- 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.
- General specifications
- Nominal Diameter: 18 inch / 457 mm
- Rated Impedance: 8 ohm
- Program Power: 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
- Minimim Impedance: 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): 5.40 ohm
- Mechanical factor: 6.70 Qms
- Electrical factor (Qes): 0.29 Qes
- Total factor: 0.28 Qts
- BL factor (BL): 30.50 T x m
- Effective moving mass (Mms): 260.0 g
- Equivalent Cas air loaded (Vas): 220.0 liters
- Effettive piston area (Sd): 0.120 m2
- Max. linear excursion (Xmax): 14.0 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
- CE marking: Yes
- Size
- Weight: 15.2 kg / 33.51 lbs
- Height: 212 mm / 8.35 inches
- Diameter: 465 mm / 18.31 inches
- Shipping informations
- Package Width: 524 mm / 20.63 inches
- Package Weight: 17 kg / 37.48 lbs
- Package Height: 254 mm / 10 inches
- Package Depth: 494 mm / 19.45 inches
