Eminence BETA-15A
Woofer
15″ / 381 mm
Nominal diameter
35 Hz
Resonance
0.58
Q factor
95 dB
Sensitivity
± 4 mm
Linear excursion
600 W
Program Power
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Specifications
Sensitivity (1w, 1m, infinite baffle)
SPL1W
94.6
dB
Frequency response
45 - 3700
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
35.0
Hz
Mechanical quality factor
QMS
8.10
Electrical quality factor
QES
0.63
Total quality factor
QTS
0.58
Large signal parameters
Maximum linear excursion
xmax
4.0
mm
Maximum excursion before damage
xlim
11.6
mm
Air volume displaced at xmax
VD
330
cm³
Power handling
P
300
W
Program power
Pmax
600
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
6.3
Ω
Inductance (1kHz)
LE
1.1
mH
VC Diameter
51
mm
Winding material
Copper
Former material
Polyimide
Magnet
Force factor
Bl
11.5
N/A
Motor constant
Bl/√RE
4.57
N/√W
Air gap height
HAG
7.9
mm
Weight
0.964
kg
Material
Ferrite
Diaphragm
Effective diameter
324
mm
Effective area
SD
824
cm²
Moving mass
MMS
60
g
Moving mass (without air load)
MMD
43.4
g
Material
Paper
Suspensions
Stiffness
KMS
2.86
N/mm
Compliance
CMS
350
µm/N
Equivalent volume to the compliance
VAS
335
L
Mechanical resistance
RMS
1.63
N·s/m
Surround material
Cloth
Dimensions
Nominal diameter
15
″
381
mm
Overall diameter
385
mm
Baffle cutout diameter
352
mm
Overall depth
154
mm
Volume occupied by the driver
3.33
L
Net weight
3.99
kg
Frame material
Pressed steel
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