RCF |
LF21N451 |
LF21N451-8 |
11100043 |
Cone driver |
Sold by piece |
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Brand RCF |
Model LF21N451 |
TLHP code LF21N451-8 |
Manufacturer code 11100043 |
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Product type Cone driver |
Sales packaging Sold by Piece |
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If you want to purchase more than the quantity in stock, have a look at the supply time below :
Indicative average supply lead time: 3 weeks
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.
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 frequenc
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.
Applications :
The LF21N451 is ideal in applications where light weight,very high BL and power handling are required.
It's especially used for tourimg,perfect for powerful lows in horn loaded sub bass system or reflex designs.
General |
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Product type | Cone driver |
Brand | RCF |
Reference | LF21N451 |
Product code | 11100043 |
Informations |
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Nominal impedance | 8 ohm |
Dimensional category | 21 inch |
Frequency coverage type | Sub, Low |
Manufacturer sensitivity | 98 dB |
Calculated sensitivity | 97.59 dB |
Nominal power handling | 1500 W |
Bandwidth | 30÷1000 Hz |
Fundamental parameters |
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Sd | 1700 cm² |
Mms | 315 gr |
Le | 3 mH |
Re | 5.6 ohm |
BL | 34.5 T.m |
Small signal parameters |
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Fs | 30 Hz |
Qes | 0.27 |
Qms | 6.1 |
Qts | 0.26 |
Vas | 375 L |
Datas |
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Xmax | ±13 mm |
Calculated Xmax | ±14.5 mm |
EBP | 111 Hz |
Zmin | 7 ohm |
Fs / Qts | 115 Hz |
Vas * Qts² | 25.35 L |
Efficiency | 4 % |
Calculated efficiency | 3.6 % |
Weight | ~13.3 kg |
Dimensions |
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Voice coil diameter | 4.5 inch |
Winding depth | 34 mm |
Gap height | 15 mm |
Outside diameter | 547 mm |
Baffle cutout diameter | 508 mm |
Front thickness | 15 mm |
Depth after front | 234 mm |
Diamètre aimant (mm) | 148 mm |
Shape & Materials |
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Front chape | Cylindrical |
Magnet type | Neodymium |
Basket masterial | Aluminium |
Winding material | Copper |
Surround material | Cloth |
This system is only available for technical questions. For questions of prices, availability of products and deadline thank you to send your request by the contact page.
From RCF
From other manufacturer
This product is under manufacturer's warranty. This warranty protect you for the manufacturing defaults. The warranty does not protect for abnormal use of the product.