Celestion FTR15-3070C 400W 8ohm

General Specifications
Nominal diameter (mm/in): 381mm/15in
Power rating1: 400Wrms
Nominal impedance: 8ohm
Sensitivity2: 99dB
Frequency range: 40-4000Hz
Voice coil diameter: 75mm/3in
Chassis type: Cast Aluminium
Magnet type: Ferrite
Magnet weight: 2.3kg/81oz
Coil material: Round copper
Former material: Glass fibre
Cone material: Glass loaded paper with weather-resistant impregnation
Surround material: Cloth-sealed
Suspension: Single
Xmax3: 3mm/0.12in
Gap depth: 10mm/0.39in
Voice coil winding width: 16mm/0.63in

Small Signal Parameters
D 0.33m/12.99in
Fs 40Hz
Mms. 84.15g/2.97oz
Mmd 70.00g/2.47oz
Qms 7.10
Qes 0.38
Qts 0.36
Re 6.50ohm
Vas 208.0lt/7.34ft3
Bl 18.70Tm
Cms 0.20mm/N
Rms 2.86kg/s
Le (at 1kHz) 0.59mH

Mounting Information
Overall diameter 385mm/15.16in
Overall depth 158mm/6.22in
Cut-out diameter 351mm/13.82in
Mounting slot dimensions 10mm x 7mm/0.39in x 0.27in
Number of mounting slots 8
Mounting PCD range 365-375mm/14.37-14.76in
Unit weight 6.3kg/13.8lb

Packed Dimensions & Weigh
Single pack size W x D x H 435mm x 435mm x 200mm /17.1in x 17.1in x 7.9in
Single pack weight 7.7kg/17.0lb
Multi pack (36) size W x D x H 1200mm x 1000mm x 980mm /47.2in x 39.4in x 38.6in
Multi pack (36) weight 278kg/613lb