12″ / 305 mm
Nominal diameter
45 Hz
Resonance
0.39
Q factor
96 dB
Sensitivity
± 5.2 mm
Linear excursion
900 W
Program Power
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Sensitivity (1W, 1m, infinite baffle)
SPL1W
96.4
dB
Frequency response
45 - 3800
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
45.0
Hz
Mechanical quality factor
QMS
7.97
Electrical quality factor
QES
0.41
Total quality factor
QTS
0.39
Large signal parameters
Maximum linear excursion
xmax
5.2
mm
Maximum excursion before damage
xlim
13.7
mm
Air volume displaced at xmax
VD
277
cm³
Power handling
P
450
W
Program power
Pmax
900
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
3.7
Ω
Inductance (1kHz)
LE
0.45
mH
VC Diameter
64
mm
Winding material
Aluminum
Former material
Polyimide
Magnet
Force factor
Bl
9.51
N/A
Motor constant
Bl/√RE
4.98
N/√W
Air gap height
HAG
7.9
mm
Weight
1.588
kg
Material
Ferrite
Diaphragm
Effective diameter
260
mm
Effective area
SD
532
cm²
Moving mass
MMS
36
g
Moving mass (without air load)
MMD
27.2
g
Material
Paper
Suspensions
Stiffness
KMS
2.86
N/mm
Compliance
CMS
350
µm/N
Equivalent volume to the compliance
VAS
138
L
Mechanical resistance
RMS
1.28
N·s/m
Surround material
Cloth
Dimensions
Nominal diameter
12
″
305
mm
Overall diameter
315
mm
Baffle cutout diameter
281
mm
Overall depth
140
mm
Volume occupied by the driver
2.25
L
Net weight
5.31
kg
Frame material
Die-cast aluminum
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SpeakerbenchSimilar subwoofers to Eminence DELTA PRO 12-450-4
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12″Woofer
fS
44 Hz
SD
532 cm²
44 - 4000 Hz
QTS
0.37
xmax
5.1 mm
SPL1W
97 dB
Bl/√RE
5.11
Pmax
750 W
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15″Low frequency
fS
47 Hz
SD
855 cm²
40 - 4000 Hz
QTS
0.41
xmax
4.8 mm
SPL1W
98 dB
Bl/√RE
7.94
Pmax
1100 W
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15″Woofer
fS
44 Hz
SD
881 cm²
40 - 3000 Hz
QTS
0.39
xmax
7.0 mm
SPL1W
96 dB
Bl/√RE
8.38
Pmax
1000 W