RCF LF21N451 WOOFER

Features

4,5 - inch Inside/Outside copper voice coil

3000 Watt continuous program power handling

98.5 dB Sensitivity

30 Hz - 1 kHz Frequency range

Dual-forced air ventilation for minimum power compression

Dual spider designed with silicon based damping control

BL of 34.5 Txm to provide a faster and accurate low frequency

General Specifications

Nominal Diameter: 530 / 21 mm/inch

Rated Impedance: 8 Ω

Program Power: 3000 W AES

Power handling capacity: 1500 W AES

Sensitivity: 98.5 dB

Frequency Range: 30 Hz ÷ 1000 Hz

Effective Piston Diameter: 470 / 18.5 mm/inch

Max Excursion Before Damage (peak to peak): 58 / 2.28 mm/inch

Minimum Impedance: 7.1 Ω

Voice Coil Diameter: 115 / 4.5 mm/inch

Voice Coil Material: Copper

Voice Coil Winding Depth: 34 / 1.33 mm/inch

Number of layers: 2

Kind of layer: inside / outside

Top Plate Thickness: 15 / 0.6 mm/inch

Cone Material: No pressed pulp carbon fiber reinforced

Cone Design: Curved

Surround Material: Polycotton

Surround Design: Triple roll

Thiele/Small Parameters

DC resistance: 5.6Ω

Mechanical factor: 6

Electrical factor: 0.27

Total factor: 0.26

BL Factor: 34.5 T · m

Effective Moving Mass: 315 g

Equivalent Cas air load: 375 liters

Effettive piston area: 0.173 m²

Max. linear excursion (mathematical): 13.2 mm

Voice - coil inductance @ 1kHz: 3.0 mH

Half-space efficiency: 4.0%

Mounting information

Overall Diameter: 547 / 21.5 mm/inch

Bolt Circle Diameter: 527 / 20.7 mm/inch

Bolt Hole Diameter: 6.5 / 0.25 mm/inch

Front Mount Baffle Cut-out: 512 / 20.1 mm/inch

Rear Mount Baffle Cut-out: 512 / 20.1 mm/inch

Depth: 250 / 9.8 mm/inch

Volume occupied by the driver: 6.5 / 0.229 liters/ft³

Net Weight: 10.9 / 24 kg/lbs

Shipping information

Shipping weight: 12.1 / 26.6 kg/lbs