Eminence DELTA PRO-15A

Subwoofer

15″ / 381 mm
Nominal diameter
42 Hz
Resonance
0.4
Q factor
98 dB
Sensitivity
± 4.3 mm
Linear excursion
800 W
Program Power
Driver
Port
Combined
Frequency response
Hz
Impedance
Ω
Impedance Phase
°
Excursion
mm
Velocity
m/s
SPL
dB
Acoustical Phase
°
Group Delay
ms
Transient response
ms
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Specifications

Sensitivity (1W, 1m, infinite baffle)
SPL1W
98.1
dB
Frequency response
54 - 4200
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
42.0
Hz
Mechanical quality factor
QMS
4.73
Electrical quality factor
QES
0.44
Total quality factor
QTS
0.40

Large signal parameters

Maximum linear excursion
xmax
4.3
mm
Maximum excursion before damage
xlim
13.7
mm
Air volume displaced at xmax
VD
368
cm³
Power handling
P
400
W
Program power
Pmax
800
W

Voice Coil

Nominal impedance
Z
8
Ω
DC resistance
RE
5.7
Ω
Inductance (1kHz)
LE
0.83
mH
VC Diameter
64
mm
Winding material
Aluminum
Former material
Polyimide

Magnet

Force factor
Bl
14.5
N/A
Motor constant
Bl/√RE
6.07
N/√W
Air gap height
HAG
9.5
mm
Weight
2.268
kg
Material
Ferrite

Diaphragm

Effective diameter
330
mm
Effective area
SD
856
cm²
Moving mass
MMS
61
g
Moving mass (without air load)
MMD
43.5
g
Material
Paper

Suspensions

Stiffness
KMS
4.17
N/mm
Compliance
CMS
240
µm/N
Equivalent volume to the compliance
VAS
244
L
Mechanical resistance
RMS
3.4
N·s/m
Surround material
Cloth

Dimensions

Nominal diameter
15
381
mm
Overall diameter
389
mm
Baffle cutout diameter
356
mm
Overall depth
154
mm
Volume occupied by the driver
3.92
L
Net weight
7.71
kg
Frame material
Die-cast aluminum
Eminence DELTA PRO-15A SPL & Impedance

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