18″ / 457 mm
Nominal diameter
39 Hz
Resonance
0.47
Q factor
94 dB
Sensitivity
± 8 mm
Linear excursion
2000 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
Sensitivity (1w, 1m, infinite baffle)
SPL1W
94.3
dB
Frequency response
25 - 2000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
39.2
Hz
Mechanical quality factor
QMS
4.57
Electrical quality factor
QES
0.49
Total quality factor
QTS
0.47
Large signal parameters
Maximum linear excursion
xmax
8.0
mm
Air volume displaced at xmax
VD
931
cm³
Power handling
P
1000
W
Program power
Pmax
2000
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
6.1
Ω
Inductance (1kHz)
LE
2.44
mH
VC Diameter
102
mm
Magnet
Force factor
Bl
23.53
N/A
Motor constant
Bl/√RE
9.53
N/√W
Diaphragm
Effective diameter
385
mm
Effective area
SD
1164
cm²
Moving mass
MMS
185.1
g
Moving mass (without air load)
MMD
157.2
g
Suspensions
Stiffness
KMS
11.24
N/mm
Compliance
CMS
89
µm/N
Equivalent volume to the compliance
VAS
172
L
Mechanical resistance
RMS
9.98
N·s/m
Dimensions
Nominal diameter
18
″
457
mm
Volume occupied by the driver (estimated)
6.9
L
Frame material
Injected Aluminum
Similar subwoofers to D.A.S. Audio 18SX
18″Low frequency
fS
39 Hz
SD
1134 cm²
30 - 2500 Hz
QTS
0.43
xmax
10.1 mm
SPL1W
95 dB
Bl/√RE
9.52
Pmax
2000 W
18″Subwoofer
fS
38 Hz
SD
1225 cm²
40 - 1000 Hz
QTS
0.46
xmax
8.4 mm
SPL1W
94 dB
Bl/√RE
11
Pmax
2400 W
18″Low frequency
fS
36 Hz
SD
1134 cm²
35 - 1000 Hz
QTS
0.39
xmax
4.5 mm
SPL1W
94 dB
Bl/√RE
9.62
Pmax
1000 W