Jensen Punch BP 8/150
Bass Guitar Speaker
8″ / 209 mm
Nominal diameter
75 Hz
Resonance
0.33
Q factor
93 dB
Sensitivity
± 3.1 mm
Linear excursion
300 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
93.2
dB
Thiele & Small parameters
Resonance frequency (free air)
fS
74.7
Hz
Mechanical quality factor
QMS
3.61
Electrical quality factor
QES
0.36
Total quality factor
QTS
0.33
Large signal parameters
Maximum linear excursion
xmax
3.1
mm
Maximum excursion before damage
xlim
6.6
mm
Air volume displaced at xmax
VD
66
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
0.71
mH
VC Diameter
50
mm
Winding height
HVC
11
mm
Winding material
Copper
Former material
Kapton
Magnet
Flux density
B
1.1
T
Force factor
Bl
13.29
N/A
Motor constant
Bl/√RE
5.39
N/√W
Air gap height
HAG
10
mm
Weight
1.1
kg
Material
Ferrite
Diaphragm
Effective diameter
165
mm
Effective area
SD
214
cm²
Moving mass
MMS
22.4
g
Moving mass (without air load)
MMD
20.1
g
Material
Paper
Suspensions
Stiffness
KMS
4.93
N/mm
Compliance
CMS
203
µm/N
Equivalent volume to the compliance
VAS
13.1
L
Mechanical resistance
RMS
2.91
N·s/m
Surround material
Treated Cloth
Dimensions
Nominal diameter
8
″
209
mm
Overall diameter
209
mm
Volume occupied by the driver (estimated)
1.3
L
Net weight
3.1
kg
Frame material
Pressed Sheet
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SpeakerbenchSimilar speaker drivers to Jensen BP 8/150
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8″Woofer
fS
73 Hz
SD
220 cm²
70 - 3000 Hz
QTS
0.33
xmax
5.0 mm
SPL1W
93 dB
Bl/√RE
5.42
Pmax
400 W
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8″Coaxial
fS
70 Hz
SD
223 cm²
70 - 20000 Hz
QTS
0.29
xmax
6.2 mm
SPL1W
94 dB
Bl/√RE
5.88
Pmax
500 W
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8″Coaxial
fS
70 Hz
SD
223 cm²
70 - 20000 Hz
QTS
0.30
xmax
6.2 mm
SPL1W
93 dB
Bl/√RE
6.17
Pmax
500 W