Celestion TF1225 250W 8ohm

General Specifications
Nominal diameter: 305mm/12in
Power rating1: 250Wrms
Nominal impedance: 8ohm
Sensitivity2: 97dB
Frequency range: 50-4000Hz
Voice coil diameter: 64mm/2.5in
Chassis type: Pressed steel
Magnet type: Ferrite
Magnet weight: 1.2kg/42oz
Coil material: Round copper
Former material: Polyimide
Cone material: Kevlar loaded paper
Surround material: Cloth-sealed
Suspension: Single
Xmax3: 2.5mm/0.1in
Gap depth: 8mm/0.31in
Voice coil winding width: 13mm/0.51in
Small Signal Parameters
D: 0.26m/10.24in
Fs: 63Hz
Mms: 46.51g/1.64oz
Mmd: 39.60g/1.40oz
Qms: 6.70
Qes: 0.54
Qts: 0.50
Re: 5.13ohm
Vas: 54.5lt/1.92ft3
Bl: 13.20Tm
Cms: 0.14mm
Rms: 2.76kg/s
Le (at 1kHz): 0.84mH
Mounting Information
Overall diameter: 309mm/12.17in
Overall depth: 130mm/5.12in
Cut-out diameter: 283mm/11.14in
Mounting slot dimensions: Ø 7.9/0.31
Number of mounting slots: 4
Mounting PCD range: 297mm/11.69in
Unit weight: 4.1kg/9.0lb
Packed Dimensions & Weight
Single pack size W x D x H: 330mm x 330mm x 150mm/13.0in x 13.0in x 5.9in
Single pack weight: 5kg/11lb
Multi pack (60) size W x D x H: 1080mm x 980mm x 880mm/42.5in x 38.6in x 34.6in
Multi pack (60) weight: 290kg/638lb