Boston Acoustics M25, Owner'S Manual

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4
Specifications
M350 M340 M250 M25
Frequency Range (±3dB): 45Hz – 30kHz 45Hz – 30kHz 60Hz – 30kHz 62Hz – 30kHz
High-Frequency Driver: 1” (2.5cm) 1” (2.5cm) 1” (2.5cm) 1” (2.5cm)
EWB Dome EWB Dome EWB Dome EWB Dome
Mid-Frequency Driver: 4½” (11.4cm) 4½” (11.4cm) 5¼” (13.3cm) —
mass loaded mass loaded polypropylene cone
polypropylene cone polypropylene cone mid/low driver
Low-Frequency Driver(s): 4 x 5¼” (13.3cm) 4 x 4½” (11.4cm) 5¼” (13.3cm) 5¼” (13.3cm)
polypropylene cones polypropylene cones polypropylene cone polypropylene cone
Crossover Frequency: 400/3,000Hz 390/3,100Hz 450/2,900Hz 3,000Hz
Impedance: Compatible with Compatible with Compatible with Compatible with
8 ohm outputs 8 ohm outputs 8 ohm outputs 8 ohm outputs
Sensitivity: [1 watt (2.83V) at 1m] 90dB 88dB 88dB 86dB
Recommended Amplifier Power 50-500 watts 50-350 watts 50-250 watts 50-200 watts
Dimensions (H x W x D): 42
3
/
8
x 9
5
/
8
x 12
3
/
16
” 40
3
/
8
x 8
13
/
16
x 11
7
/
16
” 38
7
/
16
x 9
5
/
8
x 9
13
/
16
” 12
3
/
8
x 6
15
/
16
x 10
3
/
16
”
(107.6 x 24.5 x 31cm) (102.6 x 22.4 x 29cm) (97.6 x 24.5 x 25cm) (31.4 x 17.6 x 25.8cm)
Weight: 55.9 lbs (25.4kg) 46.3 lbs (21.0kg) 35.3 lbs (16.0kg) 14.7 lbs (6.7kg)
Specifications
MCenter MSurround MSubwoofer
Frequency Range (±3dB): 68Hz – 22kHz 95Hz – 22kHz 23Hz – 150Hz
High-Frequency Driver: 2½” (6.4cm) 2½” (6.4cm) —
BMR flat planel BMR flat planel
Low-Frequency Driver(s): 2 x 4½” (11.4cm) 3½” (8.9cm) 10” (25.4cm) polypropylene cone
polypropylene cones polypropylene cone 2 x 8” (20.3cm) polypropylene
cone passive radiators
Crossover Frequency: 700Hz 700Hz 40Hz - 180Hz (variable)
Impedance: Compatible with Compatible with —
8 ohm outputs 8 ohm outputs
Sensitivity: [1 watt (2.83V) at 1m] 87dB 86dB —
Amplifier Power: — — 500 watts RMS
(1000 watts Peak)
Recommended Amplifier Power 50-200 watts 50-150 watts —
Dimensions (H x W x D): 6
1
/
8
x 21
5
/
8
x 7
1
/
16
” 9½ x 6
9
/
16
” x 4
7
/
16
” 13
1
/
16
x 16
3
⁄
4
x 15
7
⁄
16
”
(15.5 x 55 x 18cm) (24.2 x 16.6 x 11.3cm) (33.1 x 42.5 x 39.2cm)
Weight: 15.9 lbs (7.2kg) 5.5 lbs (2.5kg) 51.8 lbs (23.5kg)
Specifications subject to change without notice.