Celestion FTR18-4080F 600W 8ohm

General Specifications
Nominal diameter: 457mm/18in
Power rating1: 600Wrms
Nominal impedance: 8ohm
Sensitivity2: 97dB
Frequency range: 30-3000Hz
Voice coil diameter: 100mm/4in
Chassis type: Cast Aluminium
Magnet type: Ferrite
Magnet weight: 3.1kg/110oz
Coil material: Round copper
Former material: Glass fibre
Cone material: Glass loaded paper with weather resistant impregnation
Surround material: Cloth-sealed
Suspension: Single
Xmax3: 6mm/0.24in
Gap depth: 10mm/0.39in
Voice coil winding width: 22mm/0.87in

Small Signal Parameters
D: 0.38m/14.96in
Fs: 32.7Hz
Mms: 158.22g/5.58oz
Mmd:136.61g/4.82oz
Qms: 5.24
Qes: 0.32
Qts: 0.30
Re: 5.31ohm
Vas: 271.99lt/9.6ft3
Bl: 23.31Tm
Cms: 0.15mm/N
Rms: 6.21kg/s
Le (at 1kHz): 1.46mH

Mounting Information
Overall diameter: 462mm/18.19in
Overall depth: 205mm/8.07in
Cut-out diameter: 416mm/16.38in
Mounting slot dimensions: 10mm x 7mm/0.39in x 0.27in
Number of mounting slots: 8
Mounting PCD range: 429-440mm/16.89-17.32in
Unit weight: 9.7kg/21.4lb

Packed Dimensions & Weight
Single pack size W x D x H: 500mm x 500mm x 240mm/19.7in x 19.7in x 9.4in
Single pack weight: 11.5kg/25.4lb
Multi pack (24) size W x D x H: 1500mm x 1000mm x 980mm/59.1in x 39.4in x 38.6in
Multi pack (24) weight: 278kg/608lb