Beyma 18WRS600
Subwoofer
18″ / 460 mm
Nominal diameter
30 Hz
Resonance
0.46
Q factor
94 dB
Sensitivity
± 8.5 mm
Linear excursion
1200 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
94.0
dB
Frequency response
35 - 1000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
30.0
Hz
Mechanical quality factor
QMS
13.80
Electrical quality factor
QES
0.48
Total quality factor
QTS
0.46
Large signal parameters
Maximum linear excursion
xmax
8.5
mm
Maximum excursion before damage
xlim
53.0
mm
Air volume displaced at xmax
VD
1067
cm³
Power handling
P
600
W
Program power
Pmax
1200
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.2
Ω
Inductance (1kHz)
LE
1.3
mH
VC Diameter
76
mm
Winding height
HVC
21.5
mm
Magnet
Force factor
Bl
19.0
N/A
Motor constant
Bl/√RE
8.33
N/√W
Air gap height
HAG
9.5
mm
Diaphragm
Effective diameter
400
mm
Effective area
SD
1255
cm²
Moving mass
MMS
178
g
Moving mass (without air load)
MMD
147.8
g
Suspensions
Stiffness
KMS
6.29
N/mm
Compliance
CMS
159
µm/N
Equivalent volume to the compliance
VAS
354
L
Mechanical resistance
RMS
2.4
N·s/m
Dimensions
Nominal diameter
18
″
460
mm
Overall diameter
457
mm
Baffle cutout diameter
425
mm
Overall depth
218
mm
Volume occupied by the driver (estimated)
5.7
L
Net weight
8.7
kg
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fS
32 Hz
SD
1159 cm²
33 - 300 Hz
QTS
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xmax
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SPL1W
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Bl/√RE
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Pmax
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fS
31 Hz
SD
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QTS
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xmax
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fS
33 Hz
SD
1159 cm²
39 - 800 Hz
QTS
0.43
xmax
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SPL1W
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Bl/√RE
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