FTR18-4080FDX (Legacy)

18-inch, cast aluminium chassis, ferrite magnet LF driver

Legacy part: out of production
Ferrite 18 inch woofer provides 800Wrms power handling (AES standard) and 96dB sensitivity
4″ high temperature Inside/Outside voice coil efficiently dissipates heat preventing sensitivity loss through thermal compression
FEA optimised magnet assembly provides low harmonic distortion and very high motor strength
Ribbed straight-sided glass-loaded cone with Flexirol(TM) surround for greater excursion control
Double suspension for exceptional linearity at the highest excursions
Smart chassis design minimises acoustic distortion

Specifications

18in

Diameter

1600W

Continuous power rating

8Ω

Rated impedance

96dB

Sensitivity

Nominal diameter

457mm / 18in

Power rating

800W

Continuous power rating

1600W

Rated impedance

8Ω

Sensitivity

96dB

Frequency range

30-1000Hz

Chassis type

Cast aluminium

Magnet type

Ferrite

Magnet weight

3.1kg / 110oz

Voice coil diameter

100mm / 4in

Voice coil material

Round copper

Former material

Glass fibre

Cone material

Glass loaded paper (weather-resistant)

Surround material

Cloth-sealed

Suspension

Double

Gap height (H_g)

10mm / 0.39in

VC winding height (H_vc)

22mm / 0.87in

Parameters

1134.12cm² / 175.79in²

37.3Hz

Mms

206.36g / 7.28oz

Qms

10.25

Qes

0.43

Qts

0.413

5.62Ω

Vas

160.74l / /5.67ft³

25.116Tm

Cms

0.088mm/N

Rms

4.716kg/s

Le (at 1kHz)

1.52mH

Xmax

6mm / 0.24in

Mounting Information

Overall diameter

462mm / 18.19in

Overall depth

205mm / 8.07in

Cut-out diameter

416mm / 16.38in

Mounting hole dimensions

10mm x 7mm / 0.39in x 0.27in

Number of mounting holes

Mounting hole PCD

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 2240mm / 19.7in x 19.7in x 9.4in

Single pack weight

11.6kg / 25.6lb

Multi pack size W x D x H

500mm x 500mm x 2240mm / 19.7in x 19.7in x 9.4in

Multi pack weight

11.6kg / 25.6lb

Frequency Response and Impedance Curves

Topmost curve: Frequency response on axis | Secondary curve: Frequency response at 45° off axis

Power rating: 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.

Continuous power rating: Defined as 3dB greater than the AES rating.

Sensitivity: Measured on axis at 1W, 1m in 2π anechoic environment.

Parameters: Measured after unit subjected to pre-conditioning signal.

Xmax: H_vc-H_g/2

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