Celestion LF Cast Chassis Ferrite CF18VJD

* 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

8 Ohm Frequency Response

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 2p anechoic environment.

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

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General

* Nominal diameter 460mm/18in

* Power rating (1) 1600Wrms

* Nominal impedance 8 ohm

* 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 materialCarbon and Kevlar loaded paper

* Surround material Cloth sealed

* Suspension Double

* Xmax (3) 9mm/0.35in

* Gap depth 12mm/0.47in

* Voice coil winding width 30mm/1.18in

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 5.98O

* Vas 150.58lt/5.32ft3

* BI 30.52Tm

* Cms 0.083mm/N

* Rms 10.88kg/s

* Le (at 1kHz) 1.48mH

Mounting Information

* 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