The TDA 1519A from Philips is an easy to handle audio chip, operating on 12 Volt (car battery, always use a fuse from the battery to the amplifier!). It can deliver 2 x 11 Watt in a 2 Ohm speaker and 2 x 6 Watt in a 4 Ohm speaker or 22 Watt in a mono audi
