RCF LF21X451 21-inch, 4000W, 8 Ohm Bass Woofer
RCF
Bargain Buy
Specifications
Product features
- Sustainable product
- Not specified
- Type of speaker
- Subwoofer
- Minimum frequency
- 25 - 29 Hz
- Maximum frequency
- 1 - 4.9 kHz
- RMS capacity in watts
- 1,500 - 3,000 W
- Peak power in watts
- > 3,000 watts
- Sensitivity
- 97 dB
- Nominal impedance
- 8 ohms
- Type of magnet
- Ceramic
- Weight per speaker
- 16 kg
- Installation depth
- 240 - 249 mm
Weight and dimensions including packaging
- Weight
- 18,5 kg
- Dimensions
- 60,4 x 58,4 x 28,4 cm
Product specifications
- nominal diameter: 21"/533mm
- nominal impedance: 8 Ohms
- program power: 4,000W
- output capacity: 2,000W
- sensitivity: 97.0dB
- frequency range: 28Hz - 1000Hz
- effective piston diameter: 470mm/18.5"
- max. damage excursion: 54mm/2.13"
- minimum impedance: 6.7
- voice-coil diameter: 4.5"/114mm
- voice-coil material: copper
- voice-coil length: 34mm/1.34"
- number of layers: 2
- layer sort: interior, exterior
- upper plate depth: 15mm (0.59")
- cone design: curved
- surround material: polycotton
- surround design: three-double role
- magnet: ceramic
- air ventilation with double power: yes
- spin: double with silicon based damping treatment
Thiele & Small
- resonant frequency (Fs): 28 Hz
- DC impedance (Re): 5.40 Ohms
- mechanical factor: 6.90 Qms
- electrical factor: 0.39 Qes
- total factor: 0.37 Qts
- Bl-factor (Bl): 30.50 T x M
- effective moving mass (Mms): 355.0g
- equivalent Cas air-loaded (Vas): 385.0 litres
- effective piston surface (Sd): 0.170 m2
- max. linear excursion (Xmax): 14mm
- voice-coil induction @ 1kHz (Le1k): 2.90 mH
- efficient at half space (Eff): 2.20%
mounting information
- total diameter: 547mm / 21.54"
- bolt circle diameter: 527mm / 20.75"
- bolt hole diameter: 7mm
- front mount bulkhead recess: 512mm / 20.16"
- rear mount bulkhead recess: 512mm / 20.16"
- driver volume: 6.5 litres / 0.26 ft3
dimensions and weight
- dimensions (diameter x height): 54.7 x 24.5cm
- weight: 15.5 kg
Recommended price £638
-19%
£515
incl. 20% VAT
Online stock status:
Order now and receive delivery within approx. 3 weeks
£25.75 one-time fee
Specifications
Product features
- Sustainable product
- Not specified
- Type of speaker
- Subwoofer
- Minimum frequency
- 25 - 29 Hz
- Maximum frequency
- 1 - 4.9 kHz
- RMS capacity in watts
- 1,500 - 3,000 W
- Peak power in watts
- > 3,000 watts
- Sensitivity
- 97 dB
- Nominal impedance
- 8 ohms
- Type of magnet
- Ceramic
- Weight per speaker
- 16 kg
- Installation depth
- 240 - 249 mm
Weight and dimensions including packaging
- Weight
- 18,5 kg
- Dimensions
- 60,4 x 58,4 x 28,4 cm
Product specifications
- nominal diameter: 21"/533mm
- nominal impedance: 8 Ohms
- program power: 4,000W
- output capacity: 2,000W
- sensitivity: 97.0dB
- frequency range: 28Hz - 1000Hz
- effective piston diameter: 470mm/18.5"
- max. damage excursion: 54mm/2.13"
- minimum impedance: 6.7
- voice-coil diameter: 4.5"/114mm
- voice-coil material: copper
- voice-coil length: 34mm/1.34"
- number of layers: 2
- layer sort: interior, exterior
- upper plate depth: 15mm (0.59")
- cone design: curved
- surround material: polycotton
- surround design: three-double role
- magnet: ceramic
- air ventilation with double power: yes
- spin: double with silicon based damping treatment
Thiele & Small
- resonant frequency (Fs): 28 Hz
- DC impedance (Re): 5.40 Ohms
- mechanical factor: 6.90 Qms
- electrical factor: 0.39 Qes
- total factor: 0.37 Qts
- Bl-factor (Bl): 30.50 T x M
- effective moving mass (Mms): 355.0g
- equivalent Cas air-loaded (Vas): 385.0 litres
- effective piston surface (Sd): 0.170 m2
- max. linear excursion (Xmax): 14mm
- voice-coil induction @ 1kHz (Le1k): 2.90 mH
- efficient at half space (Eff): 2.20%
mounting information
- total diameter: 547mm / 21.54"
- bolt circle diameter: 527mm / 20.75"
- bolt hole diameter: 7mm
- front mount bulkhead recess: 512mm / 20.16"
- rear mount bulkhead recess: 512mm / 20.16"
- driver volume: 6.5 litres / 0.26 ft3
dimensions and weight
- dimensions (diameter x height): 54.7 x 24.5cm
- weight: 15.5 kg
Product information
Product no: 9000-0106-1524
General
The incredibly advanced RCF LF21X451 LF-driver has an extreme linear response and an impressive level of resilience. This 21 inch bass woofer features an 8 Ohm impedance and 4,000 Watt program power handling. For full technical details, see the specifications below.
Service promise
Bax Music Warranty This product comes with a 3-year warranty.
This product comes with a 3-year warranty.
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