8″ / 203 mm
Nominal diameter
49 Hz
Resonance
0.53
Q factor
82 dB
Sensitivity
± 10.25 mm
Linear excursion
600 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
81.7
dB
Frequency response
55 - 500
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
49.0
Hz
Mechanical quality factor
QMS
3.85
Electrical quality factor
QES
0.62
Total quality factor
QTS
0.53
Large signal parameters
Maximum linear excursion
xmax
10.25
mm
Air volume displaced at xmax
VD
314
cm³
Power handling
P
400
W
Program power
Pmax
600
W
Voice Coil
Nominal impedance
Z
2 x 4
Ω
DC resistance (in series)
RE
6.4
Ω
Inductance (1kHz, in series, estimated)
LE
2.08
mH
VC Diameter
51
mm
Magnet
Force factor (in series)
Bl
15.4
N/A
Motor constant
Bl/√RE
6.09
N/√W
Diameter
140
mm
Diaphragm
Effective diameter
198
mm
Effective area
SD
307
cm²
Moving mass
MMS
175.8
g
Moving mass (without air load)
MMD
172.6
g
Suspensions
Stiffness
KMS
16.67
N/mm
Compliance
CMS
60
µm/N
Equivalent volume to the compliance
VAS
8
L
Mechanical resistance
RMS
14.06
N·s/m
Dimensions
Nominal diameter
8
″
203
mm
Baffle cutout diameter
185
mm
Mounting depth
100
mm
Volume occupied by the driver
2.0
L
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SD
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