VOLT B251.8

Woofer

10″ / 250 mm
Nominal diameter
31 Hz
Resonance
0.36
Q factor
88 dB
Sensitivity
± 5 mm
Linear excursion
300 W
Program Power
Driver
Port
Combined
Frequency response
Hz
Impedance
Ω
Impedance Phase
°
Excursion
mm
Velocity
m/s
SPL
dB
Acoustical Phase
°
Group Delay
ms
Transient response
ms
Discard
Apply
Sensitivity (1W, 1m, infinite baffle)
SPL1W
88.4
dB
Frequency response
24 - 1000
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
31.0
Hz
Mechanical quality factor
QMS
1.82
Electrical quality factor
QES
0.45
Total quality factor
QTS
0.36

Large signal parameters

Maximum linear excursion
xmax
5.0
mm
Maximum excursion before damage
xlim
12.5
mm
Air volume displaced at xmax
VD
162
cm³
Power handling
P
150
W
Program power
Pmax
300
W

Voice Coil

Nominal impedance
Z
8
Ω
DC resistance
RE
5.8
Ω
Inductance (1kHz)
LE
0.94
mH
VC Diameter
38
mm
Winding height
HVC
19
mm
Winding material
Copper

Magnet

Force factor
Bl
11.74
N/A
Motor constant
Bl/√RE
4.87
N/√W
Air gap height
HAG
9.5
mm
Diameter
134
mm
Weight
3.6
kg

Diaphragm

Effective diameter
203
mm
Effective area
SD
323
cm²
Moving mass
MMS
53.7
g
Moving mass (without air load)
MMD
49.3
g

Suspensions

Stiffness
KMS
2.04
N/mm
Compliance
CMS
490
µm/N
Equivalent volume to the compliance
VAS
72.6
L
Mechanical resistance
RMS
5.74
N·s/m

Dimensions

Nominal diameter
10
250
mm
Overall diameter
261
mm
Baffle cutout diameter
253
mm
Overall depth
119
mm
Volume occupied by the driver
1.1
L
Net weight
4.9
kg
Frame material
Diecast Aluminium
VOLT B251.8 SPL & Impedance
VOLT B251.8 Dimensions

Export this driver to a simulation software:

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8Woofer
fS
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SD
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QTS
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xmax
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Bl/√RE
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Pmax
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fS
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SD
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QTS
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