PowerBass XL-1240DMF

2x4Ω

Subwoofer

12″ / 305 mm
Nominal diameter
35 Hz
Resonance
0.71
Q factor
91 dB
Sensitivity
± 9.5 mm
Linear excursion
500 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
Discard
Apply
Sensitivity (1W, 1m, infinite baffle)
SPL1W
90.6
dB
Frequency response
32 - 500
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
35.0
Hz
Mechanical quality factor
QMS
4.50
Electrical quality factor
QES
0.75
Total quality factor
QTS
0.71

Large signal parameters

Maximum linear excursion
xmax
9.5
mm
Air volume displaced at xmax
VD
466
cm³
Power handling
P
250
W
Program power
Pmax
500
W

Voice Coil

Nominal impedance
Z
2 x 4
Ω
DC resistance (in series)
RE
6.8
Ω
Inductance (1kHz, in series, estimated)
LE
1.72
mH
VC Diameter
51
mm

Magnet

Force factor (in series)
Bl
23.2
N/A
Motor constant
Bl/√RE
6.29
N/√W
Weight
3.97
kg

Diaphragm

Effective diameter
250
mm
Effective area
SD
491
cm²
Moving mass
MMS
117
g
Moving mass (without air load)
MMD
109.2
g
Material
Polypropylene

Suspensions

Stiffness
KMS
6.25
N/mm
Compliance
CMS
160
µm/N
Equivalent volume to the compliance
VAS
59
L
Mechanical resistance
RMS
5.72
N·s/m

Dimensions

Nominal diameter
12
305
mm
Baffle cutout diameter
279
mm
Mounting depth
142
mm
Volume occupied by the driver (estimated)
2.4
L

Export this driver to a simulation software:

WinISDWinISDBasta!Basta!HornrespHornrespQSpeakersQSpeakersSpeakerSimSpeakerSimMfbLabsMfbLabsSpeakerbenchSpeakerbench

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