8″ / 203 mm
Nominal diameter
23 Hz
Resonance
0.33
Q factor
87 dB
Sensitivity
± 6.5 mm
Linear excursion
120 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
87.1
dB
Thiele & Small parameters
Resonance frequency (free air)
fS
23.0
Hz
Mechanical quality factor
QMS
5.40
Electrical quality factor
QES
0.35
Total quality factor
QTS
0.33
Large signal parameters
Maximum linear excursion
xmax
6.5
mm
Air volume displaced at xmax
VD
140
cm³
Power handling
P
60
W
Program power
Pmax
120
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
3.3
Ω
Inductance (1kHz)
LE
0.27
mH
VC Diameter
46
mm
Winding height
HVC
19
mm
Magnet
Flux density
B
0.86
T
Force factor
Bl
6.7
N/A
Motor constant
Bl/√RE
3.69
N/√W
Air gap height
HAG
6
mm
Weight
0.8
kg
Diaphragm
Effective diameter
166
mm
Effective area
SD
216
cm²
Moving mass
MMS
32
g
Moving mass (without air load)
MMD
29.7
g
Suspensions
Stiffness
KMS
0.69
N/mm
Compliance
CMS
1450
µm/N
Equivalent volume to the compliance
VAS
95
L
Mechanical resistance
RMS
0.9
N·s/m
Dimensions
Nominal diameter
8
″
203
mm
Volume occupied by the driver (estimated)
1.1
L
Net weight
2.7
kg
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Export this driver to a simulation software:
WinISD
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Hornresp
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SpeakerSim
MfbLabs
SpeakerbenchSimilar woofers to SB Acoustics SB23NACS45-4
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10″Woofer
fS
23 Hz
SD
346 cm²
23 - 6000 Hz
QTS
0.32
xmax
6.0 mm
SPL1W
87 dB
Bl/√RE
4.99
Pmax
200 W