RCF LF18X451
Subwoofer
18″ / 457 mm
Nominal diameter
30 Hz
Resonance
0.28
Q factor
95 dB
Sensitivity
± 14 mm
Linear excursion
3600 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
94.6
dB
Frequency response
30 - 1000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
30.0
Hz
Mechanical quality factor
QMS
6.70
Electrical quality factor
QES
0.29
Total quality factor
QTS
0.28
Large signal parameters
Maximum linear excursion
xmax
14.0
mm
Maximum excursion before damage
xlim
27.0
mm
Air volume displaced at xmax
VD
1680
cm³
Power handling
P
1800
W
Program power
Pmax
3600
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.4
Ω
Inductance (1kHz)
LE
1.38
mH
VC Diameter
114
mm
Winding height
HVC
34
mm
Winding material
Copper
Magnet
Force factor
Bl
30.5
N/A
Motor constant
Bl/√RE
13.1
N/√W
Air gap height
HAG
15
mm
Diaphragm
Effective diameter
395
mm
Effective area
SD
1200
cm²
Moving mass
MMS
260
g
Moving mass (without air load)
MMD
230.7
g
Suspensions
Stiffness
KMS
9.43
N/mm
Compliance
CMS
106
µm/N
Equivalent volume to the compliance
VAS
220
L
Mechanical resistance
RMS
7.31
N·s/m
Spider material
with silicon damping
Dimensions
Nominal diameter
18
″
457
mm
Overall diameter
465
mm
Baffle cutout diameter
424
mm
Overall depth
212
mm
Volume occupied by the driver
6.5
L
Net weight
15.2
kg
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Export this driver to a simulation software:
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QSpeakers
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SpeakerbenchSimilar subwoofers to RCF LF18X451
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18″Woofer
fS
33 Hz
SD
1158 cm²
35 - 1000 Hz
QTS
0.28
xmax
12.5 mm
SPL1W
95 dB
Bl/√RE
13
Pmax
3200 W
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18″Subwoofer
fS
28 Hz
SD
1213 cm²
30 - 1600 Hz
QTS
0.27
xmax
16.3 mm
SPL1W
94 dB
Bl/√RE
13
Pmax
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18″Subwoofer
fS
32 Hz
SD
1210 cm²
35 - 1500 Hz
QTS
0.30
xmax
14.0 mm
SPL1W
94 dB
Bl/√RE
13
Pmax
3400 W