Precision Devices PD.184C01
Subwoofer
18″ / 460 mm
Nominal diameter
30 Hz
Resonance
0.23
Q factor
98 dB
Sensitivity
± 8 mm
Linear excursion
1400 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
98.4
dB
Frequency response
40 - 1000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
30.0
Hz
Mechanical quality factor
QMS
15.20
Electrical quality factor
QES
0.23
Total quality factor
QTS
0.23
Large signal parameters
Maximum linear excursion
xmax
8.0
mm
Maximum excursion before damage
xlim
16.0
mm
Air volume displaced at xmax
VD
931
cm³
Power handling
P
700
W
Program power
Pmax
1400
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
4.8
Ω
Inductance (1kHz)
LE
0.47
mH
VC Diameter
101
mm
Winding height
HVC
22
mm
Winding material
Copper
Former material
Glass Fibre
Magnet
Flux density
B
0.98
T
Force factor
Bl
25.21
N/A
Motor constant
Bl/√RE
11.5
N/√W
Air gap height
HAG
11
mm
Material
Ceramic
Diaphragm
Effective diameter
385
mm
Effective area
SD
1164
cm²
Moving mass
MMS
163.4
g
Moving mass (without air load)
MMD
134.6
g
Material
Paper
Suspensions
Stiffness
KMS
5.56
N/mm
Compliance
CMS
180
µm/N
Equivalent volume to the compliance
VAS
337
L
Mechanical resistance
RMS
2.03
N·s/m
Dimensions
Nominal diameter
18
″
460
mm
Overall diameter
474
mm
Baffle cutout diameter
416
mm
Overall depth
174
mm
Flange thickness
15
mm
Mounting depth
159
mm
Volume occupied by the driver (estimated)
6.8
L
Net weight
14.0
kg
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SpeakerbenchSimilar subwoofers to Precision Devices PD.184C01
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fS
29 Hz
SD
1218 cm²
20 - 1000 Hz
QTS
0.22
xmax
14.0 mm
SPL1W
99 dB
Bl/√RE
11
Pmax
2000 W
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18″Subwoofer
fS
29 Hz
SD
1218 cm²
20 - 1000 Hz
QTS
0.22
xmax
14.0 mm
SPL1W
98 dB
Bl/√RE
11
Pmax
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18″Woofer
fS
30 Hz
SD
1158 cm²
30 - 1000 Hz
QTS
0.24
xmax
13.0 mm
SPL1W
98 dB
Bl/√RE
11
Pmax
1400 W