Features
  • 4,5 - inch fiberglas Inside/Outside copper voice coil
  • 3600 Watt continuous program power handling
  • 97 dB Sensitivity
  • 30 Hz - 1 kHz Frequency range
  • Dual Forced Hyperventing System
  • Dual spider designed with silicon based damping control
  • BL of 30.5 Txm to provide a faster and accurate low frequency

Incredibly linear frequency response characteristics, the highest power handling of any comparable 18-inch transducer, the lowest power compression. The LF18X451 features a fibre loaded cone assembly along with a high excursion triple roll, constant geometry surround: this combination provides remarkable strength and a peak to peak maximum excursion of 54 mm. The new dual forced hyper-venting system guarantee a very efficient voice coil ventilation for minimum power compression and incredible power handling. A double silicon spider system ensures excellent control during large excursions. A fully optimised T-pole design generate the minimum amount of flux modulation.

Part number:

11100091
LF18X451
8ohm

Specifications
General specifications
Nominal Diameter
18 inch / 457 mm
Rated Impedance
8 ohm
Program Power (watt)
3600 W
Power handling capacity
1800 W
Sensitivity
97.0 dB
Frequency range
30 - 1000 Hz
Effective piston diameter
395 mm / 15.55 inch
Max. Excursion Before Damage
54 mm / 2.13 inch
Minimum Impedance (ohm)
6.8 ohm
Voice Coil Diameter
4.5 inch / 114 mm
Voice Coil Length
34 mm / 1.34 inch
Number of layers
2
Kind of layers
inside/outside
Top Plate Thickness
15 mm / 0.59 inch
Cone Design
Straight
Surround Design
Triple roll
Dual-force air ventilation
Yes
Thiele - small parameters
Resonance frequency (Fs)
30 Hz
DC resistance (Re) (ohm)
5.40 ohm
Mechanical factor
6.70 Qms
Electrical factor
0.29 Qes
Total factor
0.28 Qts
Bl factor (Bl) (T x m)
30.50 T x m
Effective moving mass (Mms)
260.0 g
Equivalent Cas air loaded (Vas)
220.0 liters
Effective piston area (Sd)
0.120 m2
Max. linear excursion (Xmax)
14 mm
Voice coil inductance @ 1kHz (Le1k)
1.38 mH
Half-space efficency (Eff)
1.90%
Mounting information
Overall diameter
465 mm / 18.31 inches
Bolt circle diameter
442-447 mm / 17.4-17.6 inch
Bolt hole diameter
7 mm / 0.28 inch
Front mount baffle cut-out
424 mm / 16.69 inch
Rear mount baffle cut-out
424 mm / 16.69 inch
Volume occupied by the driver
6.5 liters / 0.26 ft3
Standard compliance
Safety agency
CE compliant
Size
Height
212 mm / 8.35 inches
Diameter
465 mm / 18.31 inches
Weight
15.2 kg / 33.51 lbs
Shipping information
Package Height
254 mm / 10 inches
Package Width
524 mm / 20.63 inches
Package Depth
494 mm / 19.45 inches
Package Weight
17 kg / 37.48 lbs
Downloads
SPECIFICATIONS
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22-01-2024
DRAWINGS
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21-03-2018
ZIP
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22-01-2024