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
TF1220
General Specifications
Nominal diameter (mm/in)...................................... 305/12
Power rating (AES, W rms) ......................................... 150
Nominal impedance (
Ω
) ................................................. 8
Voice coil diameter (mm/in)........................................ 51/2
Magnet type............................................................ Ferrite
Magnet weight (kg/oz)..............................................1.2/42
Chassis type ................................................. Pressed steel
Sensitivity (dB) .............................................................. 97
Frequency range (Hz)........................................... 60-4000
Coil material ............................................... Round copper
Former material .................................................. Polyimide
Cone material ..................................... Kevlar loaded paper
Surround material .......................................... Cloth-sealed
Suspension ............................................................. Single
Xmax (mm/in)...................................................... 2.0/0.08
Gap depth (mm/in)............................................... 8.0/0.31
Voice coil winding width (mm/in) ....................... 12.0/0.47
Small Signal Parameters
D (m/in) .......................................................... 0.26/10.24
Fs(Hz) ...........................................................................55
Mair (g/oz) ........................................................6.91/0.244
Mmd (g/oz) .......................................................32.0/1.258
Qms .......................................................................... 4.30
Qes ........................................................................... 0.46
Qts ........................................................................... 0.42
Re(
Ω
) ...................................................................... 5.54
Vas (lt/ft3) .......................................................... 84.7/2.99
Bl (Tm) ................................................................... 12.70
Cms (mm/N) .............................................................. 0.21
Rms (kg/s) ................................................................. 3.16
Le(mH).....................................................................0.735
Mounting Information
Overall diameter (mm/in) .................................. 309/12.17
Overall depth (mm/in).......................................... 131/5.16
Cut-out diameter (mm/in).................................. 283/11.14
Mounting slot dimensions (mm/in)..................... Ø 7.9/0.31
Number of mounting slots ............................................... 4
Mounting PCD range (mm/in) ............................ 297/11.69
Unit weight (kg/lb).................................................. 4.0/8.8
Packed Dimensions & Weight
Single pack size W x D x H (mm/in)...........330 x 330 x 150
............................................................ /13.0 x 13.0 x 5.9
Single pack weight (kg/lb) ........................................ 3/6.6
Multi pack (60) size W x D x H (mm/in) ...... 1080 x 980 x 880
.......................................................... /42.5 x 38.6 x 34.6
Multi pack (60) weight (kg/lb) .............................. 190/419
• High sensitivity bass and mid range driver
• Ideal for use in 2-way high pass systems
• Rigid chasis design for maximum energy transfer
• High temperature copper voice coil wound on polyimide for
increased reliability
• Excellent performance at cost-effective price point
Frequency Response and Impedance Curves
FREQUENCY (Hz) Measured - 1W @ 1m, 2π
