VOLT BM228.8
Woofer
8″ / 220 mm
Nominal diameter
35 Hz
Resonance
0.35
Q factor
88 dB
Sensitivity
± 4 mm
Linear excursion
300 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
87.6
dB
Frequency response
30 - 3000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
35.0
Hz
Mechanical quality factor
QMS
5.80
Electrical quality factor
QES
0.38
Total quality factor
QTS
0.35
Large signal parameters
Maximum linear excursion
xmax
4.0
mm
Maximum excursion before damage
xlim
12.5
mm
Air volume displaced at xmax
VD
86
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
1.26
mH
VC Diameter
38
mm
Winding material
Copper
Magnet
Force factor
Bl
11.7
N/A
Motor constant
Bl/√RE
4.86
N/√W
Weight
3.6
kg
Diaphragm
Effective diameter
165
mm
Effective area
SD
214
cm²
Moving mass
MMS
40
g
Moving mass (without air load)
MMD
37.5
g
Material
Coated Black HIPS
Suspensions
Stiffness
KMS
2.0
N/mm
Compliance
CMS
500
µm/N
Equivalent volume to the compliance
VAS
32
L
Mechanical resistance
RMS
1.52
N·s/m
Surround material
Rubber
Dimensions
Nominal diameter
8
″
220
mm
Overall diameter
235
mm
Baffle cutout diameter
200
mm
Overall depth
106
mm
Flange thickness
9
mm
Mounting depth
97
mm
Volume occupied by the driver
0.8
L
Net weight
4.1
kg
Frame material
Diecast Aluminium
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Export this driver to a simulation software:
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QSpeakers
SpeakerSim
MfbLabs
SpeakerbenchSimilar woofers to VOLT BM228.8
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fS
35 Hz
SD
330 cm²
35 - 500 Hz
QTS
0.38
xmax
9.0 mm
SPL1W
87 dB
Bl/√RE
7.32
Pmax
650 W
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8″Woofer
fS
35 Hz
SD
211 cm²
35 - 7000 Hz
QTS
0.33
xmax
5.5 mm
SPL1W
88 dB
Bl/√RE
4.36
Pmax
160 W
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8″Woofer
fS
34 Hz
SD
211 cm²
35 - 4000 Hz
QTS
0.31
xmax
5.5 mm
SPL1W
88 dB
Bl/√RE
4.11
Pmax
160 W