8″ / 203 mm
Nominal diameter
30 Hz
Resonance
0.32
Q factor
84 dB
Sensitivity
± 12 mm
Linear excursion
300 W
Program Power
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Available on (affiliate link)
Parts Express
$$$
Specifications
Sensitivity (1w, 1m, infinite baffle)
SPL1W
84.1
dB
Frequency response
30 - 800
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
30.0
Hz
Mechanical quality factor
QMS
3.70
Electrical quality factor
QES
0.35
Total quality factor
QTS
0.32
Large signal parameters
Maximum linear excursion
xmax
12.0
mm
Air volume displaced at xmax
VD
264
cm³
Power handling
P
150
W
Program power
Pmax
300
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
3.2
Ω
Inductance (1kHz)
LE
0.69
mH
VC Diameter
50
mm
Magnet
Force factor
Bl
13.94
N/A
Motor constant
Bl/√RE
7.79
N/√W
Air gap height
HAG
8
mm
Material
Neodymium
Diaphragm
Effective diameter
167
mm
Effective area
SD
220
cm²
Moving mass
MMS
99.8
g
Moving mass (without air load)
MMD
97.4
g
Material
Paper
Suspensions
Stiffness
KMS
4.47
N/mm
Compliance
CMS
224
µm/N
Equivalent volume to the compliance
VAS
15.4
L
Mechanical resistance
RMS
5.08
N·s/m
Surround material
Rubber
Dimensions
Nominal diameter
8
″
203
mm
Volume occupied by the driver (estimated)
1.1
L
Net weight
2.625
kg
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fS
30 Hz
SD
220 cm²
30 - 1000 Hz
QTS
0.28
xmax
12.1 mm
SPL1W
84 dB
Bl/√RE
7.64
Pmax
240 W
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fS
30 Hz
SD
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30 - 800 Hz
QTS
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xmax
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SPL1W
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Bl/√RE
8.01
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fS
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SD
125 cm²
36 - 1100 Hz
QTS
0.34
xmax
6.0 mm
SPL1W
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Bl/√RE
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Pmax
200 W