Celestion LF Cast Chassis Ferrite CF1830E

* 18" ferrite magnet, cast aluminium chassis LF driver delivering 700Wrms (AES Standard) power handling and 94dB sensitivity

* 3" high temperature, multi- layer voice coil for greater motor force

* FEA optimized magnet assembly delivers highly symmetrical cone - movement, leading to exceptionally low harmonic distortion

* Balanced Airflow Venting (BAV) on the front-plate increases airflow to provide enhanced cooling

* Dual Magnet Motor (DMM) incorporates a secondary magnet used to increase overal motor force (Bl) without the need for any additional increase in magnet size

* "Multi-roll" surround provides 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.



* Nominal diameter 457mm/18in

* Power rating (1) 700Wrms

* Nominal impedance 8 Ohm

* Sensitivity (2) 94dB

* Frequency range 30-2500Hz

* Voice coil diameter 75mm/3in

* Chassis type Cast Aluminium

* Magnet type Ferrite

* Coil material Round Copper

* Former material Glass Fibre

* Cone materialGlass-Reinforced Paper

* Surround material Cloth-sealed

* Suspension Single

* Xmax (3) 5mm/0.79in

* Gap depth 8mm/0.31in

* Voice coil winding width 18mm/0.71in

Small Signal Parameters

* D 0.38m/14.96in

* Fs 40.5Hz

* Mms 167.47g/5.91oz

* Qms 4.367

* Qes 0.371

* Mmd 145.86g/5.15oz

* Qts 0.343

* Re 5.27Ohm

* Vas 167.92lt/5.93ft3

* BI 24.6Tm

* Cms 0.092mm/N

* Rms 9.33kg/s

* Le (at 1kHz) 3.24mH

Mounting Information

* Diameter 460mm/18.11in

* Overall depth 211.3mm/8.31in

* Cut-out diameter 414mm/16.29in

* Mounting slot dimensions 9.25x7mm/0.36x0.28in

* Number of mounting slots 8

* Mounting slot PCD 432-441mm/17.0-17.36in