Jensen Punch BP 15/250
Bass Guitar Speaker
15″ / 385 mm
Nominal diameter
47 Hz
Resonance
0.51
Q factor
95 dB
Sensitivity
± 3.4 mm
Linear excursion
500 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
94.9
dB
Thiele & Small parameters
Resonance frequency (free air)
fS
47.0
Hz
Mechanical quality factor
QMS
4.26
Electrical quality factor
QES
0.58
Total quality factor
QTS
0.51
Large signal parameters
Maximum linear excursion
xmax
3.4
mm
Maximum excursion before damage
xlim
7.0
mm
Air volume displaced at xmax
VD
257
cm³
Power handling
P
250
W
Program power
Pmax
500
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
6.6
Ω
Inductance (1kHz)
LE
1.07
mH
VC Diameter
65
mm
Winding height
HVC
13
mm
Winding material
Copper
Former material
Aluminum
Magnet
Flux density
B
1.15
T
Force factor
Bl
15.31
N/A
Motor constant
Bl/√RE
5.96
N/√W
Air gap height
HAG
8
mm
Weight
1.45
kg
Material
Ferrite
Diaphragm
Effective diameter
310
mm
Effective area
SD
755
cm²
Moving mass
MMS
69.7
g
Moving mass (without air load)
MMD
54.6
g
Material
Paper
Suspensions
Stiffness
KMS
6.1
N/mm
Compliance
CMS
164
µm/N
Equivalent volume to the compliance
VAS
133
L
Mechanical resistance
RMS
4.83
N·s/m
Surround material
Treated Cloth
Dimensions
Nominal diameter
15
″
385
mm
Overall diameter
385
mm
Volume occupied by the driver (estimated)
2.4
L
Net weight
5.4
kg
Frame material
Pressed Sheet
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SpeakerbenchSimilar speaker drivers to Jensen BP 15/250
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15″Woofer
fS
46 Hz
SD
855 cm²
45 - 3000 Hz
QTS
0.50
xmax
4.7 mm
SPL1W
95 dB
Bl/√RE
6.83
Pmax
500 W
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15″Subwoofer
fS
46 Hz
SD
880 cm²
50 - 4000 Hz
QTS
0.48
xmax
8.0 mm
SPL1W
95 dB
Bl/√RE
7.44
Pmax
1000 W
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15″Low frequency
fS
48 Hz
SD
855 cm²
45 - 4000 Hz
QTS
0.48
xmax
3.9 mm
SPL1W
96 dB
Bl/√RE
7.44
Pmax
600 W