8″ / 203 mm
Nominal diameter
69 Hz
Resonance
0.22
Q factor
96 dB
Sensitivity
± 3 mm
Linear excursion
450 W
Program Power
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Specifications
Sensitivity (1w, 1m, infinite baffle)
SPL1W
95.8
dB
Frequency response
100 - 3000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
69.0
Hz
Mechanical quality factor
QMS
6.43
Electrical quality factor
QES
0.22
Total quality factor
QTS
0.22
Large signal parameters
Maximum linear excursion
xmax
3.0
mm
Maximum excursion before damage
xlim
7.0
mm
Air volume displaced at xmax
VD
66
cm³
Power handling
P
225
W
Program power
Pmax
450
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.4
Ω
Inductance (1kHz)
LE
0.82
mH
VC Diameter
51
mm
Winding material
Copper
Former material
Polyimide
Magnet
Force factor
Bl
14.1
N/A
Motor constant
Bl/√RE
6.07
N/√W
Air gap height
HAG
7.9
mm
Weight
1.673
kg
Material
Ferrite
Diaphragm
Effective diameter
167
mm
Effective area
SD
218
cm²
Moving mass
MMS
19
g
Moving mass (without air load)
MMD
16.4
g
Material
Paper
Suspensions
Stiffness
KMS
3.57
N/mm
Compliance
CMS
280
µm/N
Equivalent volume to the compliance
VAS
18.3
L
Mechanical resistance
RMS
1.28
N·s/m
Surround material
Cloth
Dimensions
Nominal diameter
8
″
203
mm
Overall diameter
238
mm
Baffle cutout diameter
187
mm
Overall depth
95
mm
Volume occupied by the driver
1.04
L
Net weight
4.54
kg
Frame material
Die-cast aluminum
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fS
59 Hz
SD
360 cm²
55 - 5700 Hz
QTS
0.19
xmax
4.0 mm
SPL1W
96 dB
Bl/√RE
9.72
Pmax
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fS
67 Hz
SD
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65 - 3500 Hz
QTS
0.19
xmax
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SPL1W
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Bl/√RE
9.81
Pmax
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8″Mid-range
fS
68 Hz
SD
202 cm²
80 - 5000 Hz
QTS
0.22
xmax
3.3 mm
SPL1W
96 dB
Bl/√RE
5.17
Pmax
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