7.5″ / 191 mm
Nominal diameter
32 Hz
Resonance
0.28
Q factor
89 dB
Sensitivity
± 6.8 mm
Linear excursion
140 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
89.0
dB
Thiele & Small parameters
Resonance frequency (free air)
fS
32.0
Hz
Mechanical quality factor
QMS
4.11
Electrical quality factor
QES
0.30
Total quality factor
QTS
0.28
Large signal parameters
Maximum linear excursion
xmax
6.8
mm
Air volume displaced at xmax
VD
107
cm³
Power handling
P
70
W
Program power
Pmax
140
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
3.4
Ω
Inductance (1kHz)
LE
0.14
mH
VC Diameter
39
mm
Winding height
HVC
19.6
mm
Magnet
Flux density
B
1.1
T
Force factor
Bl
6.5
N/A
Motor constant
Bl/√RE
3.53
N/√W
Air gap height
HAG
6
mm
Weight
0.15
kg
Diaphragm
Effective diameter
142
mm
Effective area
SD
158
cm²
Moving mass
MMS
18.4
g
Moving mass (without air load)
MMD
16.9
g
Suspensions
Stiffness
KMS
0.74
N/mm
Compliance
CMS
1350
µm/N
Equivalent volume to the compliance
VAS
48
L
Mechanical resistance
RMS
0.9
N·s/m
Dimensions
Nominal diameter
7.5
″
191
mm
Volume occupied by the driver (estimated)
0.6
L
Net weight
1.48
kg
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Export this driver to a simulation software:
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SpeakerSim
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SpeakerbenchSimilar woofers to SB Acoustics MW19P-4
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8″Woofer
fS
33 Hz
SD
168 cm²
33 - 5000 Hz
QTS
0.25
xmax
6.0 mm
SPL1W
90 dB
Bl/√RE
3.74
Pmax
300 W