increasing the capacitance

after the torroid there are capacitors. the caps are hooked in parallel to the out put of the torroid. they are usually in pairs, or muliple pairs. what you need to do is buy capacitors with the same voltage and the same pf. for example mine were 4700 pf 35 volts, so i bought 4 of them and put 2 per side.  i ended up with a little under 15000pf .just make sure that the caps are parallel with the ones on the board. now i could have added 10 000 pf 35 volt but i thought i would increase the capacitance slowly at first. i put one more pair first and then added the second pair when i saw that all was fine.i read an article that stated that increasing to anywhere between 15000-20000 cleans the signal soo good that it turns it into a d class amplifier. i ends up making the amplifier more efficient. similar to adding stiffening caps to the power supply externally . it just allows the power supply to work at it's maximum potential.  if you were to take apart a d class amplifier , you'll notice that it will have as many capacitors as possible. jusst remember to keep the same voltage.if you increase the voltage you'll blow all your transistors.  i added 2 3 inch fans to helpcool down my amps. so that it doesn't go into thermal protection. good luck

ps post a message if your gonna try it or if you need help

Adding caps to the inside of an amp like this is almost identical to adding a capacitor inline in front of the amp. A slight difference is present because they are behind the tranny, but not a whole lot. It will gain you about the same effect. It in NO WAY "turns it into a d class amplifier."  A class D amplifier uses a switching power supply, which reverses extremely fast via digital technology. It is NOT just a Class AB (most car amps are AB) with "as many capacitors as possible". If this were so, then why don't the best amps have eight or ten farads built in? Why does the user have to add caps to the power supply?

I refer you to http://www.eatel.net/~amptech/elecdisc/ampclass.htm Here.

If you need more info on amp classes, look around. I have read a fair amount of articles trying to dispell the myths of amp classes. I can tell you more if you have the time and patience to listen.