small amplifier

[LiTHiUM0XiD3]

ok so i have a small amplifier from a ipod speaker set... and 2 speakers
i need to try and convert it from 6v (4xAAA)
down to 5v as a more standard source.. im gunna take apart the PCB and identify all the parts.. and then try to get a pic of the PCB with alot of light behind it to show all the traces
but ye.. i want to convert it to run on 5v... and hopefully find a way to up the output wattage... it is 3 watts with both channels (1.5 each) i want it to be able to drive atleast 30 watts... is this even possible without gettin another op amp? if i need more juice for 30 watts.. i can always switch up to 12V

[altec]

Honestly if I was you I would just build a new amp. A quick google search for amplifier schematics, and a order from Mouser will set you up with all you need! Heck, most of the data sheets for amps already have a schematic with them.

Just a thought. Good luck!

[Luke122]

www.41hz.com

Also, to get 30watts from a 5v amplifier? Good luck...

If you NEED 30 watts, then you might want to look at more sensitive speakers instead. My Ziggies run around 8watts, and they are ear bleedingly loud. 90+ db sensitivity will do that for you. :)

[dr.walrus]

Also, to get 30watts from a 5v amplifier? Good luck...


This.

1.) Power = volts x amps. So to get 30w @ 5v, you need to draw 6A. That would fry most small batteries instantly.

2.) Battery capacity. 30W of power is going to plough through batteries like noone's business.

3.) Existing components not powerful enough. You'll just fry the poor things trying to increase output power by a factor of 10.


Get something like this:
http://maplin.co.uk/Module.aspx?ModuleNo=220055

Dead easy to buy amps in kit form. It's basically a big op-amp.

Also be aware that op-amps tend to distort sound, giving a very very noticeable heavy, muddy bass sound.