8″ / 203 mm
Nominal diameter
52 Hz
Resonance
0.49
Q factor
83 dB
Sensitivity
± 10.25 mm
Linear excursion
600 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
82.9
dB
Frequency response
55 - 500
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
52.0
Hz
Mechanical quality factor
QMS
4.24
Electrical quality factor
QES
0.56
Total quality factor
QTS
0.49
Large signal parameters
Maximum linear excursion
xmax
10.25
mm
Air volume displaced at xmax
VD
390
cm³
Power handling
P
400
W
Program power
Pmax
600
W
Voice Coil
Nominal impedance
Z
2 x 2
Ω
DC resistance (in series)
RE
3.9
Ω
Inductance (1kHz, in series, estimated)
LE
1.51
mH
VC Diameter
51
mm
Magnet
Force factor (in series)
Bl
11.7
N/A
Motor constant
Bl/√RE
5.92
N/√W
Diameter
140
mm
Diaphragm
Effective diameter
220
mm
Effective area
SD
380
cm²
Moving mass
MMS
234.2
g
Moving mass (without air load)
MMD
230.5
g
Suspensions
Stiffness
KMS
25.0
N/mm
Compliance
CMS
40
µm/N
Equivalent volume to the compliance
VAS
8.2
L
Mechanical resistance
RMS
18.05
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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