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
TF1520
General Specifications
Nominal diameter (mm/in)...................................... 381/15
Power rating (AES, W rms) ......................................... 150
Nominal impedance (
Ω
) ................................................. 8
Voice coil diameter (mm/in)........................................ 51/2
Magnet type............................................................ Ferrite
Magnet weight (kg/oz)..............................................1.1/40
Chassis type ................................................. Pressed steel
Sensitivity (dB) .............................................................. 96
Frequency range (Hz)........................................... 45-4000
Coil material ............................................... Round copper
Former material .................................................. Polyimide
Cone material ..................................... Kevlar loaded paper
Surround material .......................................... Cloth-sealed
Suspension ............................................................. Single
Xmax (mm/in)...................................................... 3.0/0.12
Gap depth (mm/in)............................................... 6.0/0.24
Voice coil winding width (mm/in) ....................... 14.5/0.57
Small Signal Parameters
D (m/in) .......................................................... 0.33/12.99
Fs(Hz) ....................................................................... 51.7
Mair (g/oz) .................................................... 14.15/0.499
Mmd (g/oz) ........................................................ 48.18/1.7
Qms .......................................................................... 6.69
Qes ........................................................................... 0.85
Qts ........................................................................... 0.75
Re(
Ω
) ...................................................................... 5.95
Vas (lt/ft3) ...................................................... 157.69/5.57
Bl (Tm) ................................................................... 11.93
Cms (mm/N) .............................................................. 0.15
Rms (kg/s) ................................................................. 3.03
Le(mH).......................................................................1.41
Mounting Information
Overall diameter (mm/in) .................................. 385/15.16
Overall depth (mm/in).......................................... 158/6.22
Cut-out diameter (mm/in).................................. 352/13.86
Mounting slot dimensions (mm/in)..... 9.4 x 6.3/0.37 x 0.25
Number of mounting slots ............................................... 8
Mounting PCD range (mm/in) ............................ 370/14.57
Unit weight (kg/lb)................................................ 5.0/11.0
Packed Dimensions & Weight
Single pack size W x D x H (mm/in)...........410 x 410 x 180
............................................................ /16.1 x 16.1 x 7.1
Single pack weight (kg/lb) ................................... 5.5/12.1
Multi pack (4) size W x D x H (mm/in) .......... 750 x 340 x 440
.......................................................... /29.5 x 13.4 x 17.3
Multi pack (4) weight (kg/lb) .................................... 22/48
• Versatile bass and mid range driver
• Ideal for 2-way and 3-way systems
• Kevlar-impregnated cone with sealed surround and damping
for reduced distortion
• Rigid chassis design for maximum energy transfer
• Vented magnet assembly for enhanced cooling
• Excellent performance at cost effective price point
Frequency Response and Impedance Curves
FREQUENCY (Hz) Measured - 1W @ 1m, 2π
