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PRECISION TRANSDUCERS

LF18X451

WOOFER
  • 4,5 - inch fiberglas Inside/Outside copper voice coil
  • 3600 Watt continuous program power handling
  • 97 dB Sensitivity
  • 30 Hz - 1 kHz Frequency range
Where to buy
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 Winding Material:
Copper
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 Material:
Polycotton
Surround Design:
Triple roll
Magnets:
Ceramic
Dual-force air ventilation:
Yes
Spider:
Dual with silicon based damping control
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
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
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RCF products are continually improved. All specifications are therefore subject to change without notice.