15″ / 397 mm
Nominal diameter
31 Hz
Resonance
0.44
Q factor
88 dB
Sensitivity
± 34 mm
Linear excursion
5000 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
88.2
dB
Thiele & Small parameters
Resonance frequency (free air)
fS
31.4
Hz
Mechanical quality factor
QMS
5.25
Electrical quality factor
QES
0.48
Total quality factor
QTS
0.44
Large signal parameters
Maximum linear excursion
xmax
34.0
mm
Air volume displaced at xmax
VD
2873
cm³
Power handling
P
2500
W
Program power
Pmax
5000
W
Voice Coil
Nominal impedance
Z
2 x 1
Ω
DC resistance (in series)
RE
1.5
Ω
Inductance (1kHz, in series, estimated)
LE
0.8
mH
VC Diameter
81
mm
Winding material
flat aluminum
Magnet
Force factor (in series)
Bl
15.8
N/A
Motor constant
Bl/√RE
12.9
N/√W
Diameter
220
mm
Height
54
mm
Diaphragm
Effective diameter
328
mm
Effective area
SD
845
cm²
Moving mass
MMS
395
g
Moving mass (without air load)
MMD
377.4
g
Material
Paper with glass fiber
Suspensions
Stiffness
KMS
14.09
N/mm
Compliance
CMS
71
µm/N
Equivalent volume to the compliance
VAS
71.7
L
Mechanical resistance
RMS
14.84
N·s/m
Dimensions
Nominal diameter
15
″
397
mm
Overall diameter
397
mm
Baffle cutout diameter
370
mm
Mounting depth
209
mm
Volume occupied by the driver
5.0
L
Net weight
21.6
kg
Frame material
Aluminium
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SpeakerbenchSimilar subwoofers to Pride M25.15 D1
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