can tda1514a bridged hold 4 ohm load?

rulezzz · 4th January 2004, 03:12 PM

i have a 150w 4ohm speaker and two tda1514a's.Briged both microshem can deliver on 4 ohm load and 25v about 120 w maybe more.What shall i do?: put on output 4ohm resistor with speaker or tda1514a can hold 2ohm each?

rulezzz · 5th January 2004, 07:00 AM

maybe it would be better to use about +/- 20 volts and use 4 ohm load(2 ohm for each tda1514)

Dxvideo · 5th January 2004, 07:48 AM

May be you can try them in parallel mode! With +/- 23v PSU TDA1514A can drive 48W to a 4ohm load. And if u connect them in parallel u can feed them with +/- 28v. In that case they will give about 85W RMS to a 4 ohm load.

rulezzz · 5th January 2004, 07:03 PM

if i use bridge with 4 ohms load and +/-25volt and put heatsink with cooler 0.6°C/W 2xtda1514 wouldn't fail even on 140 Watt load!!??

Dxvideo · 6th January 2004, 07:07 AM

I tried one TDA1514A with 4ohm load and sym 26v PSU. It was hot as a hell! How can u do that? Doesnt SOAR and thermal protection get active?

rulezzz · 6th January 2004, 12:06 PM

i'll put heatsink and cooler about 0.6°C/W.I think this should do it.
Bytheway 0.6°C/W can hold AMD palomino with 70watts dissipation.

rulezzz · 6th January 2004, 12:08 PM

Dxvideo wrote:

Quote:

I tried one TDA1514A with 4ohm load and sym 26v PSU. It was hot as a hell! How can u do that? Doesnt SOAR and thermal protection get active?

that heatsink did you use?

Dxvideo · 6th January 2004, 01:14 PM

15x20cm standard passive alu hetasink.

4th January 2004, 03:12 PM	#1
rulezzz diyAudio Member Join Date: Jan 2004 Location: not nessesary	can tda1514a bridged hold 4 ohm load? i have a 150w 4ohm speaker and two tda1514a's.Briged both microshem can deliver on 4 ohm load and 25v about 120 w maybe more.What shall i do?: put on output 4ohm resistor with speaker or tda1514a can hold 2ohm each?

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5th January 2004, 07:00 AM	#2
rulezzz diyAudio Member Join Date: Jan 2004 Location: not nessesary	maybe it would be better to use about +/- 20 volts and use 4 ohm load(2 ohm for each tda1514)

5th January 2004, 07:48 AM	#3
Dxvideo diyAudio Member Join Date: Nov 2003 Location: Turkey	May be you can try them in parallel mode! With +/- 23v PSU TDA1514A can drive 48W to a 4ohm load. And if u connect them in parallel u can feed them with +/- 28v. In that case they will give about 85W RMS to a 4 ohm load.

5th January 2004, 07:03 PM	#4
rulezzz diyAudio Member Join Date: Jan 2004 Location: not nessesary	if i use bridge with 4 ohms load and +/-25volt and put heatsink with cooler 0.6°C/W 2xtda1514 wouldn't fail even on 140 Watt load!!??

6th January 2004, 07:07 AM	#5
Dxvideo diyAudio Member Join Date: Nov 2003 Location: Turkey	I tried one TDA1514A with 4ohm load and sym 26v PSU. It was hot as a hell! How can u do that? Doesnt SOAR and thermal protection get active?

6th January 2004, 12:06 PM	#6
rulezzz diyAudio Member Join Date: Jan 2004 Location: not nessesary	i'll put heatsink and cooler about 0.6°C/W.I think this should do it. Bytheway 0.6°C/W can hold AMD palomino with 70watts dissipation.

6th January 2004, 01:14 PM	#8
Dxvideo diyAudio Member Join Date: Nov 2003 Location: Turkey	15x20cm standard passive alu hetasink.