Jensen Smooth BS 8N/250A
Bass Guitar Speaker
8″ / 210 mm
Nominal diameter
59 Hz
Resonance
0.37
Q factor
91 dB
Sensitivity
± 5 mm
Linear excursion
500 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
90.5
dB
Thiele & Small parameters
Resonance frequency (free air)
fS
59.0
Hz
Mechanical quality factor
QMS
6.72
Electrical quality factor
QES
0.39
Total quality factor
QTS
0.37
Large signal parameters
Maximum linear excursion
xmax
5.0
mm
Maximum excursion before damage
xlim
8.0
mm
Air volume displaced at xmax
VD
107
cm³
Power handling
P
250
W
Program power
Pmax
500
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.5
Ω
Inductance (1kHz)
LE
0.8
mH
VC Diameter
65
mm
Winding height
HVC
18
mm
Winding material
Copper
Former material
Glass Fiber
Magnet
Flux density
B
1.04
T
Force factor
Bl
12.85
N/A
Motor constant
Bl/√RE
5.48
N/√W
Air gap height
HAG
10
mm
Weight
0.22
kg
Material
Neodymium
Diaphragm
Effective diameter
165
mm
Effective area
SD
214
cm²
Moving mass
MMS
32
g
Moving mass (without air load)
MMD
29.7
g
Material
Paper
Suspensions
Stiffness
KMS
4.35
N/mm
Compliance
CMS
230
µm/N
Equivalent volume to the compliance
VAS
14.9
L
Mechanical resistance
RMS
1.77
N·s/m
Surround material
Treated Cloth
Dimensions
Nominal diameter
8
″
210
mm
Overall diameter
210
mm
Volume occupied by the driver (estimated)
0.74
L
Net weight
1.8
kg
Frame material
Aluminium Die-Cast
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SpeakerbenchSimilar speaker drivers to Jensen BS 8N/250A
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8″Subwoofer
fS
54 Hz
SD
214 cm²
50 - 3500 Hz
QTS
0.33
xmax
5.0 mm
SPL1W
91 dB
Bl/√RE
5.27
Pmax
600 W
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8″Woofer
fS
58 Hz
SD
209 cm²
70 - 5000 Hz
QTS
0.37
xmax
8.2 mm
SPL1W
91 dB
Bl/√RE
5.09
Pmax
400 W
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8″Woofer
fS
56 Hz
SD
223 cm²
60 - 6300 Hz
QTS
0.32
xmax
6.9 mm
SPL1W
92 dB
Bl/√RE
5.65
Pmax
400 W