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Author Topic:

18 inch passive reflex subwoofer loaded with Celestion FTR18-4080FD

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« on: January 14, 2015, 17:12:04 »

fully working and tested. If you want to test this item out yourself you will need to bring round an amp and crossover

Here are the full specs! -


18" ferrite woofer provides 1000Wrms power handling (AES Standard) and 97dB sensitivity
4" high temperature Inside/Outside voice coil efficiently dissipates heat, preventing sensitivity loss through thermal compression
Flexirol (TM) surround for greater excursion control
Double suspension for exceptional linearity at the highest excursions
Low frequency response, down to 35Hz
Smart chassis design minimises acoustic distortion
Specially treated, weather-resistant cone


Nominal diameter 457mm/18in
Power rating 1000W RMS
Nominal impedance 8 Ohms
Sensitivity 97dB
Frequency range 35-2500Hz
Voice coil diameter 100mm/4in
Chassis type Cast Aluminium
Magnet type Ferrite
Coil material Round copper
Former material Glass fibre
Cone material Glass loaded paper with weather-resistant impregnation
Surround material Cloth-sealed
Suspension Double
Xmax 6mm/0.24in
Gap depth 10mm/0.39in
Voice coil winding width 22mm/0.87in
Magnet weight 3.1kg/110oz

Small Signal Parameters:

Fs 26Hz
Mms 172.42g/6.08oz
Mmd 150.81g/5.32oz
Qms 4.33
Qes 0.29
Qts 0.27
Re 5.39 Ω
Vas 395.56lt/13.96ft3
BI 22.88Tm
Cms 0.22mm/N
Rms 6.506kg/s
Le (at 1kHz) 1.41mH

Mounting Information:

Cut-out diameter 416mm/16.38in
Diameter 462mm/18.19in
Mounting slot dimensions 10mm x 7mm/0.39in x 0.27in
Number of mounting slots 8
Overall depth 205mm/8.07in
Unit weight 9.8kg/21.6lb
Mounting PCD range 429-440mm/16.89-17.32in


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