Coaxial/Twin Cone

Celestion
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FTX1225

FTX1225
FTX1225

  • Ferrite magnet assembly acts as common motor for both LF and HF
  • Polyimide HF diaphragm
  • Demodulation ring
  • 90° nominal HF coverage
  • HF repair kit available
  • 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. tested for 2 hours on plane wave tube using a continuous, band limited pink noise signal as per AES standard. Power calculated on minimum impedance
    6. Continuous Power Handling is defined as 3dB greater than the AES rating.

    General Specifications

    Size
    305mm/12in
    Power rating1
    300Wrms
    Continuous power rating2
    600W
    Nominal impedance
    Sensitivity3
    97dB
    Frequency range
    50-4,000Hz
    Voice coil diameter
    64mm/2.5in
    Chassis type
    Cast Aluminium
    Magnet type
    Ferrite
    Magnet weight
    2.3kg/81oz
    Coil material
    Edgewound copper clad aluminium
    Former material
    Glass fibre
    Cone material
    Kevlar loaded paper
    Surround material
    Cloth-sealed
    Suspension
    Single
    Xmax4
    4mm/0.16in
    Gap depth
    8mm/0.31in
    Voice coil winding width
    16mm/0.6.3in

    Small Signal Parameters

    D
    0.26m/10.24in
    Fs
    42.1Hz
    Mms
    47.53g/1.68oz
    Qms
    3.345
    Qes
    0.459
    Mmd
    42.52g/1.5oz
    Qts
    0.403
    Re
    5.74Ω
    Vas
    12.081lt/0.43ft3
    BI
    12.54Tm
    Cms
    0.3mm/N
    Rms
    3.76kg/s
    Le (at 1kHz)
    0.5mH

    General Specifications: HF

    Power rating5
    60Wrms
    Continuous power rating6
    120W
    Nominal impedance
    Sensitivity²
    104dB
    Frequency range
    1000-18,000Hz
    Recommended min. crossover (12dB/oct)
    2,000Hz
    Magnet type
    Dual ferrite magnet motor
    Voice coil diameter
    45mm/1.75in
    Diaphragm and surround material
    Polyimide

    Mounting Information

    Diameter
    318mm/12.5in
    Overall depth
    168mm/6.61in
    Cut-out diameter
    286mm/11.26in
    Mounting slot dimensions
    7.5x6.5mm/0.29x0.26in
    Number of mounting slots
    8
    Mounting PCD range
    298-304mm/11.70-11.97in
    Unit weight
    5.9kg/13.0lb

    Packed Dimensions & Weight

    Single pack size W x D x H
    364mm x 364mm x 189mm
    /14.3in x 14.3in x7.4in
    Single pack weight
    6.7kg/14.7lb