User Manual
LF Pressed Chassis / Ferrite
TF1520
Versatile 15" bass and mid-range speaker drive providing 96dB sensitivity
and 150Wrms (AES standard) power handling
2" high temperature copper voice coil wound on polyimide for increased
reliability
Ideal for 2-way and 3-way systems
Kevlar-loaded cone with sealed surround and damping for reduced distortion
Rigid chassis design for maximum energy transfer
Vented magnet assembly for enhanced cooling
8 Ω Frequency Response
1. Tested for two hours using a continuous, band-limited pink noise signal as per AES standard. Power
calculated on minimum impedance. Loudspeaker tested in free air.
2. Continuous Power Handling is defined as 3dB greater than the AES rating.
3. Tested as per the EIA-426-A standard
4. Measured on axis at 1W, 1m in 2Î anechoic environment.
5. Xmax derived from: (voice coil winding width-gap depth)/2.
6. Small signal parameters measured after unit subjected to pre-conditioning signal.
General Specifications
Nominal diameter 381mm/15in
Power rating
1
150Wrms
Continuous power rating
2
300W
EIA power rating
3
250W
Nominal impedance 8 Ω
Sensitivity
4
96dB
Frequency range 45-4000Hz
Voice coil diameter 50mm/2in
Chassis type Pressed steel
Magnet type Ferrite
Magnet weight 1.1kg/40oz
Coil material Round copper
Former material Polyimide
Cone material Kevlar loaded paper
Surround material Cloth-sealed
Suspension Single
Xmax
5
3mm/0.12in
Gap depth 8mm/0.24in
Voice coil winding width 14.5mm/0.57in
Small Signal Parameters
D 0.33m/12.99in
Fs 51.7Hz
Mms 62.33g/2.2oz
Qms 6.69
Qes 0.85
Mmd 48.18g/1.7oz
Qts 0.75
Re 5.95Ω
Vas 157.69lt/5.57ft3
BI 11.93Tm
Cms 0.15mm/N
Rms 3.03kg/s
Le (at 1kHz) 1.41mH
Mounting Information
Overall diameter 385mm/15.16in
Overall depth 158mm/6.22in
Cut-out diameter 352mm/13.86in
Mounting slot dimensions 9.4mm x 6.3mm/0.37in x 0.25in
Number of mounting slots 8
Mounting PCD range 370mm/14.57in
Unit weight 5.0kg/11.0lb
Packed Dimensions & Weight
Single pack size W x D x H 410mm x 410mm x 180mm
/16.1in x 16.1in x 7.1in
Single pack weight 5.5kg/12.1
Multi pack size W x D x H 750mmx340mmx440mm
/29.5in x 13.4in x 17.3in
Multi pack weight 22kg/48lb
Celestion, Claydon Business Park, Great Blakenham, Ipswich, IP6 0NL United Kingdom