Professional Loudspeakers
Your Global Driver Solutions Partner
Celestion International Ltd, Claydon Business Park, Great Blakenham, Ipswich IP6 ONL, UK
Celestion adopts a progressive policy and reserve the right to alter drive unit specifications and/or appearance without prior notice 08/05
FTR18-4080F
General Specifications
Nominal diameter (mm/in)...................................... 457/18
Power rating (AES, W rms) ......................................... 600
Nominal impedance (
Ω
) ................................................. 8
Voice coil diameter (mm/in)...................................... 100/4
Magnet type............................................................ Ferrite
Magnet weight (kg/oz)............................................3.1/110
Chassis type.............................................. Cast Aluminium
Sensitivity (dB) .............................................................. 97
Frequency range (Hz)........................................... 30-3000
Coil material ............................................... Round copper
Former material ................................................ Glass fibre
Cone material ................. Glass loaded paper with weather
........................................................resistant impregnation
Surround material .......................................... Cloth-sealed
Suspension ............................................................. Single
Xmax (mm/in)...................................................... 6.0/0.24
Gap depth (mm/in)............................................. 10.0/0.39
Voice coil winding width (mm/in) ....................... 22.0/0.87
Small Signal Parameters
D (m/in) .......................................................... 0.38/14.96
Fs(Hz) ....................................................................... 32.7
Mmt (g/oz) .................................................... 158.22/5.58
Mmd (g/oz) .................................................... 136.61/4.82
Qms .......................................................................... 5.24
Qes ........................................................................... 0.32
Qts ........................................................................... 0.30
Re (
Ω
) ...................................................................... 5.31
Vas (lt/ft3) ........................................................ 271.99/9.6
Bl (Tm) ................................................................... 23.31
Cms (mm/N) .............................................................. 0.15
Rms (kg/s) ................................................................. 6.21
Le(mH) ...................................................................... 1.46
Mounting Information
Overall diameter (mm/in) .................................. 462/18.19
Overall depth (mm/in).......................................... 205/8.07
Cut-out diameter (mm/in).................................. 416/16.38
Mounting slot dimensions (mm/in)......... 7 x 10/0.28 x 0.39
Number of mounting slots ............................................... 8
Mounting PCD range (mm/in) .......... 429-440/16.89-17.32
Unit weight (kg/lb)................................................ 9.7/21.4
Packed Dimensions & Weight
Single pack size W x D x H (mm/in) ...........500 x 500 x 240
............................................................./19.7 x 19.7 x 9.4
Single pack weight (kg/lb) ................................. 11.5/25.4
Multi pack (24) size W x D x H (mm/in) ..............................
..............................1500 x 1000 x 980/59.1 x 39.4 x 38.6
Multi pack (24) weight (kg/lb) .............................. 276/608
• 600Wrms continuous power handling (AES Standard)
• Flexirol
TM
technology for greater excursion control
• Saturated gap technology for lower harmonic distortion
• Low frequency response, down to 30Hz
• Smart chassis design minimises acoustic distortion
• Specially treated weather-resistant cone
Frequency Response and Impedance Curves
FREQUENCY (Hz) Measured - 1W @ 1m, 2π
