ESX SX1240
Subwoofer
12″ / 300 mm
Nominal diameter
28 Hz
Resonance
0.35
Q factor
88 dB
Sensitivity
± 8.5 mm
Linear excursion
1000 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
88.1
dB
Thiele & Small parameters
Resonance frequency (free air)
fS
28.0
Hz
Mechanical quality factor
QMS
5.30
Electrical quality factor
QES
0.37
Total quality factor
QTS
0.35
Large signal parameters
Maximum linear excursion
xmax
8.5
mm
Maximum excursion before damage
xlim
16.0
mm
Air volume displaced at xmax
VD
429
cm³
Power handling
P
500
W
Program power
Pmax
1000
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
3.2
Ω
Inductance (1kHz)
LE
1.1
mH
VC Diameter
50
mm
Winding height
HVC
25
mm
Former material
Aluminium
Magnet
Force factor
Bl
14.0
N/A
Motor constant
Bl/√RE
7.83
N/√W
Diameter
156
mm
Height
40
mm
Weight
2.835
kg
Diaphragm
Effective diameter
254
mm
Effective area
SD
505
cm²
Moving mass
MMS
142
g
Moving mass (without air load)
MMD
133.7
g
Material
Non-pressed Paper
Suspensions
Stiffness
KMS
4.46
N/mm
Compliance
CMS
224
µm/N
Equivalent volume to the compliance
VAS
81
L
Mechanical resistance
RMS
4.71
N·s/m
Surround material
Rubber
Spider material
Single Nomex
Dimensions
Nominal diameter
12
″
300
mm
Overall diameter
315
mm
Baffle cutout diameter
282
mm
Mounting depth
140
mm
Volume occupied by the driver (estimated)
3.7
L
Net weight
8.2
kg
Frame material
Diecast Aluminium
Export this driver to a simulation software:
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SpeakerbenchSimilar subwoofers to ESX SX1240
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fS
25 Hz
SD
500 cm²
25 - 13000 Hz
QTS
0.38
xmax
12.0 mm
SPL1W
88 dB
Bl/√RE
7.59
Pmax
600 W
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fS
29 Hz
SD
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29 - 450 Hz
QTS
0.40
xmax
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SPL1W
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Bl/√RE
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