First - Have a good power supply circuit and a big enough/proper voltage transformer
Second - Big heatsink, there is no such thing as too large of a heatsink
Proper heatsink size for two LM1875 chips, or one LM3886:
Overkill(which isn't a bad thing though):
Second - Big heatsink, there is no such thing as too large of a heatsink
Proper heatsink size for two LM1875 chips, or one LM3886:
Overkill(which isn't a bad thing though):