Professional Loudspeakers
Your Global Driver Solutions Partner
Celestion International Ltd, Claydon Business Park, Great Blakenham, Ipswich IP6 ONL, UK
+44 (0)1473 835300 [email protected] www.celestionprofessional.com
Celestion adopts a progressive policy and reserve the right to alter drive unit specifications and/or appearance without prior notice 08/05
TF1020
General Specifications
Nominal diameter (mm/in) ...................................... 254/10
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) ........................................... 60-3000
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) ............................................................ 0.21/8.27
F
s
(Hz) .......................................................................... 75
M
air
(g/oz) ...................................................... 3.65/0.129
M
md
(g/oz) ...................................................... 24.80/0.87
Q
ms
.......................................................................... 4.00
Q
es
........................................................................... 0.41
Q
ts
........................................................................... 0.37
R
e
(
Ω
) ...................................................................... 5.40
V
as
(lt/ft
3
) .......................................................... 26.6/0.94
Bl (Tm) ................................................................... 13.40
C
ms
(mm/N) .............................................................. 0.16
R
ms
(kg/s) ................................................................. 3.35
L
e
(mH).......................................................................0.49
Mounting Information
Overall diameter (mm/in) .................................. 256/10.08
Overall depth (mm/in).......................................... 110/4.33
Cut-out diameter (mm/in) .................................... 229/9.02
Mounting slot dimensions (mm/in)........... 6 x 8/0.24 x 0.31
Number of mounting slots ............................................... 4
Mounting PCD range (mm/in) .............................. 245/9.65
Unit weight (kg/lb).................................................. 3.7/8.2
Packed Dimensions & Weight
Single pack size W x D x H (mm/in) ...........280 x 280 x 120
............................................................ /11.0 x 11.0 x 4.7
Single pack weight (kg/lb) ........................................ 4/8.8
Multi pack (96) size W x D x H (mm/in) ...... 1080 x 880 x 840
.......................................................... /42.5 x 34.6 x 33.1
Multi pack (96) weight (kg/lb) .............................. 390/860
• High sensitivity bass and mid-range driver
• Ideally suited to compact enclosures and high pass systems
• Rigid chasis design for maximum energy transfer
• Kevlar-impregnated cone with sealed surround and damping for
reduced distortion
Frequency Response and Impedance Curves
FREQUENCY (Hz)
Measured - 1W @ 1m, 2
π
