Celestion FTX1225

Ferrite magnet assembly acts as common motor for both LF and HF
Polyimide HF diaphragm
Demodulation ring
90° nominal HF coverage

General Specifications
Nominal Diameter 305mm / 12in
Power Rating 300W
Continuous power rating 600W
Rated impedance 8
Sensitivity 97dB
Frequency range 50-4000Hz
Chassis type Cast aluminium
Magnet type Ferrite
Magnet weight 2.3kg / 81oz
Voice coil diameter 64mm / 2.5in
Voice coil material Edgewound copper clad aluminium
Former material Glass fibre
Cone material Kevlar loaded paper
Surround material Cloth-sealed
Suspension Single
Xmax 6mm / 0.24in
Gap height (Hg) 8mm / 0.31in
VC winding height (Hvc) 16mm / 0.63in

Mounting Information

Overall diameter 318mm / 12.5in
Overall depth 168mm / 6.6in
Cut-out diameter 286mm / 11.26in
Mounting hole dimensions 7.5x6.5mm / 0.29x0.26in
Number of mounting holes 8
Mounting hole PCD 298-304mm / 11.70-11.97in
Unit weight 5.9kg / 13lb

Parameters

Sd 530.93cm2 / 82.29in2
Fs 47.3Hz
Mms 53.501g / 1.89oz
Qms 4.214
Qes 0.437
Qts 0.396
Re 5.39
Vas 84.59I / 2.99ft3
Bi 14.00Tm
Cms 0.212mm/N
Rms 3.77kg/s
Le (at 1kHz) 3.36mH
Xmax 6mm / 0.24in

Additional HF Specifications

Power rating 60W
Continuous power rating 120W
Rated impedance 8
Sensitivity 104dB
Frequency range 1000-20,000Hz
Recommended min. crossover 12dB/oct 2000Hz
Voice coil diameter 45mm / 1.75in
Magnet type Dual-ferrite magnet motor
Diaphragm material Polyimide
Surround material Polyimide
Packed Dimensions & Weight
Single pack size W x D x H
364mm x 364mm x 189mm / 14.3in
x 14.3in x 7.4in
Single pack weight 6.7kg / 14.7lb

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