assembly using inexpensive YuanJing brand TDA8920 board, with some minor tweaks.

I recently got a YuanJing brand low cost TDA8920 based board from ebay. This is a fairly basic low frills build but worth documenting for those interested.

I’d already wired up the case for my second ConnexElectronics TDA8920 board when I managed to fry the board. Out of curiousity I decided to check out this lower cost board that was going cheap cheap ($19USD + $9USD postage), as I could use the transformer I’d already mounted in the case as they are similar units.

This is the board on ebay:
TDA8920 Class D Amplifier board/ audio Power AMP 2X100W – eBay Power Amplifiers, Amplifiers, Home Audio, Electronics. (end time 19-Jul-10 02:14:45 AEST)

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It has a smaller heatsink than the connex module, and smaller PSU 4700uF caps.

Initially it sounded OK, but not as good as the Connex module, quite a bit more grainy.. also interestingly it uses 5W power even when silent, and hence (with the smaller heatsink) runs a lot hotter.
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