Celestion PowerProX18

Low frequency

18″ / 457 mm
Nominal diameter
35 Hz
Resonance
0.38
Q factor
94 dB
Sensitivity
± 9.6 mm
Linear excursion
2400 W
Program Power
Celestion PowerProX18 Low frequencyCelestion PowerProX18 Low frequency
Impedance
Excursion
Velocity
SPL
Phase
Group delay
Step response
Tone Burst
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
93.8
dB
Frequency response
35 - 1000
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
34.8
Hz
Mechanical quality factor
QMS
3.15
Electrical quality factor
QES
0.43
Total quality factor
QTS
0.38

Large signal parameters

Maximum linear excursion
xmax
9.6
mm
Maximum excursion before damage
xlim
48.0
mm
Air volume displaced at xmax
VD
1162
cm³
Power handling
P
1200
W
Program power
Pmax
2400
W

Voice Coil

Nominal impedance
Z
8
Ω
DC resistance
RE
5.1
Ω
Inductance (1kHz)
LE
1.61
mH
VC Diameter
100
mm
Winding height
HVC
25
mm
Winding material
Round copper
Former material
Glass fibre

Magnet

Force factor
Bl
24.38
N/A
Motor constant
Bl/√RE
10.8
N/√W
Air gap height
HAG
11.75
mm
Weight
3.5
kg
Material
Ferrite

Diaphragm

Effective diameter
393
mm
Effective area
SD
1210
cm²
Moving mass
MMS
230
g
Moving mass (without air load)
MMD
200.7
g
Material
Glass loaded cellulose, water-resistant

Suspensions

Stiffness
KMS
10.99
N/mm
Compliance
CMS
91
µm/N
Equivalent volume to the compliance
VAS
189
L
Mechanical resistance
RMS
15.96
N·s/m
Surround material
Cloth-sealed

Dimensions

Nominal diameter
18
″
457
mm
Overall diameter
460
mm
Baffle cutout diameter
414
mm
Overall depth
225
mm
Flange thickness
16
mm
Mounting depth
209
mm
Volume occupied by the driver (estimated)
7.6
L
Net weight
13.2
kg
Frame material
Cast aluminium
SPL & Impedance
Stiffness
Celestion PowerProX18 SPL & Impedance
Celestion PowerProX18 Stiffness
DatasheetDatasheet

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