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The Apple diyMod: My Take on the Famous iMod [56k killer] Featuring 3G, 4G, 5G and nano 1G! - Page 28

post #406 of 3033
I just want to provide an update:

I removed the C53/C54 caps and the L/R inductors indicated in my picture. The pads from C53/C54 are bridged to the pads where the L/R inductors used to be by 30 gauge wires. I created a standard LOD with 220uf nichicon radioshack caps, and I am getting sound!

I will upload pictures tomorrow (or later today since its already 2am here). The re-route is VERY clean.

Jon or anyone who wants to chime in, one more question (hopefully my last). I'm kind of weary of removing the lower set of caps (the super small ones).

It seems like the signal is moving from "inductor" --> trace --> small caps --> trace --> stuff --> dock pins.

Would the small cap act as a bridge between the two traces? I mean, should I worry that the signal from the inductor won't reach the dock pins if I remove the small caps? How would I check for that before I remove it?

Thanks.
post #407 of 3033
x2...
post #408 of 3033
i had the same pcb type as Vvs, different from Christine had...after several test i found the right spot, L6 & L7...





sorry for the blurry photo's, i used my phonecell to get the pict...
post #409 of 3033
yay, finish on routing the bypass wires...





post #410 of 3033
Now you gotta work on your dock eh?

By the way guys, my dad and I modded a dock adaptor so we can charge play sync at the same time. DIY-Universal Dock Adaptor!!! The BADock!!!
Go take a look!
post #411 of 3033
Thread Starter 
CAvanessia and iQEM:

The caps are not connected in series with the inductors, so removing them won't eliminate your sound. Someone compared the path to a highway earlier, so in a sense the caps are providing an exit from the highway. They aren't part of the highway itself, but it does allow stuff to be removed from the highway, something we don't want. We want the fullest sound possible from the DAC, and having this particular exit from our highway will affect some of the high frequencies. Close the exit by removing the caps, and tell those charged particles the only way out is by going straight, into your amplifier.

KoKoKrunch:

That's a pretty sweet PCB. I like how the mini jack is incorporated into it. Looks like some good work.
post #412 of 3033
ahha the PCB and mini jack was part of the adaptor I modded! or else I would have incorporated everything into the PCB already.
post #413 of 3033
Or straight into the capacitors, creating a field that creates the accumulation of the negative of the accumulated charge, so, its not exactly the same electrons flowing. but who can differentiate between them, so what's the difference, ha? :P this is where the high pass filter comes from.. with low frequencies, there is almost enough time for a certain maximum charge to almost accumulate, which slows the whole process down, basically stopping more accumulation, hence, the dc blocking effects, or low frequency attenuation effect of the cap.. bla bla.. <shoots himself>
post #414 of 3033
Here's my "completed" and almost-internal 1G Nano diyMod! Essentially I took all of Joneeboi's advice and applied all of it to my nano. "Keep it simple" is the philosophy that I tried to keep throughout the mod.

It took me a while to complete it, because no one knew the precise locations of the original line-out inductors for the 1G nano. I have highlighted the right ones for my version of the 1G nano (iQEM and some others have another version). There was a lot of testing, but I think it is worth it to any DIY-er in the end to finally nail down the last piece of the puzzle for any project.

In summary, I took off C53/C54, took off the inductors in the photo, and took off the super small capacitors (see pics). This is VERY clean and very EASY to do. Once all the parts are removed the pads are at surprisingly easy to reach areas of the nano. The original line-out inductors are well-separated from the other chunk of inductors.

My black gates are coming in on Thursday, so I will have an ALO-style diyMod dock with the caps in the dock. I have a pair of 0.47uf, 4.7uf, 47uf, and 220uf black gates coming. Most likely I will only use the 47 and 220uf pair. If anyone has any interest in the other two, please shoot me a PM. Also, I will have excess iPod dock connectors too.

I might order some soniccaps conditional on VVS' later impressions, so I'm never going to be done with my diyMod. Even though I'm not done, I would like to thank joneeboi for his patience while answering hundreds of my PMs and everyone else who participated in this thread.

Some pics:


post #415 of 3033
Thread Starter 
Any time, CAvanessia. I thank you for exploring the dock option. Those are some very revealing photos, which will help when other diyModders take on the diyMod nano 1G. Let us know if you come across any other iPods

I have an iPod mini that is lacking a large capacity compact flash card. Once I get that card, I'll explore the diyMod mini.
post #416 of 3033
Quote:
Originally Posted by KoKoKrunch View Post
Now you gotta work on your dock eh?

By the way guys, my dad and I modded a dock adaptor so we can charge play sync at the same time. DIY-Universal Dock Adaptor!!! The BADock!!!
Go take a look!
nice DIY KoKoKrunch, i'm gonna try em as well



Quote:
Originally Posted by joneeboi View Post
CAvanessia and iQEM:

The caps are not connected in series with the inductors, so removing them won't eliminate your sound. Someone compared the path to a highway earlier, so in a sense the caps are providing an exit from the highway. They aren't part of the highway itself, but it does allow stuff to be removed from the highway, something we don't want. We want the fullest sound possible from the DAC, and having this particular exit from our highway will affect some of the high frequencies. Close the exit by removing the caps, and tell those charged particles the only way out is by going straight, into your amplifier.
OK, thx...already remove C53/C54 (duo Z) & L6-L7 smd's...

Quote:
Originally Posted by CAvanessia View Post
Here's my "completed" and almost-internal 1G Nano diyMod! Essentially I took all of Joneeboi's advice and applied all of it to my nano. "Keep it simple" is the philosophy that I tried to keep throughout the mod.

It took me a while to complete it, because no one knew the precise locations of the original line-out inductors for the 1G nano. I have highlighted the right ones for my version of the 1G nano (iQEM and some others have another version). There was a lot of testing, but I think it is worth it to any DIY-er in the end to finally nail down the last piece of the puzzle for any project.

In summary, I took off C53/C54, took off the inductors in the photo, and took off the super small capacitors (see pics). This is VERY clean and very EASY to do. Once all the parts are removed the pads are at surprisingly easy to reach areas of the nano. The original line-out inductors are well-separated from the other chunk of inductors.

My black gates are coming in on Thursday, so I will have an ALO-style diyMod dock with the caps in the dock. I have a pair of 0.47uf, 4.7uf, 47uf, and 220uf black gates coming. Most likely I will only use the 47 and 220uf pair. If anyone has any interest in the other two, please shoot me a PM. Also, I will have excess iPod dock connectors too.

I might order some soniccaps conditional on VVS' later impressions, so I'm never going to be done with my diyMod. Even though I'm not done, I would like to thank joneeboi for his patience while answering hundreds of my PMs and everyone else who participated in this thread.

Some pics:


x2

Quote:
Originally Posted by joneeboi View Post
Any time, CAvanessia. I thank you for exploring the dock option. Those are some very revealing photos, which will help when other diyModders take on the diyMod nano 1G. Let us know if you come across any other iPods

I have an iPod mini that is lacking a large capacity compact flash card. Once I get that card, I'll explore the diyMod mini.
nice, looking forward for picts... and as Christine, thx for make it more clear to all of us joneeboi... i never get anywhere without your thread here...
post #417 of 3033
Hey, if anyone tries the way I modded my iPod, the one that has caps inside the 4G, can they try plugging into the headphone out and dock and then switching A-B-A-B if possible. Because after pretty extensive burn in of 40+ hours, the headphone out again still has zero difference compared to the dock line out in such a comparison. It's really strange =\

Oh and Merry Christmas eve by the way everyone.
post #418 of 3033
Quote:
Originally Posted by joneeboi View Post
Any time, CAvanessia. I thank you for exploring the dock option. Those are some very revealing photos, which will help when other diyModders take on the diyMod nano 1G. Let us know if you come across any other iPods

I have an iPod mini that is lacking a large capacity compact flash card. Once I get that card, I'll explore the diyMod mini.
I have access to an 80gb video, but its already too big for me to lug around without an amp.

My cousin wanted me to mess with her 4gb mini, but he probably won't want to buy an amp to go with it.
post #419 of 3033
Thread Starter 
*sigh*

There is a difference, you just aren't hearing it. Clearly, the headphone jack and line out signals pass through different amps. Just because they sound "the same" doesn't mean they are the same. It's probably that your setup doesn't discern the differences that well and you just can't hear the difference. They sound the same, but they aren't identical. What are you so worried about?
post #420 of 3033
Thread Starter 
Quote:
Originally Posted by CAvanessia View Post
I have access to an 80gb video, but its already too big for me to lug around without an amp.

My cousin wanted me to mess with her 4gb mini, but he probably won't want to buy an amp to go with it.
What you could do with the iPod mini is to take the signal from the click wheel-controlled caps and put it through 220uF capacitors. Then you can disable the headphone out and send the signal from the caps to the jack. I wonder if there is any other digital stuff we have to mess around with to get it to work, but it's worth a shot.
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