CF1840H 1000W 4ohm LF Ferrite

Caratteristiche

- 18" ferrite magnet, cast aluminium chassis LF driver delivering 1000Wrms (AES Standard) power handling and 98dB sensitivity

- 4" high temperature, dual layer, Inside/Outside voice coil for higher efficiency, preventing performance loss through thermal compression

- Triangulated coil reinforcement increases stiffness with no additional moving mass, thereby increasing sensitivity, while maintaining a long Xmax

- Finite element analysis optimised magnet assembly delivers remarkably low harmonic distortion and very high motor strength

- Smart chassis design minimises reflections back onto the cone, significantly reducing acoustic distortion

- Intelligent heat management in both chassis and magnet assembly design offers increased output level

Specifiche Generali

Nominal diameter: 457mm/18in

Power rating(1): 1000Wrms

Continuous power rating(2): 2000W

Nominal impedance: 4ohm

Sensitivity(3): 98dB

Frequency range: 30-2500Hz

Voice coil diameter: 100mm/4in

Chassis type: Cast aluminium

Magnet type: Ferrite

Magnet weight: 3.18kg/112oz

Coil material: Round copper

Former material: Glass fibre

Cone material: Carbon-fibre loaded paper

Surround material: Cloth sealed

Suspension: Single

Xmax(4): 8mm/0.31in

Gap depth: 9.5mm/0.37in

Voice coil winding width: 25mm/0.99in

Parametri di Thiele-Small

D: 0.38m/14.96in

Fs: 37.6Hz

Mms: 154.06g/5.44oz

Qms: 5.552

Qes: 0.385

Qts: 0.36

Re: 3.07ohm

Vas: 211.24lt/7.46ft3

BI: 17.05Tm

Cms: 0.116mm/N

Rms: 6.562kg/s

Le (at 1kHz): 0.24mH

Informazioni di Montaggio

Overall diameter: 460mm/18.11in

Overall depth: 220.35mm/8.68in

Cut-out diameter: 414mm/16.29in

Mounting slot dimensions: 12mm x 7mm/0.43in-0.28in

Number of mounting slots: 8

Mounting PCD range: 441-433mm/17.36-17.01in

Unit weight: 11.6kg/25.5lb

Note

(1)Tested for two hours using a continuous, band-limited pink noise signal as per AES standard. Power calculated on minimum impedance. Loudspeaker tested in free air.

(2)Continuous Power Handling is defined as 3dB greater than the AES rating.

(3)Measured on axis at 1W, 1m in 2pi anechoic environment.

(4)Xmax derived from: (voice coil winding width-gap depth)/2.

(5)Small signal parameters measured after unit subjected to pre-conditioning signal.

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