Instructables
The psp is a great console, but its speakers lack a certain bass; a certain bass that I am going to give it.
 
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Step 1: Dissasembly

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The disassembly of a psp slim goes as follows:

1. Remove the four screws on the back side of the psp, plus two on the top and one on the bottom. The first four screws are identical, but the upper ones and lower one are different. Don't mix them up.

2. Lift the front cover. Pay attention to the start button, as it tends to fall off and wander away. Then, use a small clip or screwdriver to take off the home bar. Don't pull its cable, just take it off the screen.

3. Lift the screen and pivot it until you see the cables. Gently lift the tabs that hold the cables upwards and pull them off. Pull the home screen's cable upwards, then pull the cable off.

4. Remove the screen. Then, remove the screws nearby the triggers. After this, you can take both of the triggers out.

5. Remove the metal thingy that is located at the top edge of the psp.

6. Disconnect the dpad in the same way you disconnected the screen. Take the screw out as well. Remove any memory card and leave the access to the memory card fully open. Take the Dpad off. the R trigger button is slightly glued, but you can just peel it away.

7. Disconnect everything else from the motherboard and remove it by lifting the lower side up, then pulling it away.

8. Remove the metal shield (a thim metal sheet under the motherboard)

Step 2: Prepare Speaker location

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Right below the memory card, there is a space where a small speaker (but larger than the one the psp has) can fit; but you need to remove some thin plastic walls first. You can remove it whichever way you can. I personally just used a plier and bent it off.
codongolev2 years ago
can you post a photo of the +5v location? I have replaced both my speakers with four laptop speakers (and added synced lights), and though they sound great I can't turn it up all the way or else anytime a bass hit happens the whole PSP shuts off. I think it's trying to pull too much current directly from the CPU (because of the big speakers), and when the big drain happens it causes glitches and shutdowns.
actually, never mind. I just realized you have a slim. I have a phat. (unless you know where to find +5v and ground on a phat...)
Michael Chen (author)  codongolev2 years ago
The ground in here is better than the one on the other link, but use the 5V supply of the first link in the other comment.

http://www.acidmods.com/forum/index.php/topic,18429.0.html
Michael Chen (author)  codongolev2 years ago
Here ya go

http://www.acidmods.com/forum/index.php/topic,28600.0.html

This is a diagram for a different mod, but you can see the location of the 5V and the gnd line. You will need some type of amplifier, 5V amplifier, and test it first outside the PSP; if something doesnt work its easier to work it out outside.

I dont own a PSP phat so check first if there is enough space for the chip.

If I am not mistaken, what you are looking for is a non inverting amplifier that can drive all speakers. If you use the TL072, it wont get to its maximum potential volume (assuming 4 speakers) but it wont turn off the psp during a bass note)

Did you connect two speakers to the left side and two to the right side, or four two one side?
mykacanada2 years ago
After drilling holes i heat glued a fine sheet of cloth to keep dirt and debri out.
zarthrag2 years ago
I would imagine, for all the folks who use memory cards instead of UMDs, that the disk drive area would make for a *very* nice place to install a passive crossover, and a mini "subwoofer." In combination with this mod, it would sound even more amazing.
i uzes umd D:<
Michael Chen (author)  zarthrag2 years ago
Expect this soon