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
FTR12-3070C
General Specifications
Nominal diameter (mm/in) .......................................305/12
Power Rating (AES, W rms) ..........................................350
Nominal impedance (
Ω
) ...................................................8
Voice coil diameter (mm/in) ...................................76.2/3.0
Magnet type.............................................................Ferrite
Chassis type ...............................................Cast aluminium
Sensitivity (dB) ...............................................................96
Frequency range (Hz) ............................................40-4000
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) .......................................................3.0/0.12
Gap depth (mm/in)..............................................10.0/0.40
Voice coil winding width (mm/in)..........................16.0/0.63
Small Signal Parameters
D (m/in)............................................................0.26/10.24
Fs(Hz) ........................................................................48.1
Mmd (g/oz)........................................................50.65/1.78
Mair (g/oz)...........................................................6.92/0.24
Qms ............................................................................3.10
Qes.............................................................................0.34
Qts .............................................................................0.30
Re(
Ω
) ........................................................................5.56
Vas (lt/ft
3
) ..........................................................75.82/2.67
BI (Tm) .....................................................................17.00
Cms (mm/N) ................................................................0.19
Rms (kg/s) ...................................................................5.61
Le(mH).......................................................................1.25
Mounting Information
Overall diameter (mm/in) ......................................313/12.3
Overall depth (mm/in)...........................................102/4.02
Cut-out diameter (mm/in) .....................................232/9.13
Mounting slot dimensions (mm/in) ..........6.5/0.26 x 7.5/0.3
Number of mounting slots ................................................8
Mounting slot PCD range (mm/in) .............244-247/9.6-9.7
Unit weight (kg/lb).................................................6.3/13.9
Packed Dimensions and Weight
Single pack size W x D x H (mm/in)...........350 x 350 x 180
............................................................./13.8 x 13.8 x 7.1
Single pack weight (kg/lb) .....................................8.1/17.8
Multipack (60) size W x D x H (mm/in) ..........1210 x 1050 x
.....................................................980/47.6 x 41.3 x 35.4
Multipack (60) weight (kg/lb) .................................400/880
• 12" ferrite mid/bass driver offers 350Wrms (AES) continuous
power handling
• 3" high temperature Inside/Outside voice coil efficiently dissipates
heat, preventing sensitivity loss due to thermal compression
• Low frequency response, down to 40Hz
• Intelligent heat management in both chassis and magnet assembly
design further minimizes distortion
