Kartesian Sub185_vKi
Subwoofer
8″ / 185 mm
Nominal diameter
28 Hz
Resonance
0.32
Q factor
86 dB
Sensitivity
± 15 mm
Linear excursion
250 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
85.9
dB
Frequency response
25 - 1500
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
28.0
Hz
Mechanical quality factor
QMS
6.80
Electrical quality factor
QES
0.33
Total quality factor
QTS
0.32
Large signal parameters
Maximum linear excursion
xmax
15.0
mm
Air volume displaced at xmax
VD
269
cm³
Power handling
P
125
W
Program power
Pmax
250
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.2
Ω
Inductance (1kHz)
LE
0.38
mH
Magnet
Force factor
Bl
10.1
N/A
Motor constant
Bl/√RE
4.43
N/√W
Diameter
120
mm
Height
64
mm
Diaphragm
Effective diameter
151
mm
Effective area
SD
179
cm²
Moving mass
MMS
37
g
Moving mass (without air load)
MMD
35.3
g
Suspensions
Stiffness
KMS
1.14
N/mm
Compliance
CMS
874
µm/N
Equivalent volume to the compliance
VAS
39.7
L
Mechanical resistance
RMS
0.96
N·s/m
Dimensions
Nominal diameter
8
″
185
mm
Overall diameter
185
mm
Baffle cutout diameter
168
mm
Overall depth
129
mm
Flange thickness
7
mm
Mounting depth
122
mm
Volume occupied by the driver (estimated)
1.0
L
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fS
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SD
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30 - 6000 Hz
QTS
0.31
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4.8 mm
SPL1W
87 dB
Bl/√RE
3.1
Pmax
120 W
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SD
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SD
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29 - 2500 Hz
QTS
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xmax
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SPL1W
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