Scan-Speak 23W/4557T00
Subwoofer
9″ / 230 mm
Nominal diameter
21 Hz
Resonance
0.47
Q factor
81 dB
Sensitivity
± 13 mm
Linear excursion
350 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
80.6
dB
Thiele & Small parameters
Resonance frequency (free air)
fS
21.0
Hz
Mechanical quality factor
QMS
4.80
Electrical quality factor
QES
0.52
Total quality factor
QTS
0.47
Large signal parameters
Maximum linear excursion
xmax
13.0
mm
Maximum excursion before damage
xlim
20.0
mm
Air volume displaced at xmax
VD
302
cm³
Power handling
P
225
W
Program power
Pmax
350
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
3.5
Ω
Inductance (1kHz)
LE
0.45
mH
VC Diameter
50
mm
Winding height
HVC
34
mm
Magnet
Force factor
Bl
9.3
N/A
Motor constant
Bl/√RE
5.01
N/√W
Air gap height
HAG
8
mm
Material
Ferrite
Diaphragm
Effective diameter
172
mm
Effective area
SD
232
cm²
Moving mass
MMS
101
g
Moving mass (without air load)
MMD
98.3
g
Material
Silver Anodized Rigid Aluminium
Suspensions
Stiffness
KMS
1.67
N/mm
Compliance
CMS
600
µm/N
Equivalent volume to the compliance
VAS
45
L
Mechanical resistance
RMS
2.71
N·s/m
Surround material
Long Throw
Dimensions
Nominal diameter
9
″
230
mm
Volume occupied by the driver (estimated)
2.0
L
Net weight
4.6
kg
Frame material
Aluminium
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10″Shallow Subwoofer
fS
22 Hz
SD
312 cm²
QTS
0.46
xmax
12.0 mm
SPL1W
82 dB
Bl/√RE
6.04
Pmax
400 W