Coaxial/Twin Cone

Celestion
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FTX0820

FTX0820
FTX0820

  • Ferrite magnet assembly acts as common motor for both LF and HF
  • Polyimide HF diaphragm
  • Demodulation ring
  • 100° 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 two 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
    200mm/8in
    Power rating1
    200Wrms
    Continuous power rating2
    400W
    Nominal impedance
    Sensitivity2
    94dB
    Frequency range
    70-5,000Hz
    Voice coil diameter
    50mm/2in
    Chassis type
    Cast Aluminium
    Magnet type
    Ferrite
    Magnet weight
    1.5kg/54oz
    Coil material
    Edgewound copper
    Former material
    Glass fibre
    Cone material
    Kevlar loaded paper
    Surround material
    Cloth-sealed
    Suspension
    Single
    Xmax4
    2mm/0.8in
    Gap depth
    8mm/0.31in
    Voice coil winding width
    12mm/0.47in

    Small Signal Parameters

    D
    0.17m/6.69in
    Fs
    78.8Hz
    Mms
    22.66g/0.8.0oz
    Qms
    2.8
    Qes
    0.31
    Mmd
    19.19g/0.68oz
    Qts
    0.279
    Re
    5.85Ω
    Vas
    13.13l/0.46ft3
    BI
    14.56Tm
    Cms
    0.18mm/N
    Rms
    4.01kg/s
    Le (at 1kHz)
    0.62mH

    General Specifications: HF

    Power rating¹
    40Wrms
    Continuous power rating6
    80W
    Nominal impedance
    Sensitivity
    103dB
    Frequency range
    1,500-20,000Hz
    Recommended min. crossover (12dB/oct)
    2,200Hz
    Magnet type
    Dual ferrite magnet motor
    Voice coil diameter
    34mm/1.4in
    Diaphragm and surround material
    Polyimide

    Mounting Information

    Diameter
    225mm/8.6in (octagonal profile)
    Overall depth
    123mm/4.8in
    Cut-out diameter
    187mm/7.36in
    Mounting slot dimensions
    Ø6.5mm/0.26in
    Number of mounting slots
    8
    Mounting PCD range
    210mm/8.27in
    Unit weight
    4.1kg/9.0lb

    Packed Dimensions & Weight

    Single pack size W x D x H
    238mm x 238mm x 148mm
    /9.3in x 9.3in x 5.8in
    Single pack weight
    4.7kg/10.3lb

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