Radian 2218Neo

Subwoofer

18″ / 460 mm
Nominal diameter
30 Hz
Resonance
0.23
Q factor
96 dB
Sensitivity
± 9 mm
Linear excursion
1600 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
Discard
Apply
Sensitivity (1W, 1m, infinite baffle)
SPL1W
95.9
dB
Frequency response
25 - 2000
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
30.0
Hz
Mechanical quality factor
QMS
3.20
Electrical quality factor
QES
0.25
Total quality factor
QTS
0.23

Large signal parameters

Maximum linear excursion
xmax
9.0
mm
Air volume displaced at xmax
VD
1188
cm³
Power handling
P
800
W
Program power
Pmax
1600
W

Voice Coil

Nominal impedance
Z
8
Ω
DC resistance
RE
5.4
Ω
Inductance (1kHz)
LE
1.12
mH
VC Diameter
102
mm
Winding height
HVC
23
mm
Winding material
Aluminum
Former material
Fiberglass

Magnet

Force factor
Bl
33.0
N/A
Motor constant
Bl/√RE
14.2
N/√W
Air gap height
HAG
10
mm
Material
Neodymium

Diaphragm

Effective diameter
410
mm
Effective area
SD
1320
cm²
Moving mass
MMS
266
g
Moving mass (without air load)
MMD
233.8
g
Material
Paper/Kevlar fiber composite

Suspensions

Stiffness
KMS
8.33
N/mm
Compliance
CMS
120
µm/N
Equivalent volume to the compliance
VAS
312
L
Mechanical resistance
RMS
15.67
N·s/m

Dimensions

Nominal diameter
18
460
mm
Overall diameter
464
mm
Baffle cutout diameter
429
mm
Overall depth
181
mm
Volume occupied by the driver (estimated)
4.8
L
Net weight
8.0
kg
Frame material
Cast Aluminum
Radian 2218Neo SPL & Impedance
Radian 2218Neo Dimensions

Export this driver to a simulation software:

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