RCF LF21N401 21″ Power: 1200W rms, 2400W prog

570.00 incl. GR VAT

Only 1 left in stock (can be backordered)

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Availability: Available in 1-3 d. Available in 1-3 d. SKU: LF21N401 Category:
The LF21N401 is a high power handling and efficiency transducer specially designed to provide powerful and accurate sub-bass frequencies with low distortion and low power compression. With a fast time response, the LF21N451 uses a fiber loaded cone assembly along a large triple roll surround. This combination provides emarkable strength and control. Double silicon spider […]

 

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The LF21N401 is a high power handling and efficiency transducer specially designed to provide

powerful and accurate sub-bass frequencies with low distortion and low power compression.

With a fast time response, the LF21N451 uses a fiber loaded cone assembly along a large

triple roll surround.

This combination provides emarkable strength and control. Double silicon spider system

ensures excellentcontrol during large excursions. A fully optimized 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

  • 0 – inch Inside/Outside copper voice coil
  • 3000 Watt continuous program power handling
  • 0dB Sensitivity
  • 25Hz – 1kHz Frequency range
  • Dual-forced air ventilation for minimum power compression
  • Dual spider designed with silicon based damping control
  • BL of 27.6 T/m 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 dB
  • Frequency Range:25 Hz ÷ 1000 Hz
  • Effective Piston Diameter:470 / 18.5 mm/inch
  • Max Excursion Before Damage (peak to peak):60 / 2.36 mm/inch
  • Minimum Impedance:9 Ω
  • Voice Coil Diameter:100 / 4.0 mm/inch
  • Voice Coil Material:Copper
  • Voice Coil Winding Depth:31 / 1.22 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

  • Resonance frequency:30 Hz
  • DC resistance:0Ω
  • Mechanical factor:8
  • Electrical factor:40
  • Total factor:37
  • BL Factor:6 T · m
  • Effective Moving Mass:434318 g
  • Equivalent Cas air load:374 liters
  • Effettive piston area:122 m²
  • linear excursion (mathematical):11.4 mm
  • Voice – coil inductance @ 1kHz:7 mH
  • Half-space efficiency:50%

MOUNTING INFORMATION

  • Overall Diameter:547 / 21.5 mm/inch
  • Bolt Circle Diameter:527 / 20.7 mm/inch
  • Bolt Hole Diameter: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:219 / 8.62 mm/inch
  • Volume occupied by the driver:5 / 0.229 liters/ft³
  • Net Weight:8 / 19 kg/lbs

SHIPPING INFORMATION

Shipping weight:10 / 22 kg/lbs

Weight 8.00 kg
Woofer Inch

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Quick Comparison

RCF LF21N401 21" Power: 1200W rms, 2400W prog removeEMINENCE EOP18A Omega Pro-18 A 18" Speaker 800 W 8 Ohms - Alu Basket removeEMINENCE EDP18A Delta Pro 18 18'' 500 W 8 Ohm SPEAKER - Alu Basket removeB & C Speakers 18-PZB100 Woofer 18 inch 700WRMS 97dB removeFaital Pro FP18HP1060A Speaker High Performance Series - 18" 8 Ohm 1200W removeBMS BMS18N8504V2 18" Neodymium Speaker 18N850 1200 W 4 Ohm remove
NameRCF LF21N401 21" Power: 1200W rms, 2400W prog removeEMINENCE EOP18A Omega Pro-18 A 18" Speaker 800 W 8 Ohms - Alu Basket removeEMINENCE EDP18A Delta Pro 18 18'' 500 W 8 Ohm SPEAKER - Alu Basket removeB & C Speakers 18-PZB100 Woofer 18 inch 700WRMS 97dB removeFaital Pro FP18HP1060A Speaker High Performance Series - 18" 8 Ohm 1200W removeBMS BMS18N8504V2 18" Neodymium Speaker 18N850 1200 W 4 Ohm remove
ImageEOP18A_omega eminence pro18 800w
SKULF21N401EOP18AEDP18A18-PZB100FP18HP1060ABMS18N8504V2
Rating
Price570.00 incl. GR VAT Original price was: €454.77.Current price is: €357.67. incl. GR VAT Original price was: €395.56.Current price is: €242.72. incl. GR VAT Original price was: €399.27.Current price is: €359.00. incl. GR VAT Original price was: €729.94.Current price is: €590.33. incl. GR VAT Original price was: €1,029.85.Current price is: €875.37. incl. GR VAT
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Description
ContentThe LF21N401 is a high power handling and efficiency transducer specially designed to provide powerful and accurate sub-bass frequencies with low distortion and low power compression. With a fast time response, the LF21N451 uses a fiber loaded cone assembly along a large triple roll surround. This combination provides emarkable strength and control. Double silicon spider system ensures excellentcontrol during large excursions. A fully optimized 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
  • 0 - inch Inside/Outside copper voice coil
  • 3000 Watt continuous program power handling
  • 0dB Sensitivity
  • 25Hz - 1kHz Frequency range
  • Dual-forced air ventilation for minimum power compression
  • Dual spider designed with silicon based damping control
  • BL of 27.6 T/m 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 dB
  • Frequency Range:25 Hz ÷ 1000 Hz
  • Effective Piston Diameter:470 / 18.5 mm/inch
  • Max Excursion Before Damage (peak to peak):60 / 2.36 mm/inch
  • Minimum Impedance:9 Ω
  • Voice Coil Diameter:100 / 4.0 mm/inch
  • Voice Coil Material:Copper
  • Voice Coil Winding Depth:31 / 1.22 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
  • Resonance frequency:30 Hz
  • DC resistance:0Ω
  • Mechanical factor:8
  • Electrical factor:40
  • Total factor:37
  • BL Factor:6 T · m
  • Effective Moving Mass:434318 g
  • Equivalent Cas air load:374 liters
  • Effettive piston area:122 m²
  • linear excursion (mathematical):11.4 mm
  • Voice - coil inductance @ 1kHz:7 mH
  • Half-space efficiency:50%
MOUNTING INFORMATION
  • Overall Diameter:547 / 21.5 mm/inch
  • Bolt Circle Diameter:527 / 20.7 mm/inch
  • Bolt Hole Diameter: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:219 / 8.62 mm/inch
  • Volume occupied by the driver:5 / 0.229 liters/ft³
  • Net Weight:8 / 19 kg/lbs
SHIPPING INFORMATION Shipping weight:10 / 22 kg/lbs
OMEGA PRO-18A Professional Series Recommended for professional audio as a woofer in vented enclosures. Also ideal for horn loading and scoops.
Product type
Loudspeaker Chassis
Type
PA
Nominal Diameter
18 "
Nominal Diameter
457.2 mm
Voice Coil
4 "
Voice Coil
101.6 mm
Overall diameter
457.2 mm
Pitch Circle Diameter
438.2 mm
Cut- out Measurement
420.5 mm
Diameter of fixing holes
7.1 mm
Depth
207 mm
Nominal Impedance
8 Ohm(s)
Nominal Load Capacity
800 W
maximum rated load
1600 W
Sensitivity (1 W / 1 m)
97 dB
Frequency response
40 - 800 Hz
Voice Coil Material
copper
Magnet
Ferrite
Depth of the magnetic gap
9.53 mm
Thiele & Small Parameter
Fs (Resonance Frequency)
25 Hz
Re (DC resistance)
5.2 Ohm(s)
Qms (mechanical quality)
8.18
Le (inductance of the voice coil)
1.67 mH
Qes (electrical quality)
0.32
Qts (overall quality)
0.31
Vas (equivalent volume)
548.7
Mms (moving mass)
138 g
BL (power factor)
18.8 T/m
Xmax (maximum displacement)
4.8 mm
Cms (elasticity of the suspension)
0.29 mm/N
Sd (membrane area)
1159 cm²
Weight
12,14 kg
 
DELTA PRO Serie 400W Recommended for professional audio in both sealed and vented enclosures. Ideal for full-range, mid/hi, and monitor wedges. SPECIFICATION
  • Nominal Basket Diameter 18“, 457 mm
  • Nominal Impedance 8 ohms
  • Power Rating Watts 500 W / Music Program 1000 W
  • Resonance 28 Hz
  • Usable Frequency Range 37 Hz - 250 Hz
  • Sensitivity 96
  • Magnet Weight 67 oz.
  • Gap Height 0.38“, 9.53 mm
  • Voice Coil Diameter 2.5“, 63.5 mm
THIELE & Small Parameters
  • Resonant Frequency (fs) 28 Hz
  • DC Resistance (Re) 5.3
  • Coil Inductance (Le) 3.43 mH
  • Mechanical Q (Qms) 10.38
  • Electromagnetic Q (Qes) 0.33
  • Total Q (Qts) 0.32
  • Compliance Equivalent Volume (Vas) 493.19 liters / 17.41 cu. ft.
  • Peak Diaphragm Displacement Volume (Vd) 796.00 cc
  • Mechanical Compliance of Suspension (Cms) 0.25 mm/N
  • BL Product (BL) 18.9 T-M
  • Diaphragm Mass inc. Airload (Mms) 128.1 grams
  • Efficiency Bandwidth Product (EBP) 84
  • Maximum Linear Excursion (Xmax) 6.7 mm
  • Surface Area of Cone (Sd) 1188.0 cm²
  • Maximum Mechanical Limit (Xlim) 15.0 mm
MOUNTING Information
  • Recommended Enclosure Volume Sealed N/A Vented 85-297 liters/3.0-10.5 cu. ft.
  • Overall Diameter 18.00“, 457.20 mm
  • Baffle Hole Diameter 16.57“, 420.88 mm
  • Front Sealing Gasket fitted as standard
  • Rear Sealing Gasket fitted as standard
  • Mounting Holes Diameter 0.28“, 7.11 mm
  • Mounting Holes B.C.D. 17.25“, 438.15 mm
  • Depth 8.13“, 206.50 mm
MATERIALS of Construction
  • Copper voice coil
  • Polyimide former
  • Ferrite magnet
  • Vented and extended core
  • Die-cast aluminum basket
  • Paper Cone
  • Cloth cone edge
  • Solid composition paper dust cap
18PZB100
  • 1400 W continuous program power capacity
  • 100 mm (4 in) copper voice coil
  • 40 - 2000 Hz response
  • 97 dB sensitivity
  • Double silicone spider with optimized compliance
  • Specifications
    • Nominal diameter460 mm (18.0 in)
    • Nominal impedance8 Ω
    • Minimum impedance6.5 Ω
    • Nominal power handling *700 W
    • Continuous power handling *1400 W
    • Sensitivity (1W/1m) *97.0 dB
    • Frequency range40 - 2000 Hz
    • Voice coil diameter100 mm (4.0 in)
    • Winding materialCopper
    • Former materialGlass Fibre
    • Winding depth21 mm (0.83 in)
    • Magnetic gap depth8 mm (0.31 in)
    • Flux density1.15 T
  • Design
    • Surround shapeDouble Roll
    • Cone shapeExponential
    • Magnet materialFerrite
    • SpiderDouble Silicone
    • Pole designStraight Pole
    • Woofer cone treatmentTWP Waterproof Both Sides
    • Recommended enclosure160.0 dm3 (5.65 ft3)
    • Recommended tuning39 Hz
  • Parameters *
    • Fs30 Hz
    • Re5.3 Ω
    • Qes0.25
    • Qms8.8
    • Qts0.24
    • Vas297.0 dm3 (10.5 ft3)
    • Sd1134.0 cm2 (175.8 in2)
    • η₀3.1 %
    • Xmax8.0 mm
    • Xvar8.0 mm
    • Mms170 g
    • Bl26.0 Txm
    • Le2.1 mH
    • EBP120 Hz
  • Mounting And Shipping Info
    • Overall diameter480 mm (18.0 in)
    • Bolt circle diameter440 mm (17.3 in)
    • Baffle cutout diameter422.0 mm (16.6 in)
    • Depth202 mm (7.95 in)
    • Flange and gasket thickness16 mm (0.62 in)
    • Air volume occupied by driver9.5 dm3 (0.33 ft3)
    • Net weight12.1 kg (26.6 lb)
    • Shipping units1
    • Shipping weight14.0 kg (30.8 lb)
    • Shipping box520x520x240 mm (20.5x20.5x9.4 in)

Nominal Specifications

    Nominal Diameter 18“, 460 mm
    Overall Diameter 18.11“, 460 mm
    Bolt Circle Diameter 17.32“, 440 mm
    Baffle Cutout Diameter 16.61“, 422 mm
    Depth 7.65“, 194.3 mm
    Flange and Gasket Thickness 0.55“, 13.9 mm


Electrical Specifications

    Minimum Impedance 6.3 Ohm
    Nominal Impedance 8 Ohm
    Nominal Power Handling*** 1200 W
    Maximum Power Handling**** 2400 W
    Sensitivity (1W/1m) 98 dB
    Frequency Range 35 - 1600 Hz
    Voice Coil Diameter 4“, 100 mm
    Winding Material Kupfer
    Former Material Glass Fiber
    Winding Depth 1.14“, 28.9 mm
    Magnetic Gap Depth 0.47“, 12 mm
    Flux Density 1.22 T


THIELE & SMALL Parameters

    Resonant Frequency (fs) 35 Hz
    DC Resistance (Re) 5 Ohm
    BL Product (BL) 24.8 N/A
    Diaphragm Mass inc. Airload (Mms) 211.8 grams
    Mechanical Compliance of Suspension (Cms) 0.098 mm/N
    Rms 4.19 Kg/s
    Electromagnetic Q (Qes) 0.38
    Mechanical Q (Qms) 11.1
    Total Q (Qts) 0.37
    Compliance Equivalent Volume (Vas) 6.74 ft³, 190.8 dm³
    Surface Area of Cone (Sd) 181.97“², 1174 cm²
    Maximum Linear Excursion (Xmax)* 12.45 mm
    Xdamage** 21 mm
    Coil Inductance (Le) 1.26 mH
    Diaphragm mass (Mmd) 189.1 g
    Eta Zero 2.1 %

Notes

    *Xmax = [(winding depth - magnetic gap depth) / 2] + (magnetic gap depth / 3)
    **Maximum excursion before permanent damage
    ***2 Hours Test According to AES 2-1984 Rev. 2003
    ****Maximum power is defined as 3dB greater than nominal power

  • 95 dB Sensitivity 1 W / 1 m
  • 1.200 W Power Handling
  • 4" Copper Sandwich Voice Coil for low Power Compression
  • Neodymium Magnet System
  • Double treated Cone for Water Protection
  • Triple Aluminum demodulating Rings for ultra low Distortion
  • Optimal for high Output Subwoofers
  • Leight Weight Carbon Fiber Diaphragm
Weight8.00 kg11.25 kg7.70 kg12.00 kg7.30 kg11.50 kg
DimensionsN/AN/AN/AN/AN/AN/A
Additional information
Weight 8.00 kg
Woofer Inch

Weight 11.25 kg
Weight 7.70 kg
Weight 12.00 kg
Weight 7.30 kg
Weight 11.50 kg