Whic Chip is better? LM3886T or TDA7293v

diptangshu · 10:57 AM

I want to build an amplifier for home. I shortlisted two chips LM3886T and TDA7293v/94/95. Can any one tell me which chip has better sound quality? their advantages and drawbacks?

Also if you have any idea about "NATIONAL SEMICONDUCTOR - LM4780TA"

Thanks.

AndrewT · 5th October 2010, 11:32 AM

Hi,
which chip has better support from the Manufacturer and from other sources, eg our Forum?

At first stage I would want a working amplifier and learn from there, rather than a non working amplifier and lose heart and give up.

Roushon · 5th October 2010, 11:57 AM

LM3886T as I built it and is very good. I have no idea about the other ones.

Roushon.

Andy5112405 · 5th October 2010, 12:21 PM

I built the LM3886T to replace my Levinson 338 when it went for a service. OK it's not as good as the Levinson but it was acceptable even to my tuned ears.

pjp · 12:51 PM

These two ICs have been debated endlessly already. Did you search the forum ?

My personal opinion is you will not be able to hear the difference.

epitaxial · 01:37 PM

The 7293v is DMOS, with MOSFET outputs. The 3886 is friendly for experimenters and DIYers, and you may want to search for the differences in protection systems. DMOS works well with high NFB current and heat.

The 3886 has Darlington outputs. Possibly, the 3886 handles lower impedances better. The 7294 I use has good 16 ohm power, and generally has flawless sound all around.

I have not tried the 3886, but from what I know of MOSFETS and the 7294, manufacturers aren't quite as confident with them.

One could Google or search online for opinions about the two-Darlingtons or DMOS.

abraxalito · 5th October 2010, 01:36 PM

TDA7293 has lower quiescent, can be paralleled very easily for higher power, runs at higher voltages and clips more cleanly without need of a zobel. It does though need a bootstrap cap. LM3886 has the option of an isolated package and needs fewer pins to hook up to so fewer components in application. I wouldn't say that I would be able to tell the difference in sound quality, they both sound great to my ears. That is until you hit clipping, when the LM3886 can sound a bit rough.

Redshift187 · 5th October 2010, 02:01 PM

The LM4780TA is a pair of LM3886's in one package (IE 2 channels instead of 1).

Ar4 · 5th October 2010, 02:39 PM

I made LM4780 chipamp with P2P technique, and it sounds good, no noise without signal, clear sound, cant complain about anything. Just use Rs for input, and use proper grounding.

jamal · 6th October 2010, 12:00 AM

My branded PC speakers come with 3 TDA 7296 and teroidal transformer inside.

5th October 2010, 10:54 AM	#1
diptangshu diyAudio Member Join Date: Apr 2010 Location: Howrah, India	Whic Chip is better? LM3886T or TDA7293v I want to build an amplifier for home. I shortlisted two chips LM3886T and TDA7293v/94/95. Can any one tell me which chip has better sound quality? their advantages and drawbacks? Also if you have any idea about "NATIONAL SEMICONDUCTOR - LM4780TA" Thanks. Last edited by diptangshu; 5th October 2010 at 10:57 AM.

5th October 2010, 11:57 AM	#3
Roushon diyAudio Member Join Date: Sep 2004 Location: Mumbai (Bombay)	LM3886... LM3886T as I built it and is very good. I have no idea about the other ones. Roushon. __________________ S. Roushon

5th October 2010, 12:48 PM	#5
pjp diyAudio Member Join Date: Nov 2006 Location: under the rainclouds	These two ICs have been debated endlessly already. Did you search the forum ? My personal opinion is you will not be able to hear the difference. Last edited by pjp; 5th October 2010 at 12:51 PM.

5th October 2010, 01:24 PM	#6
epitaxial diyAudio Member Join Date: Sep 2010 Location: Middle Canada	Difference between chips The 7293v is DMOS, with MOSFET outputs. The 3886 is friendly for experimenters and DIYers, and you may want to search for the differences in protection systems. DMOS works well with high NFB current and heat. The 3886 has Darlington outputs. Possibly, the 3886 handles lower impedances better. The 7294 I use has good 16 ohm power, and generally has flawless sound all around. I have not tried the 3886, but from what I know of MOSFETS and the 7294, manufacturers aren't quite as confident with them. One could Google or search online for opinions about the two-Darlingtons or DMOS. Last edited by epitaxial; 5th October 2010 at 01:37 PM. Reason: Add more

5th October 2010, 01:36 PM	#7
abraxalito diyAudio Member Join Date: Sep 2007 Location: Hangzhou - Marco Polo's 'most beautiful city'. 700yrs is a long time though... Blog Entries: 62	TDA7293 has lower quiescent, can be paralleled very easily for higher power, runs at higher voltages and clips more cleanly without need of a zobel. It does though need a bootstrap cap. LM3886 has the option of an isolated package and needs fewer pins to hook up to so fewer components in application. I wouldn't say that I would be able to tell the difference in sound quality, they both sound great to my ears. That is until you hit clipping, when the LM3886 can sound a bit rough. __________________ When a measure becomes a target, it ceases to be a good measure. C.A.E. Goodhart


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5th October 2010, 11:32 AM	#2
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	Hi, which chip has better support from the Manufacturer and from other sources, eg our Forum? At first stage I would want a working amplifier and learn from there, rather than a non working amplifier and lose heart and give up.

5th October 2010, 12:21 PM	#4
Andy5112405 Banned Join Date: Nov 2006 Location: Torpoint	I built the LM3886T to replace my Levinson 338 when it went for a service. OK it's not as good as the Levinson but it was acceptable even to my tuned ears.

5th October 2010, 02:01 PM	#8
Redshift187 diyAudio Member Join Date: Aug 2008	The LM4780TA is a pair of LM3886's in one package (IE 2 channels instead of 1). __________________ Tyler

5th October 2010, 02:39 PM	#9
Ar4 diyAudio Member Join Date: Apr 2010 Location: Latvia	I made LM4780 chipamp with P2P technique, and it sounds good, no noise without signal, clear sound, cant complain about anything. Just use Rs for input, and use proper grounding.

6th October 2010, 12:00 AM	#10
jamal diyAudio Member Join Date: Sep 2010	My branded PC speakers come with 3 TDA 7296 and teroidal transformer inside.

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