Ciare PW257
Woofer
10″ / 250 mm
Nominal diameter
57 Hz
Resonance
0.3
Q factor
94 dB
Sensitivity
± 5.5 mm
Linear excursion
800 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
93.6
dB
Thiele & Small parameters
Resonance frequency (free air)
fS
57.0
Hz
Mechanical quality factor
QMS
3.20
Electrical quality factor
QES
0.33
Total quality factor
QTS
0.30
Large signal parameters
Maximum linear excursion
xmax
5.5
mm
Air volume displaced at xmax
VD
194
cm³
Power handling
P
400
W
Program power
Pmax
800
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.2
Ω
Inductance (1kHz)
LE
0.94
mH
VC Diameter
75
mm
Winding height
HVC
16
mm
Former material
Aluminum
Magnet
Force factor
Bl
15.86
N/A
Motor constant
Bl/√RE
6.95
N/√W
Air gap height
HAG
10
mm
Diaphragm
Effective diameter
212
mm
Effective area
SD
353
cm²
Moving mass
MMS
44.9
g
Moving mass (without air load)
MMD
40
g
Suspensions
Stiffness
KMS
5.88
N/mm
Compliance
CMS
170
µm/N
Equivalent volume to the compliance
VAS
31
L
Mechanical resistance
RMS
5.03
N·s/m
Surround material
Nomex Fabric
Dimensions
Nominal diameter
10
″
250
mm
Overall diameter
268
mm
Baffle cutout diameter
235
mm
Overall depth
120
mm
Flange thickness
13
mm
Mounting depth
107
mm
Volume occupied by the driver (estimated)
1.9
L
Net weight
5.0
kg
Frame material
Aluminium
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fS
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SD
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50 - 5000 Hz
QTS
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xmax
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SPL1W
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Bl/√RE
6.81
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fS
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SD
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SD
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50 - 3000 Hz
QTS
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xmax
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SPL1W
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Bl/√RE
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