another try on OP2343, for audio amplifier

Boki · 2005-10-02T11:48:13+00:00

Hi All, After the LM386 function work ( but still dealing with smallnoise problem), I have took another try about connect VR to OPA2343directly( NO LM386 now) Why I do that is for save money, can I?The OPA2343 is the original circuit that be connected after DAC(audio)chip, I think why it here is for AV output spec, am I right? But theproblem is I will hear the sound is distorted ( when I turn volumelouder ) for 1W speaker,Question:1. The sound was distorted at a not louder enough volume, does theOPA2343 can't support that ? or this is speaker's problem?2. If the problem is OPA2343, can I change OPA2343 to LM386 directly?and I will add one switch to switch mini speaker output or normal AVoutput, if this can be done and function work as previous circuit (series LM386 after OPA2343 output), this will save a lot of money, isnot it?Short Description:The box has two audio output, one is the bundled mini speaker, antoheris normal AV output ( I want this output will not be affected by volumecontroller (VR) of mini speaker ).Best regards,Boki.

Oct 02, 2005 42 Replies

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Boki 20 years ago

"Pooh Bear" ???????: snipped-for-privacy@hotmail.com...

Too much is not enough Nobody gave it up Im not the kind To lay down and die

BR/ Boki.

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Boki 20 years ago

"Pooh Bear" ???????: snipped-for-privacy@hotmail.com...

I don't know, even express or browsers, I can't see them at all.

/BR Boki.

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Mac 20 years ago

newssvr11.news.prodigy.com!newsdbm04.news.prodigy.com!newsdst02.news.prodigy.com!newsmst01b.news.prodigy.com!prodigy.com!newscon02.news.prodigy.com!prodigy.net!news.glorb.com!postnews.google.com!g14g2000cwa.googlegroups.com!not-for-mail

I know you can't see the headers. But they are there. And other people's newsreaders can see them. And, I am guessing, that when Ted's reader saw this particular header, it decided that it should use the big5 character set. Or maybe Ted's computer reacted to this header in some way that annoyed Ted (maybe Ted's computer tried to download an Asian font package or something?).

Your later posts in this thread either use a different charset or don't have a charset entry at all. This one, for example, which appears to have been sent from outlook express, just says "text/plain".

--Mac

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