Well, I am still working on getting the Phatbox installed. Here is the update.
I was able to obtain an MAZDA DMS cartridge off of ebay.
With the Mazda DMS cartridge in the Audi Phatbox, I was able to play through the Mazda5 headunit. When you press the "CD" source button on the headunit, it Displays "EX 1", and the Phatbox begins to play.
However, here are some of the issues that I have noticed.
While the track up and down buttons, random, and search forward/rev buttons work, the unit freezes up sometimes, and will not unfreeze even if you switch back to the In dash CD player, and try to go back to EX1 mode again. The only way to unfreezes seems to be turning the ignition switch all the way off, back on, and then restarting the vehicle.
The info display on the dash that displays the track/cd time will sometimes freeze, or display odd times, but it seems to "RESYNC" itself if you go up or down a track.
I am also unable to change the playlists, so I have to load all of my music on one playlist.
I am not sure if these problems would occur if you used a OEM MAZDA Phatbox, or a Mazda3, RX8, Mazda6, but I don't think the extra 500$ is worth the minor headaches I am having with my Audi Phatbox conversion.
My next project is to find out if I can mount the guts of the Phatbox, and install the cartridge assembly into the blank space where the modular cassete deck would mount. It looks like it can be done, and I think it would be sweet to have a removable 20gig cartrige right on the headunit. (Think --- 8-track player. LOL (stoned) )You would then need a hard drive ribbon cable running from the cartridge assy in the headunit, to the rest of the Phatbox guts, which could be mounted up in the dash or maybe in the glovebox. (Once you see how little stuff there is inside, I think you would cry if you spent $700 on it, and saw what was actually inside. (hah) )
Or i will just cut off the "extra" fins on the Audi heatsink, and stuff it up in the Glovebox where the DVD player is if you have Factory Navigation. I don't have Nav, so I do have the room in there, which is where the unit is now.
So for $130 for the Phatbox, $40 for Mazda3 install kit, and $80 for a Mazda DMS cartridge off ebay. = $250, not to mention, I now can ebay the Audi Phatbox cable, since I will never need, and get a few $ back.
Keep Zooming