (11 lb)

Cabinet:

Black Ash vinyl

Maple vinyl

Grille:

Black cloth

2-way vented-box system

1x ø160mm (6 in) woven fibreglass 

cone bass/midrange 

1x ø26mm (1 in) metal dome high-frequency

-6dB at 52Hz and 30kHz

72Hz – 20kHz  ±3dB on reference axis

Within 2dB of response on reference axis

Horizontal: over 40° arc

Vertical:

over 10° arc

88dB spl (2.83V, 1m)

2nd and 3rd harmonics (90dB, 1m)

<1% 90Hz – 20kHz

8

Ω

(minimum 4.3

Ω

)

4kHz

25W – 100W into 8

Ω

on 

unclipped programme

0.1

Ω

Height:

331mm (13 in)

Width:

201mm (7.9 in)

Depth:

242mm (9.5 in)

5 kg (11 lb)

Cabinet:

Black Ash vinyl

Maple vinyl

Grille:

Black cloth

Description

Drive units

Frequency range

Frequency response

Dispersion

Sensitivity

Harmonic distortion

Nominal impedance

Crossover frequency

Recommended 

amplifier power

Max. recommended

cable impedance

Dimensions

Net weight

Finishes