Can someone help me build an amplifier?

I want to put a loudspeaker on my backpack, but I want it to be at least 50watts and that's not a problem, the problem is connecting it to an mp3 player... I need some kind of amplifier for it right? I was wondering if someone can help me build that amplifier...

Xellers8 years ago
Building a 50 Watt amplifier, especially one that you want to carry around with you cannot be easy. Unless you're willing to carry a big lead acid battery around in your backpack, then you're better off building something smaller, a lot smaller. I'm sure that several watts will be more than enough. Simple designs for such amplifiers often just use an IC with the required resistors and capacitors. However, if you want to get your hands a little more dirty, then you can try to build something using only transistors, and no ICs. There are plenty of schematics on the web. If you still need help, feel free to ask.
baaane (author)  Xellers8 years ago
well the thing is I want really loud speaker, and amplifier and battery are two major problems... so I'll probably give up....
Xellers baaane8 years ago
You can make a good amplifier that plays loud music and runs off of a pair of nine volts. You just won't be able to get 50 watts out of it without killing the batteries VERY quickly. I recommend that you take a look at some of the TDA and LM chips that are out there.