audio amplifier using op amp tda2003

konzen said:

i see. how big must my speaker be? this is a 2 inch one i think

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That's probably only a 500mW speaker?, what's the output of the TDA2003 at the supply you're using?.

I mentioned earlier about layout being critical, this looks like you've just transferred the bad breadboard layout to stripboard? - the layout is still absolutely apalling, I would imagine it's very likely to be unstable?.

i haven't actually tried to monitor the output on the oscilloscope. but will do one of these days. the layout is quite bad as i was pressed for time. now i'm actually starting to understand the importance of layout. will put it in my report. for this project results only account for a small part. the report carries much more marks so i have to consider myself lucky this time. anyway thanks alot.