Description: Authorized Dealer!RCF LF21N451 Professional Low Frequency 21-Inch WooferFeatures4,5 - inch Inside/Outside copper voice coil3000 Watt continuous program power handling98.5 dB Sensitivity30 Hz - 1 kHz Frequency rangeDual-forced air ventilation for minimum power compressionDual spider designed with silicon based damping controlBL of 34.5 Txm to provide a faster and accurate low frequencyOverviewThe 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. The height of the voice coil has been specifically designed to improve the excursion and linearity at very low frequencies. The LF21N451 uses a special RCF developed carbon fibre + nylon + cellulose composite pulp which reinforces and improves the rigidity of the cone structure. The new pulp and the large triple roll surround along double silicon spider system ensure excellent control and makes the cone resistant to deformation caused by very large displacements and pressure created by the transducer’s high excursion behaviour. 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. GENERAL SPECIFICATIONSNominal Diameter:530 / 21 mm/inchRated Impedance:8 ΩProgram Power:3000 W AESPower handling capacity:1500 W AESSensitivity:98.5 dBFrequency Range:30 Hz ÷ 1000 HzEffective Piston Diameter:470 / 18.5 mm/inchMax Excursion Before Damage (peak to peak):58 / 2.28 mm/inchMinimum Impedance:7.1 ΩVoice Coil Diameter:115 / 4.5 mm/inchVoice Coil Material:CopperVoice Coil Winding Depth:34 / 1.33 mm/inchNumber of layers:2Kind of layer:inside / outsideTop Plate Thickness:15 / 0.6 mm/inchCone Material:No pressed pulp carbon fiber reinforcedCone Design:CurvedSurround Material:PolycottonSurround Design:Triple roll THIELE/SMALL PARAMETERSDC resistance:5.6ΩMechanical factor:6Electrical factor:0.27Total factor:0.26BL Factor:34.5 T · mEffective Moving Mass:315 gEquivalent Cas air load:375 litersEffettive piston area:0.173 m²Max. linear excursion (mathematical):13.2 mmVoice - coil inductance @ 1kHz:3.0 mHHalf-space efficiency:4.0% MOUNTING INFORMATIONOverall Diameter:547 / 21.5 mm/inchBolt Circle Diameter:527 / 20.7 mm/inchBolt Hole Diameter:6.5 / 0.25 mm/inchFront Mount Baffle Cut-out:512 / 20.1 mm/inchRear Mount Baffle Cut-out:512 / 20.1 mm/inchDepth:250 / 9.8 mm/inchVolume occupied by the driver:6.5 / 0.229 liters/ft³Net Weight:10.9 / 24 kg/lbs Thank you for shopping with us!Sweetheart Deals
Price: 899 USD
Location: Spencer, Massachusetts
End Time: 2024-02-10T16:29:06.000Z
Shipping Cost: 0 USD
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Item Specifics
Return shipping will be paid by: Buyer
All returns accepted: Returns Accepted
Item must be returned within: 60 Days
Refund will be given as: Money Back
Return policy details:
Voice Coil: Single
MPN: LF21N451
Brand: RCF
Type: Transducer
Speaker Size: 21in.
Model: LF21N451
RMS Power: 3000W
