Celestion - CF18VJD 1600W 4ohm LF Ferrite

Celestion - CF18VJD 1600W 4ohm - LF Die Cast Chassis Loudspeaker - Ferrite

Features

- 18" ferrite magnet, cast aluminium chassis LF driver delivering 1600Wrms (AES Standard) power handling and 97dB sensitivity
- 5" high temperature, dual layer, Inside/Outside voice coil for higher efficiency, preventing sensitivity loss through thermal compression
- FEA optimized magnet assembly delivers highly symmetrical cone - movement, leading to exceptionally low harmonic distortion
- Vented front plate increases airflow to provide enhanced cooling
- Twin demodulation rings reduce flux modulation, minimizing electromagnetic distortion
- Double suspension and "multi-roll" surround provide exceptional linearity at extremes of cone excursion

General Specifications

Nominal diameter: 460mm/18in
Power rating(1): 1600Wrms
Nominal impedance: 4ohm
Sensitivity(2): 97dB
Frequency range: 25Hz-1500Hz
Voice coil diameter: 125mm/5in
Chassis type: Cast aluminium
Magnet type: Ferrite
Coil material: Round copper
Former material: Glass fibre
Cone material: Carbon and Kevlar loaded paper
Surround material: Cloth sealed
Suspension: Double
Gap depth: 12mm/0.47in
Voice coil winding width: 30mm/1.18in
Xmax(3): 9mm/0.35in

Small Signal Parameters

D: 0.38m/14.96in
Fs: 34.3Hz
Mms: 259.72g/9.16oz
Qms: 5.152
Qes: 0.360
Mmd: 238.11g/8.39oz
Qts: 0.336
Re: 5.98ohm
Vas: 150.58lt/5.32ft3
BI: 30.52Tm
Cms: 0.083mm/N
Rms: 10.88kg/s
Le (at 1kHz): 1.48mH

Mounting Information

Overall diameter: 462mm/18.19in
Overall depth: 233mm/9.17in
Cut-out diameter: 416mm/16.38in
Mounting slot dimensions: 11mm x 7mm/0.43in x 0.28in
Number of mounting slots: 8
Mounting PCD range: 432-441mm/17.0-17.36in
Unit weight: 23kg/50.6lb

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)Measured on axis at 1W, 1m in 2pi anechoic environment.
(3)Xmax derived from: (voice coil winding width-gap depth)/2.