VOLT B250.8
Woofer
10″ / 250 mm
Nominal diameter
32 Hz
Resonance
0.3
Q factor
91 dB
Sensitivity
± 5.5 mm
Linear excursion
300 W
Program Power
Discontinued
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
90.8
dB
Frequency response
24 - 1000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
32.0
Hz
Mechanical quality factor
QMS
2.21
Electrical quality factor
QES
0.35
Total quality factor
QTS
0.30
Large signal parameters
Maximum linear excursion
xmax
5.5
mm
Maximum excursion before damage
xlim
12.5
mm
Air volume displaced at xmax
VD
178
cm³
Power handling
P
150
W
Program power
Pmax
300
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
6.1
Ω
Inductance (1kHz)
LE
1.0
mH
VC Diameter
38
mm
Winding material
Copper
Magnet
Force factor
Bl
11.9
N/A
Motor constant
Bl/√RE
4.82
N/√W
Weight
3.6
kg
Diaphragm
Effective diameter
203
mm
Effective area
SD
324
cm²
Moving mass
MMS
40
g
Moving mass (without air load)
MMD
35.4
g
Suspensions
Stiffness
KMS
1.64
N/mm
Compliance
CMS
610
µm/N
Equivalent volume to the compliance
VAS
89
L
Mechanical resistance
RMS
3.64
N·s/m
Dimensions
Nominal diameter
10
″
250
mm
Overall diameter
285
mm
Baffle cutout diameter
245
mm
Overall depth
119
mm
Flange thickness
9
mm
Mounting depth
110
mm
Volume occupied by the driver
1.1
L
Net weight
4.9
kg
Frame material
Diecast Aluminium
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SpeakerbenchSimilar woofers to VOLT B250.8
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fS
32 Hz
SD
216 cm²
32 - 9000 Hz
QTS
0.35
xmax
7.0 mm
SPL1W
90 dB
Bl/√RE
3.43
Pmax
180 W
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8″Subwoofer
fS
34 Hz
SD
230 cm²
35 - 2500 Hz
QTS
0.30
xmax
6.0 mm
SPL1W
91 dB
Bl/√RE
3.41
Pmax
250 W
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10″Subwoofer
fS
35 Hz
SD
353 cm²
35 - 2000 Hz
QTS
0.32
xmax
6.0 mm
SPL1W
91 dB
Bl/√RE
6.01
Pmax
600 W