Celestion LF Cast Chassis Ferrite FTR18-4080HDX

* 18" ferrite subwoofer provides 1000Wrms (AES standard) power handling and a frequency response of 30Hz-2500Hz

* 4" high temperature Inside/Outside voice coil efficiently dissipates heat, preventing sensitivity loss through thermal compression

* Double suspension and a “multi-roll” surround provide exceptional linearity at extremes of cone excursion

* Intelligent heat management in both chassis and magnet assembly design further minimizes distortion

* Less than 10kg – very low weight for this product class

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.

4. Small signal parameters measured after unit subjected to pre-conditioning signal.

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General

* Nominal diameter 457mm/18in

* Power rating (1) 1000Wrms

* Nominal impedance 8 Ohm

* Sensitivity (2) 95dB

* Frequency range 30-2500Hz

* Voice coil diameter 100mm/4in

* Chassis type Cast aluminium

* Magnet type Ferrite

* Magnet weight 3.1kg/110oz

* Coil material Round copper

* Former material Glass Fibre

* Cone material Glass loaded paper with weather-resistant impregnation

* Surround material Cloth-sealed

* Suspension Double

* Xmax (3) 8mm/0.33in

* Gap depth 9.5mm/0.37in

* Voice coil winding width 25mm/0.99in

Small Signal Parameters (4)

* D 0.38m/14.96in

* Fs 35.5Hz

* Mms 199.02g/7.025oz

* Qms 5.74

* Qes 0.46

* Mmd177.41g/6.26oz

* Qts 0.42

* Re 5.01 Ohm

* Vas 184.24lt/6.5ft3

* BI 22.11Tm

* Cms 0.10mm/N

* Rms 7.72kg/s

* Le (at 1kHz) 1.81mH

Mounting Information

* Diameter 452mm/17.8in

* Overall depth 205mm/8.07in

* Cut-out diameter 416mm/16.38in

* Mounting slot dimensions 10mm x 7mm/0.4in x 0.27in

* Number of mounting slots 8

* Mounting PCD range 429-440mm/16.89-17.32in

* Unit weight 9.8kg/21.6lb

Packed Dimensions & Weight

* Single pack size W x D x H 500mm x 500mm x 240mm / 19.7in x 19.7in x 9.4in

* Single pack weight 11.6kg/25.6lb

* Multi pack (24) size W x D x H 1210mmx1050mmx980mm / 47.6in x 41.3in x 35.4in

* Multi pack (24) weight 260kg/572lb