LF Cast Chassis / Ferrite

Celestion
Please wait
Buy Now

FTR18-4080FD

FTR18-4080FD
FTR18-4080FD

  • Glass loaded paper cone with weather-resistant impregnation
  • Optimised double suspension
  • Airflow vented magnet assembly for dynamic heat dispersion

Frequency Response and Impedance Curves

Product Graph
  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. Continuous Power Rating is defined as 3dB greater than the AES rating.
  3. Measured on axis at 1W, 1m in 2Π anechoic environment.
  4. Xmax derived from: (voice coil winding width-gap depth)/2.
  5. Small signal parameters measured after unit subjected to pre-conditioning signal.

General Specifications

Nominal diameter
457mm/18in
Power rating1
1000Wrms
Continuous power rating2
2000W
Nominal impedance
Sensitivity3
97dB
Frequency range
30-2,500Hz
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
Xmax4
6mm/0.24in
Gap depth
10mm/0.39in
Voice coil winding width
22mm/0.87in

Small Signal Parameters

D
0.38m/14.96in
Fs
25.2Hz
Mms
177.812g/6.27oz
Qms
4.750
Qes
0.304
Mmd
150.81g/5.32oz
Qts
0.286
Re
5.62Ω
Vas
408.72lt/14.43ft3
BI
22.81Tm
Cms
0.23mm/N
Rms
5.92kg/s
Le (at 1kHz)
1.5mH

Mounting Information

Overall diameter
452mm/17.8in
Overall depth
205mm/8.07in
Cut-out diameter
416mm/16.38in
Mounting slot dimensions
10mm x 7mm/0.39in 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
11.5kg/25.3lb
Multi pack size W x D x H
1210mm x 1050mm x 980mm
/47.6in x 41.3in x 35.4in
Multi pack weight
265kg/580lb