Data Sheet

LF Cast Chassis / Ferrite
FTR18-4080HDX
Features
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 Ω 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 2 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.
General Specifications
Nominal diameter 457mm/18in
Power rating1 1000Wrms
Nominal impedance 8 Ω
Sensitivity2 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
Mmd 177.41g/6.26oz
Qms 5.74
Qes 0.46
Qts 0.42
Re 5.01 Ω
Vas 184.24lt/6.5ft3
BI 22.11Tm
Cms 0.10mm/N
Rms 7.72kg/s
Le (at 1kHz) 1.81mH
Mounting Information
Diameter 462mm/18.19in
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
Celestion, Claydon Business Park, Great Blakenham, Ipswich, IP6 0NL United Kingdom