The Apple diyMod: My Take on the Famous iMod [56k killer] Featuring 3G, 4G, 5G and nano 1G! - Page 15

What headphones are you using? I can't imagine wanting to listen to your iPod without an amp, since it would be so very loud. Wolfson says we can plug 16ohm headphones straight into the DAC. I wonder if that would be excessively loud. Though the Wolfsons allow you to connect your headphones straight, you normally have some sort of amp after the DAC anyway. How's it sound with the amp?

bobby001:

Yes, that's the iPod video. The signal in the original dock and the one that we are modding are the same one except that they travel through different paths. Personally I would remove the caps right after the DAC, but there are different ways of doing the diyMod.

1) Remove only the caps after the DAC.
2) Remove the inductors right before the dock.
3) Combine 1) and 2).

I personally did 3) because I wanted pads that were easier to solder to. At the very least, the diyModder should perform option 1) because that results in less signal being leaked all the way up to the dock. If you do just 2), then some of the electrons will travel all the way up to the dock, stealing some of the signal. In this case, jERiCOh is getting both the modded and unmodded signals at his line out (unless he did some more mods we don't know about), so I would only imagine that being bad for the sound. I don't know how that might affect it except for some sort of time deviation between the signals because of different paths, but I don't know if the time discrepancy is noticeable. Essentially, you don't want to do it that way. Maybe we're just splitting quarks here (okay, maybe not), but why unnecessarily introduce problems? Thanks for pointing that out, bobby. I noticed it but didn't give it any thought.

I do want to point, however, the good job jERiCOh did in routing his wires. Notice how they travel around the Wolfson, around the click wheel and that chip on the bottom right. I didn't realize this until after closing up the iPod but we're splitting tenths of millimeters here, and the wires can raise the front plate up, causing the click wheel to sink in. It gives the iPod user a bit of a different tactile experience, but I wouldn't recommend it. jERiCOh's is almost a perfect example of how to route the wires.

Ne vous on faites pas. Si nous ne savons pas, on demande, n'est-ce pas? (I'm assuming since you're sometimes in France you can read French )

The simple answer is that the Black Gates are far too big to fit inside the case. What you could do is similar to what ishtob did: you could drill some holes through the front plate of the iPod so that the caps stick out of the front. Not as visually pleasing, but pretty cool if you do it right. That way you get to show off your sweet caps too.

Ben, ça fait trop long que j'étudie. Je suis devenu parasseux avec ma grammaire.

Remember to send a postcard

The RWA/ALO collaboration only happened with the iMod 5G. Further, the iMod nano 1G only happened once as a custom job for drp. As for the dock, checking out Apple iPod dock interface pinout and signals @ pinouts.ru shows that there are no unused pins. Aside from that fact, ALO takes the line out signals from the same place as every other analogue iPod dock. The iMod 5G dock simply replaces the dock's output, such as jERiCOh has shown us here. If you can figure out a way to get the line out feed straight from the WM8975 to the dock, then do share. You could route the wires to the dock, but I couldn't tell you too specifically how. Send the feed from C53 to pin 3 and C54 to pin 4.