Eminence DEFINIMAX 4015ULF-8
Subwoofer
15″ / 381 mm
Nominal diameter
38 Hz
Resonance
0.34
Q factor
94 dB
Sensitivity
± 7.3 mm
Linear excursion
2400 W
Program Power
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Specifications
Sensitivity (1w, 1m, infinite baffle)
SPL1W
93.6
dB
Frequency response
35 - 200
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
38.0
Hz
Mechanical quality factor
QMS
10.27
Electrical quality factor
QES
0.35
Total quality factor
QTS
0.34
Large signal parameters
Maximum linear excursion
xmax
7.3
mm
Maximum excursion before damage
xlim
15.5
mm
Air volume displaced at xmax
VD
625
cm³
Power handling
P
1200
W
Program power
Pmax
2400
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
6.2
Ω
Inductance (1kHz)
LE
4.43
mH
VC Diameter
102
mm
Winding material
Copper
Former material
Kapton
Magnet
Force factor
Bl
26.79
N/A
Motor constant
Bl/√RE
10.8
N/√W
Air gap height
HAG
9.5
mm
Weight
3.09
kg
Material
Ferrite
Diaphragm
Effective diameter
330
mm
Effective area
SD
856
cm²
Moving mass
MMS
173
g
Moving mass (without air load)
MMD
155.6
g
Material
Water resistant paper
Suspensions
Stiffness
KMS
10.0
N/mm
Compliance
CMS
100
µm/N
Equivalent volume to the compliance
VAS
102
L
Mechanical resistance
RMS
4.02
N·s/m
Surround material
Cloth
Dimensions
Nominal diameter
15
″
381
mm
Overall diameter
386
mm
Baffle cutout diameter
356
mm
Overall depth
167
mm
Volume occupied by the driver
4.31
L
Net weight
10.75
kg
Frame material
Die-cast aluminum
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