6.5″ / 180 mm
Nominal diameter
47 Hz
Resonance
0.35
Q factor
90 dB
Sensitivity
± 4.3 mm
Linear excursion
170 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
89.5
dB
Thiele & Small parameters
Resonance frequency (free air)
fS
47.0
Hz
Mechanical quality factor
QMS
7.81
Electrical quality factor
QES
0.37
Total quality factor
QTS
0.35
Large signal parameters
Maximum linear excursion
xmax
4.3
mm
Maximum excursion before damage
xlim
8.0
mm
Air volume displaced at xmax
VD
59
cm³
Power handling
P
55
W
Program power
Pmax
170
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
3.0
Ω
Inductance (1kHz)
LE
0.39
mH
VC Diameter
32
mm
Winding height
HVC
13.6
mm
Magnet
Force factor
Bl
6.0
N/A
Motor constant
Bl/√RE
3.46
N/√W
Air gap height
HAG
5
mm
Material
Ferrite
Diaphragm
Effective diameter
132
mm
Effective area
SD
137
cm²
Moving mass
MMS
14.4
g
Moving mass (without air load)
MMD
13.2
g
Material
Coated NRSC Fibre Glass
Suspensions
Stiffness
KMS
1.27
N/mm
Compliance
CMS
790
µm/N
Equivalent volume to the compliance
VAS
20.7
L
Mechanical resistance
RMS
0.55
N·s/m
Surround material
SBR Rubber
Dimensions
Nominal diameter
6.5
″
180
mm
Volume occupied by the driver (estimated)
0.52
L
Net weight
1.3
kg
Frame material
Aluminium
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Export this driver to a simulation software:
WinISD
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QSpeakers
SpeakerSim
MfbLabs
SpeakerbenchSimilar woofers to Scan-Speak 18W/4434G00
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8″Woofer
fS
42 Hz
SD
228 cm²
50 - 6300 Hz
QTS
0.34
xmax
7.3 mm
SPL1W
89 dB
Bl/√RE
5.65
Pmax
600 W