8″ / 223 mm
Nominal diameter
38 Hz
Resonance
0.38
Q factor
89 dB
Sensitivity
± 6 mm
Linear excursion
120 W
Program Power
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Specifications
Sensitivity (1w, 1m, infinite baffle)
SPL1W
88.6
dB
Frequency response
35 - 5500
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
37.7
Hz
Mechanical quality factor
QMS
1.85
Electrical quality factor
QES
0.48
Total quality factor
QTS
0.38
Large signal parameters
Maximum linear excursion
xmax
6.0
mm
Air volume displaced at xmax
VD
128
cm³
Power handling
P
80
W
Program power
Pmax
120
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
3.3
Ω
Inductance (1kHz)
LE
0.51
mH
VC Diameter
39
mm
Magnet
Force factor
Bl
6.4
N/A
Motor constant
Bl/√RE
3.52
N/√W
Material
Ferrite
Diaphragm
Effective diameter
165
mm
Effective area
SD
214
cm²
Moving mass
MMS
25
g
Moving mass (without air load)
MMD
22.6
g
Material
Paper / Kevlar
Suspensions
Stiffness
KMS
1.41
N/mm
Compliance
CMS
710
µm/N
Equivalent volume to the compliance
VAS
45.8
L
Mechanical resistance
RMS
3.2
N·s/m
Surround material
Rubber
Dimensions
Nominal diameter
8
″
223
mm
Overall diameter
223
mm
Baffle cutout diameter
184
mm
Overall depth
84
mm
Volume occupied by the driver (estimated)
0.76
L
Frame material
Cast Aluminium
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fS
36 Hz
SD
227 cm²
40 - 12500 Hz
QTS
0.39
xmax
10.4 mm
SPL1W
88 dB
Bl/√RE
4.42
Pmax
250 W
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7″Mid-range
fS
36 Hz
SD
137 cm²
36 - 3000 Hz
QTS
0.35
xmax
5.5 mm
SPL1W
88 dB
Bl/√RE
2.82
Pmax
160 W
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6.75″Mid-range
fS
38 Hz
SD
137 cm²
38 - 5000 Hz
QTS
0.44
xmax
3.0 mm
SPL1W
87 dB
Bl/√RE
2.37
Pmax
80 W