TDA2030A vs LM1875? - diyAudio
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Old 1st September 2012, 05:06 AM   #1
fakeout is offline fakeout  Canada
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Question TDA2030A vs LM1875?

Is it worth asking the question? I read some positive comments on LM1875 but comments that some in the TDA series is more life like...
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Old 1st September 2012, 05:19 AM   #2
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LM1875 has a way better datasheet. Have tried both but without a lot of serious listening - no differences in sound jumped out at me. TDA is a lot cheaper (like a factor of 3X here).
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Old 1st September 2012, 07:24 AM   #3
Jay is offline Jay  Indonesia
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I guess it depends on your luck (to get a chip with optimum measured spec). I have more than 10 of each chip, and have tried many possibilities with each chip. And TDA2030A is better than LM1875. Yes, 2030A is very life-like or musical.
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Old 1st September 2012, 08:25 AM   #4
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No way for the 'life like' or the 'musical' adjectives
Those are 5 legs power Op Amps and perform well for what they
are designed .
Don't think to ask to them any musical qualities , as they reach the level
of a normal audition only in saturation.
I guess ' life -like' is being used as they might have been attached to some fullrange speakers ( typical from Tv sets ) to prove that fullrange sweetness is achieved with low parts number , compact packages and ... short cables .
The 100 W BTL with 2*tda2030A plus 2*BD249/2*BD250 allows more
headroom to be used , thou .
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Old 1st September 2012, 10:04 AM   #5
Jay is offline Jay  Indonesia
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Quote:
Originally Posted by picowallspeaker View Post
No way for the 'life like' or the 'musical' adjectives
That was subjective comparison between both cheap amps. LM overture series are better of course (I have tried all of them). But indeed, the TDA2030 has that dynamics that can make them musical or life-like (so many fakes out there). It is like listening to a simple Linn topology amplifier.

From all TDA chip amps, only TDA2030 I have never seen the equivalent schematic. Ever wondered why? The good sounding (unique harmonics spectrum) OPA2134 equivalent schematic is also never published as far as I know.

Quote:
Originally Posted by picowallspeaker View Post
Don't think to ask to them any musical qualities , as they reach the level
of a normal audition only in saturation.
My current favorite chip amp is TDA2009. Oh, and I have 4" drivers that can be driven directly from a handphone

Quote:
Originally Posted by picowallspeaker View Post
The 100 W BTL with 2*tda2030A plus 2*BD249/2*BD250 allows more headroom to be used , thou .
Remind me of some car audio guys where SPL is to them more important than sound quality (THD). I have never interested in BTL. If I want more watts I use different amp (discrete if necessary)
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Old 1st September 2012, 12:57 PM   #6
pra3718 is offline pra3718  India
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LM1875 was more musical to me, may be tda2030 was not original.
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Old 1st September 2012, 02:29 PM   #7
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'musical' it don't mean nothing !
Maybe ' euphonical' or ' not-musical' that may reveal soft or heavy aberrations.
But Musical is a whole , as it comprehends the Source , the Processing and the
Room ( or ...Ambient ). Moreover , it must be proven by whom who has the Authority to give such judgement .
But maybe I'm too heavy
For a 5 legged piece of plastic ...Yes ! It's musical !

My favourite IC power amp today is ....LA 4451 !!!
I ( think that I ) prefer OCC amps , as they add a little soft natural bounce
to the bass region ...but that's another story , as the loudspeaker ( and his
little constrained room as a system behind ) reacts ...it's his nature
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Old 1st September 2012, 03:18 PM   #8
Jay is offline Jay  Indonesia
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Quote:
Originally Posted by picowallspeaker View Post
My favourite IC power amp today is ....LA 4451 !!!
Cool... very low distortion at wide usable power. Never heard of that one.
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Old 1st September 2012, 05:15 PM   #9
fakeout is offline fakeout  Canada
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Quote:
Originally Posted by Jay View Post
I guess it depends on your luck (to get a chip with optimum measured spec). I have more than 10 of each chip, and have tried many possibilities with each chip. And TDA2030A is better than LM1875. Yes, 2030A is very life-like or musical.
You have tried many possibilities? Which ones did you prefer?

Did you try a vero board? Did you hear any white noise or find ways to get dead silent speakers when there's no music playing?
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Old 1st September 2012, 05:36 PM   #10
Preamp is offline Preamp  Germany
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Quote:
Originally Posted by picowallspeaker View Post
The 100 W BTL with 2*tda2030A plus 2*BD249/2*BD250 allows more headroom to be used , thou .
Something like this?
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