VOLT BM220.1
Woofer
8″ / 220 mm
Nominal diameter
35 Hz
Resonance
0.2
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
90.5
dB
Frequency response
40 - 2500
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
35.0
Hz
Mechanical quality factor
QMS
1.50
Electrical quality factor
QES
0.23
Total quality factor
QTS
0.20
Large signal parameters
Maximum linear excursion
xmax
5.5
mm
Maximum excursion before damage
xlim
12.5
mm
Air volume displaced at xmax
VD
118
cm³
Power handling
P
150
W
Program power
Pmax
300
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.7
Ω
Inductance (1kHz)
LE
1.0
mH
VC Diameter
38
mm
Winding material
Copper
Magnet
Force factor
Bl
12.7
N/A
Motor constant
Bl/√RE
5.32
N/√W
Weight
3.6
kg
Diaphragm
Effective diameter
165
mm
Effective area
SD
214
cm²
Moving mass
MMS
30
g
Moving mass (without air load)
MMD
27.5
g
Suspensions
Stiffness
KMS
1.47
N/mm
Compliance
CMS
680
µm/N
Equivalent volume to the compliance
VAS
43
L
Mechanical resistance
RMS
4.4
N·s/m
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
4.5
kg
Frame material
Diecast Aluminum
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6.5″Mid-range
fS
33 Hz
SD
137 cm²
33 - 5000 Hz
QTS
0.21
xmax
3.5 mm
SPL1W
89 dB
Bl/√RE
3.8
Pmax
100 W
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6.5″Woofer
fS
37 Hz
SD
133 cm²
37 - 4000 Hz
QTS
0.19
xmax
6.0 mm
SPL1W
91 dB
Bl/√RE
4.08
Pmax
300 W
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8″Subwoofer
fS
40 Hz
SD
227 cm²
45 - 1200 Hz
QTS
0.19
xmax
7.4 mm
SPL1W
91 dB
Bl/√RE
7.4
Pmax
700 W