RCF LF18X451 18-Inch Woofer Transducer Audio Speaker 4.5" Fiberglass Inside | Outside Copper Voice Coil 1800Wrms 3600 Watt Max Dual Hypervent 8-Ohm

RCF LF18X451 18-Inch Woofer Transducer Audio Speaker 4.5" Fiberglass Inside | Outside Copper Voice Coil 1800Wrms 3600 Watt Max Dual Hypervent 8-Ohm

• 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 || Safety agency : CE compliant || SIZE || Height : 212 mm / 8.35 inches || Diameter : 465 mm / 18.31 inches || Weight : 15.2 kg / 33.51 lbs ||
• 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 ||
• SPECIFICATIONS || 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 : 3 ||
• 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 efficiency (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 || SHIPPING INFORMATION || Height : 254 mm / 10 inches || Width : 524 mm / 20.63 inches || Depth : 494 mm / 19.45 inches || Weight : 17 kg / 37.48 lbs ||