Ready to ship
55.000 Products
55.000 products
ready for shipment
Money Back
30 Day Return Policy
You have placed the following items into your shopping cart
Ready to ship
55.000 Products
55.000 products
ready for shipment
Money Back
30 Day Return Policy
The LF21N451 is a very high power handling and efficiency transducer specially designed to provide powerful and accurate sub-bass frequencies with low distortion and low power compression. Ultra fast time response. The LF21N451 uses a fibre loaded cone assembly along a large triple roll surround, this combination provides remarkable strength and control. Double silicon spider system ensures excellent control during large excursions. A fully optimised T-pole design generate the minimum amount of flux modulation. The Dual-forced air venting system provides a very efficient voice coil ventilation to minimize the power compression.
Features: 4,5 - inch Inside/Outside copper voice coil 3000 Watt continuous program power handling 98.5dB Sensitivity 30Hz - 1kHz Frequency range Dual-forced air ventilation for minimum power compression Dual spider designed with silicon based damping control BL of 34.5 T/m to provide a faster and accurate low frequency
Specifications: Nominal Diameter: 530 / 21 mm/inch Rated Impedance: 8 Ohm 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 Ohm 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: 5.6 Ohm 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
RCF LF21N451, Woofer 21", 1500 Watt RMS / 8 Ohm
