8bitcollective

This works only with DMG?

dmg means normal gameboy?
right so for this mod i just unsloder them 2 wires
and connect the 2 wires acroos where you have shown?

whcih end of the 1 and 2 needs desoldering?
the ones that you have shown?

What kind did you buy, jack or phono?

The headphone pcb is really only necessary if you want to keep the internal speaker and/or have an output suitable for headphones, otherwise you can get L, R and GND directly off the pot. I didn't notice any DC offset issues with this but you could always wire a couple of caps into the signal path if you want.

There are five pins on the volume pot, you want the bottom three pins ( I only labeled 3 and 4). Connect the third (L) to pin 2 on your headphone socket, the fourth (R) to pin 3 and the fifth (GND) to pin 1.

Thanks Nanogrrrl. And Lameboy for the pics. Those helped. I got one of my four DMGs Prosound'd now thanks to you guys.

Just BTW, have you guys ever encountered a DMG with Phillips-head screws? The one I just modded had Phillips, that was the only one I've been able to get into. My other 3 DMGs are all triwing screws. I just thought that was kind of weird.

Next I'll try one of those female 1/4"/TRS jacks. That looks pretty cool.

can anyone post examples of music where they are normalized to equal volumes?

Nanogrrrl has a DMG sound comparison on this site. And Herbert's Comparison page is the best out there right now.

Oh yeah, and since I don't need the speaker, would it be possible to wire an LED in its place? I've always wanted to do that. I think I might need to sand down a little bit of the inside so I can get more light.

Will that affect my sound though? I don't really want to do it if it's gonna sound really bad.

When you say "original Nintendo PSU" you mean the battery pack that nintendo made for the DMG?  that you can't use while plugged in?  Or is there another psu I don't know about...

nanogrrrl wrote:

If the speaker switching is still enabled you might want to solder a 10 ohm resistor in its place just so the output stage has a load in case you ever want to revert the mod. The prosound output gets the signal before the DMG-AMP IC so it's unlikely it will affect the sound.

Wait...you mean PCB -> resistor -> LED?

hmmm i'd like to do the mod but keep the internal speaker AND the original plug (since i always use headphones when i'm making music) except if there is a way to use the pro-mod plug for headphones in which case I'll just replace the original plug...

Is that possible? and if yes, erm, what's the way of doing that?

thnx
/acro

wicked ^^

thnx herr

::waiting patiently for the tut::

nonfinite wrote:

nanogrrrl wrote:

If the speaker switching is still enabled you might want to solder a 10 ohm resistor in its place just so the output stage has a load in case you ever want to revert the mod. The prosound output gets the signal before the DMG-AMP IC so it's unlikely it will affect the sound.

Wait...you mean PCB -> resistor -> LED?

Could you clarify what you mean? Forget what I said above about adding a load resistor in place of the speaker, it's probably overkill.

It is possible to connect an led directly to the speaker terminals, but the current is so low on the gameboy it will not light. I have added leds to speaker pins on circuit-bent toys so that the led lights in time with the sounds.

acrocosm wrote:

hmmm i'd like to do the mod but keep the internal speaker AND the original plug (since i always use headphones when i'm making music) except if there is a way to use the pro-mod plug for headphones in which case I'll just replace the original plug...

Is that possible? and if yes, erm, what's the way of doing that?

Just fit a second jack socket wired directly off the volume pot pins. The hard part is fitting the socket once you find one small enough. Initially I had a trailing jack socket. Maplin used to do a really small profile chassis-mount socket but have stopped selling them now. I never use headphones unless tracking vocals but I can see the advantage of having both on the gameboy.

ok completely ignorant electronics noob question:

i'm doing the mod atm. i just opened a hole to fit the socket. it's this one. which pin is L and which one is R and ground? I would thought the long one is ground, is it? or is it just for screwing it to whatever? also does it matter if i solder L on the pcb to R on the socket?

and based on my last question, one is L one is R anyway (in general not for the mod specificaly). What it the point of knowing which one is which??

thnx

sry if my questions are ridiculus but i know nothing at all about that kind of stuff. i just have surgeon hands and i'm good at crafts ^^

.


edit: nvm i figured things out and i did it successfully ^^

Last edited by acrocosm (September 15, 2007 10:55 am)

AnimalStyle? nonfinite? what did/do they do? i did what nanogrrl suggested me. i trust her you can't go wrong with hed advice ^^

well, with nanogrrl's pic the only hard thing is to figure out which pin on the jack is r,l,g

Also I don't remember who said that but someone stated she/he (i think it was nanogrrl again) was using old IDE cables. Great idea, it works perfectly well


If you don't mind I'll insist on an answer of what is the purpose of knowing which is left and which is right on speakers, headphones etc? Is it merely for referencing purposes like "this is called a chair", "that is called a cup"?

Yeah it is as stupid as it sounds but I'm seriously curious to know because I remember me child and having friends, sis, etc teasing me if I was wearing the headphones "the wrong way" ^_^

Very great~!
Keep up the great work~!

Thanx nanogrrrl! l've just done this prosound mod, and my DMG sounds a bit better. cheers)

Kurisu Bearcub wrote:

i did this mod just a few minutes ago, and the headphone jack still seems usable (though not as loud).  Did I do it wrong?  Also, I noticed that when i turn the volume knob all the way up, it pans the sound a little higher to the left. Anyone have any ideas why this might be?

The prosound out does work softly with headphones.  It's loud enough to use if you're not on the subway or something.

As for the volume knob messing with the output, I've had that happen with two different DMGs.  It's just a wonky volume knob, not a result of your prosound mod.  It probably does that for the headphone out as well.  If someone knows how to fix that I'd be interested as well.

acrocosm wrote:

ok completely ignorant electronics noob question:

i'm doing the mod atm. i just opened a hole to fit the socket. it's this one. which pin is L and which one is R and ground? I would thought the long one is ground, is it? or is it just for screwing it to whatever? also does it matter if i solder L on the pcb to R on the socket?

and based on my last question, one is L one is R anyway (in general not for the mod specificaly). What it the point of knowing which one is which??

thnx

sry if my questions are ridiculus but i know nothing at all about that kind of stuff. i just have surgeon hands and i'm good at crafts ^^

.


edit: nvm i figured things out and i did it successfully ^^

Hey man, i'm gunna use the exact same jack. Which points were which in the end? If possible do you have a pic?