18″ / 457 mm
Nominal diameter
33 Hz
Resonance
0.34
Q factor
95 dB
Sensitivity
± 7.5 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
95.2
dB
Frequency response
35 - 1000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
33.0
Hz
Mechanical quality factor
QMS
5.77
Electrical quality factor
QES
0.36
Total quality factor
QTS
0.34
Large signal parameters
Maximum linear excursion
xmax
7.5
mm
Air volume displaced at xmax
VD
848
cm³
Power handling
P
1000
W
Program power
Pmax
2000
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
6.5
Ω
Inductance (1kHz)
LE
1.99
mH
VC Diameter
102
mm
Winding height
HVC
23
mm
Former material
Glass Fibre
Magnet
Flux density
B
1.2
T
Force factor
Bl
25.9
N/A
Motor constant
Bl/√RE
10.2
N/√W
Air gap height
HAG
10
mm
Weight
3.402
kg
Diaphragm
Effective diameter
382
mm
Effective area
SD
1131
cm²
Moving mass
MMS
173
g
Moving mass (without air load)
MMD
144.6
g
Suspensions
Stiffness
KMS
7.69
N/mm
Compliance
CMS
130
µm/N
Equivalent volume to the compliance
VAS
236
L
Mechanical resistance
RMS
6.22
N·s/m
Surround material
Polyvinyl damped Poly Cotton
Dimensions
Nominal diameter
18
″
457
mm
Overall diameter
485
mm
Baffle cutout diameter
415
mm
Overall depth
205
mm
Flange thickness
12
mm
Mounting depth
193
mm
Volume occupied by the driver (estimated)
7.7
L
Net weight
14.2
kg
Frame material
Die-cast Aluminium
Similar subwoofers to Fane COLOSSUS 18XB
18″Subwoofer
fS
33 Hz
SD
1225 cm²
30 - 2500 Hz
QTS
0.32
xmax
9.5 mm
SPL1W
95 dB
Bl/√RE
11
Pmax
2400 W
18″Subwoofer
fS
34 Hz
SD
1225 cm²
30 - 2500 Hz
QTS
0.36
xmax
10.0 mm
SPL1W
95 dB
Bl/√RE
11
Pmax
2600 W
18″Subwoofer
fS
33 Hz
SD
1250 cm²
30 - 2000 Hz
QTS
0.32
xmax
8.0 mm
SPL1W
95 dB
Bl/√RE
12
Pmax
2400 W