Whic Chip is better? LM3886T or TDA7293v

[diptangshu]

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]

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]

LM3886...

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

Roushon.

 

[Andy5112405]

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]

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]

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.

 

[abraxalito]

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]

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

 

[Ar4]

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]

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

 

[Gopher]

They cost a few pounds each. Just build two amps with each chip in and see which sounds best to YOU instead of asking what OTHER PEOPLE think sounds best.

How do you know they have the same musical tastes as you anyway?

That's what DIY AUDIO is all about.

 

[diptangshu]

thanks to all for submitting their opinion. I will try and let you know the result.

 

[masood]

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

Roushon.

dear rouson,
from which shop u get it and what will the price at present thanking u.masood