TDA7294 IC works with 12-0-12v transformer

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I order tda7294ic and i have 12-0-12v 10a transformer but i dont know it will works with tda7294 for higher performance. Or it will require 25-0-25v 5a transformer.
Datasheet says it needs +-10 to +-40 volts and i have 8 ohm 10 inches speakers. So 12-0-12v 10a transformer is enough for deliver output power up to 70watts.
 
It also works 12-0-12 transformer but soud is weak and bad because just as noted nigelwright7557.

Some day ago I too just tested some TDA7293 and TDA7294 circuits and if i tried use 12-0-12 transformer, then sound quality is bad, maybe only some first W sound is listenable but not more.
You need minimal 16-0-16 transformer or as mentioned, maybe 25-0-25, I also test this chips19-0-19 AC volts (+-28V DC) and sound quality is much better than 12-0-12.
 
I order tda7294ic and i have 12-0-12v 10a transformer but i dont know it will works with tda7294 for higher performance. Or it will require 25-0-25v 5a transformer.
Datasheet says it needs +-10 to +-40 volts and i have 8 ohm 10 inches speakers. So 12-0-12v 10a transformer is enough for deliver output power up to 70watts.
70W into 8ohms from a 12-0-12 transformer is not easy to do well.
You could consider a bridge circuit?
 
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