Tuesday, March 20, 2012
And they can sound good, despite low power... have to use a better supply filtering and an LM7808 voltage regulator, have to increase the output condensers to 1000uf and have to install small condensers from input and output live wire to ground..use 100n into input and output (0.001uf).... install 1uf non polarized capacitor in parallel with the output electrolitic condensers too..they are for high frequency bypass purposes...from plus to minus into those two condensers you have into the PC speaker integrated circuit output.. inside the box... also, if possible, move the transformer place to have more distance not to pick noises from mains Open holes over end under the enclosure to create convection cooling
http://www.youtube.com/watch?v=d1PCkmZWTPs&hl=en
