Celestion CF1025C 300W 8ohm

General Specifications

Nominal diameter: 254mm/10in

Power rating(1): 300Wrms

Nominal impedance: 8ohm

Sensitivity(2): 99dB

Frequency range: 60-5000Hz

Voice coil diameter: 64mm/2.5in

Chassis type: Cast Aluminium

Magnet type: Ferrite

Magnet weight: 1.7kg/60oz

Coil material: Edgewound copper clad aluminium

Cone material: Kevlar loaded paper

Surround material: Cloth-sealed

Suspension: Single

Gap depth: 8mm/0.31in

Voice coil winding width: 12.5mm/0.49in

Xmax(3): 2.5mm/0.1in

Small Signal Parameters

D: 0.21m/8.27in

Fs: 57.5Hz

Mms: 36.16g/1.28oz

Qms: 3.906

Qes: 0.310

Mmd: 32.51g/1.15oz

Qts: 0.287

Re: 5.54O

Vas: 35.69lt/1.286ft3

BI: 15.32Tm

Cms: 0.21mm/N

Rms: 3.358kg/s

Le (at 1kHz): 0.635mH

Mounting Information

Overall diameter: 265mm/10.43in

Overall depth: 119mm/4.69in

Cut-out diameter: 230.8mm/9.1in

Mounting slot dimensions: 8x6.5mm/0.3x0.25in

Number of mounting slots: 8

Mounting PCD range: 244.5-247mm/9.63-9.73in

Unit weight: 4.9kg/10.8lb

(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) Measured on axis at 1W, 1m in 2 anechoic environment.

(3) Xmax derived from: (voice coil winding width-gap depth)/2.