DB Drive WDX15 7KD4

2x2Ω
2x4Ω

Subwoofer

15″ / 381 mm
Nominal diameter
37 Hz
Resonance
0.51
Q factor
86 dB
Sensitivity
7000 W
Program Power
Discontinued
DB Drive WDX15 7KD4 SubwooferDB Drive WDX15 7KD4 Subwoofer
Excursion
Velocity
SPL
Phase
Group delay
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
Discard
Apply
Sensitivity (1W, 1m, infinite baffle)
SPL1W
86.3
dB

Thiele & Small parameters

Resonance frequency (free air)
fS
37.5
Hz
Mechanical quality factor
QMS
7.01
Electrical quality factor
QES
0.55
Total quality factor
QTS
0.51

Large signal parameters

Power handling
P
3500
W
Program power
Pmax
7000
W

Voice Coil

Nominal impedance
Z
2 x 4
Ω
DC resistance (in series)
RE
6.8
Ω
Inductance (1kHz, in series, estimated)
LE
3.83
mH

Magnet

Force factor (in series)
Bl
31.11
N/A
Motor constant
Bl/√RE
11.9
N/√W

Diaphragm

Effective diameter
315
mm
Effective area
SD
779
cm²
Moving mass
MMS
428.2
g
Moving mass (without air load)
MMD
412.7
g

Suspensions

Stiffness
KMS
20.04
N/mm
Compliance
CMS
50
µm/N
Equivalent volume to the compliance
VAS
42.9
L
Mechanical resistance
RMS
14.38
N·s/m

Dimensions

Nominal diameter
15
″
381
mm
Volume occupied by the driver (estimated)
4.3
L
Impedance
Step response
Tone Burst
DatasheetDatasheet

Export this driver to a simulation software:

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