RCF LF18X401 18-inch, 3000W, 8 Ohm Bass Woofer

• nominal diameter: 18"/457mm
• nominal impedance: 8 Ohms
• program power: 3,000W
• output capacity: 1,500W
• sensitivity: 97.5dB
• frequency range: 25Hz - 1000Hz
• effective piston diameter: 395mm/15.55"
• max. damage excursion: 50mm/1.97"
• minimum impedance: 6.5
• voice-coil diameter: 4.0"/102mm
• voice-coil material: copper
• voice-coil length: 30mm/1.18"
• number of layers: 2
• layer sort: interior, exterior
• upper plate depth: 15mm (0.59")
• cone design: straight
• surround material: polycotton
• surround design: three-double role
• magnet: ceramic
• air ventilation with double power: yes
• spin: double with silicon based damping treatment

Thiele & Small

• resonant frequency (Fs): 30 Hz
• DC impedance (Re): 5.4 Ohms
• mechanical factor: 7.4 Qms
• electrical factor: 0.31 Qes
• total factor: 0.30 Qts
• Bl-factor (Bl): 26.5 T x M
• effective moving mass (Mms): 215g
• equivalent Cas air-loaded (Vas): 274 litres
• effective piston surface (Sd): 0.120 m2
• max. linear excursion (Xmax): 12mm
• voice-coil induction @ 1kHz (Le1k): 0.83 mH
• efficient at half space (Eff): 2.3%

mounting information

• total diameter: 465mm / 18.31"
• bolt circle diameter: 442-447mm / 17.4-17.6"
• bolt hole diameter: 7mm
• front mount bulkhead recess: 424mm / 16.69"
• rear mount bulkhead recess: 425mm / 16.73"
• driver volume: 6.5 litres / 0.22 ft3

dimensions and weight

• dimensions (diameter x height): 46.5 x 19.6cm
• weight: 12.5 kg