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good job, VVS_75! Impressions would be great too relative to the sonicaps.
edit: just saw your reply. I ordered 4.7uf sonicap gen I's and 0.1uf gen IIs yesterday. I made my case before I left for school. All I need to do is just solder a few leads hopefully. =)
Good! I just ordered mine today. Sorry forgot to let you know.
I just looked over the iPod mini, and I can't find where the line out signal goes to after the chip. Normally, the coupling caps sit right next to the Wolfson, but I don't see it anywhere around it. I tried finding it, but I'm having trouble. Maybe you guys can help me here. The line level signals come from pin 16 and 17 according to the WM8711 datasheet. I can't see where they're going. Those giant caps give us the click wheel-controlled signal. If it's too much trouble to find where those ones go, one can just replace the yellow caps and turn the click wheel volume all the way up. The left cap, C86, is the right channel, and the right cap, C87, is the left channel.
__________________
"Ears that hear and eyes that see - the LORD has made them both." Proverbs 20:12
Team University-fi | Team Edmonton-and-Surrounding-Urbanities(1)(2)
Here are two pics of my enclosure. I bought it at a "dollar store" for $1.50. It's made of steel and the top slides off. Also I bought this "eyelet" tool that allowed me to make those holes. All the wires are installed permanently in the enclosure with hot glue. I left the wires extra long inside for the parts that I'm waiting for.
I bought a pair of Nichicon (radio shack) 1000uf 50V caps for a few bucks just to try them out against the BGs.
Note. I know the setup is NOT for stock iPods, but I had to plug my 80gb video for the photo since my diyMod Nano was charging.
edit: Jon, I will see if I can bum the mini from my friend and see what I can find out. Although I probably won't be much help. =D The mini uses a CF card? Interesting. I thought it was hard-drive based.
Last edited by CAvanessia; 01-04-2008 at 05:15 AM..
The iPod minis were hard-drive based (CF II), but CF I dropped in perfectly, increasing battery life by a couple hours, though to be fair, the tests in the link were done with a different battery as well. Originally they came with Seagate Microdrives, but those turned out to be rather problematic. A 16GB CF card in an iPod mini would be a pretty decent player even by today's standards. Though their ticket price may be a bit high, higher capacity cards usually end up having the best value per GB. Here's a relatively cheap one with a quick glance through Google.
__________________
"Ears that hear and eyes that see - the LORD has made them both." Proverbs 20:12
Team University-fi | Team Edmonton-and-Surrounding-Urbanities(1)(2)
I'm sure as long as the battery meets the required specifications, genuine or not is irrelevant. I'm just wondering how you think you'll fit that battery into the nano. Are you going to tape it to the back?
Originally Posted by CAvanessia
iQEM, I think that battery is for the 1st gen big iPods You could route the battery on the outside, try to fix some small BGs at the spot where the battery was, and route the signal to the headphone out. This wouldn't increase the size by that much.
Jon, have you messed with your iPod mini yet? I might be able to buy one off my friend for dirt cheap since he has 5 iPods.
ooops, i thought that was for nano 1st GEN...my mistake... silly me lol
Which iPod are you looking at? I posted all the datasheets of the known Wolfsons on the OP.
i think i will go for 3rd or 5th generation since i would love to have the capacitors inside the ipod.
hq line in AND out would be awesome..
thanks for the datasheets, didnt see them at first.
edit: just checked the datasheets. it seems like only mini 1G and ipod 3G is capable of line-in.. are all those wolfson comparable regarding the quality of line-out?
The iPodlinux site lists the WM8731, but the image above clearly indicates WM8711 in the mini. Your call.
I checked the datasheets again, and they all have audio inputs. I don't know all that is required for a line-in, but if you check page 5 on the four datasheets, they all indicate pins for audio inputs.
WM8731
Pin 23 - Right Channel Line Input (AC coupled)
Pin 24 - Left Channel Line Input (AC coupled)
WM8731
Pin 23 - Right Channel Line Input (AC coupled)
Pin 24 - Left Channel Line Input (AC coupled)
WM8971
Pin 25 - Single Ended Microphone Input
Pin 27 - Right Channel Input 1
Pin 28 - Left Channel Input 1
WM8978
Pin 1 - Left Mic Pre-amp positive input
Pin 2 - Left Mic Pre-amp negative input
Pin 4 - Right Mic Pre-amp positive input
Pin 5 - Right Mic Pre-amp negative input
Pin 19 - Left Auxiliary Input
Pin 20 - Right Auxiliary Input
Now, I don't know if you were already aware of this and I'm just beating you over the head with the information you already have, but here it is anyway. Perhaps someone can enlighten me on the differences.
And as for line out quality differences between models, I really couldn't tell you. I've been tweaking my system so bad it can't breastfeed our children anymore (Arrested Development anyone?), so sonically I couldn't compare them for you. Let's not even get into the subjectivity of all reviews. Just rest assured you're getting almost the best performance your DAC is giving, and the weakest links in your audio chain become the amp, headphones, cables, etc.
__________________
"Ears that hear and eyes that see - the LORD has made them both." Proverbs 20:12
Team University-fi | Team Edmonton-and-Surrounding-Urbanities(1)(2)
Is it better than Sonicap dock? We'll see. Its BG so they need forever to settle down! 
You could route the battery on the outside, try to fix some small BGs at the spot where the battery was, and route the signal to the headphone out. This wouldn't increase the size by that much.
silly me lol
