DB Drive WDX12 7KD2

2x2Ω
2x4Ω

Subwoofer

12″ / 305 mm
Nominal diameter
37 Hz
Resonance
0.4
Q factor
85 dB
Sensitivity
7000 W
Program Power
Discontinued
DB Drive WDX12 7KD2 SubwooferDB Drive WDX12 7KD2 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

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Specifications

Sensitivity (1W, 1m, infinite baffle)
SPL1W
85.0
dB

Thiele & Small parameters

Resonance frequency (free air)
fS
37.5
Hz
Mechanical quality factor
QMS
7.61
Electrical quality factor
QES
0.42
Total quality factor
QTS
0.40

Large signal parameters

Power handling
P
3500
W
Program power
Pmax
7000
W

Voice Coil

Nominal impedance
Z
2 x 2
Ω
DC resistance (in series)
RE
4.0
Ω
Inductance (1kHz, in series, estimated)
LE
1.94
mH

Magnet

Force factor (in series)
Bl
27.41
N/A
Motor constant
Bl/√RE
13.7
N/√W

Diaphragm

Effective diameter
240
mm
Effective area
SD
453
cm²
Moving mass
MMS
334.4
g
Moving mass (without air load)
MMD
327.3
g

Suspensions

Stiffness
KMS
18.54
N/mm
Compliance
CMS
54
µm/N
Equivalent volume to the compliance
VAS
15.7
L
Mechanical resistance
RMS
10.35
N·s/m

Dimensions

Nominal diameter
12
″
305
mm
Volume occupied by the driver (estimated)
2.4
L
Impedance
Step response
Tone Burst
DatasheetDatasheet

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