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Old 8th February 2004, 01:09 PM   #1
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Default Replacing Chip

I have some old polk comptuer speakers. They use a TEA2025B (http://www.st.com/stonline/bin/hilit...words=TEA2025B) amplifier, which delivers only 1W + 1W, and distorts easily.

Are there any more powerful chips (2.5W + 2.5W or 5W + 5W) that can be put in place of it? The chip in it right now is a 14-pin DIP package.

Thanks!

-Mike
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Old 8th February 2004, 01:19 PM   #2
joensd is offline joensd  Germany
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Quote:
Are there any more powerful chips (2.5W + 2.5W or 5W + 5W) that can be put in place of it? The chip in it right now is a 14-pin DIP package
Finding a chip that will fit your PCB will be quite hard if not impossible but you could build something else in gainclone-manner in it.
The cheapest but still good solution would be something like a TDA2030(2040,2050) or a LM1875.
I replaced a chip once for a friend that had the same problem and I had this TDA7264 lying around from a TV.
Its stereo, has 8 pins and is real easy to hardwire.
But then again there are so many chips to choose from...
(TDA1521...)

Do you have a dual supply in your old amp?
If not the TDA1519 might be an easy stereo solution.

Cheers
Jens
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Old 9th February 2004, 01:34 AM   #3
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It's a +10V wall wart
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Old 9th February 2004, 08:40 AM   #4
joensd is offline joensd  Germany
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Then use something like the TDA1519 or TDA1519C.
I built a 12V amp with them once; cheap components and it was by far enough to get "all" out of the PC speakers.
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