Amplifying speakers need help

[fozzy.1990]

 ok, i know you guys are sick of hearing this but i need help with putting an amplifyer on my psp.i want the Lm286n on it but i need somebody to get me a diagram please. like one without the symbols and stuff, that confuses the hell outta me, just something simple for a noob to figure out. or at least a link to somebodies page that can help. please and thank you

[rceckspurt13]

Ok i hope this Helps:



The bottom diagram is the way that it syas to do it on acidmods, but the top one is a way that also works and dosent require any resistors.

[fozzy.1990]

which one gives better quality
and how would i ground it?

[VoX]

They would be around the same quality and you ground it by soldering off a ground point on the PSP

[rceckspurt13]

This picture shows the +5 volts as well as the ground:

[dxecuter]

for  my part, i already tried with the resistors one but it gave me kinda rly noisy crunchy sound when. otherwise there is sound from the music..etc..but bad
from there i always used the output directly to my speaker and i wish i could have something better than the normal psp output, i dont want it to be called amplified when its not, cuz i only use a bigger speaker with the same power......

[ra1n]

might might be the speaker is your problem

[crashman2k7]

nope ur missing a cap u need a 6microfared cap =)

[fozzy.1990]

were can i find a cap?
and where can i find the data sheet or a working diagram?

[rceckspurt13]

actually both of those will work. I took the bottom one directly from acidmods. The top diagram I've personally used and it sounds excelent. I don't know why your saying it won't work?

[dxecuter]

i actually never seen the datasheet of the lm386, but here it is..im wondering if the bass boost makes a real difference with a gain 50.... ill try it....and they say for gain 20 that it needs a 250 uF cap, but whats the difference when you put a 100 uF one? 

[rceckspurt13]

Well I don't know about the acidmods one, but I know the top way works great. I don't know what to tell you other than if it works, use it.  I don't know what the difference the 250uF cap would make. But the top way works fo sho.

[dxecuter]

oh ok thank you ^^ but why that 10k resistor on 3  isnt conected on serial , its like coming from source and then goin to lm386 AND to gnd...
 

[dxecuter]

so i dont rly need it. the psp volume's already makes the job....well ok thank you very much guys ill try this rly soon