Here's my test CD and files. Mostly I'd just use the pink noise, but the songs are there for listening tests.

Here's how the iPod typically sits while driving, maybe a little further back in. It's possible to tuck it all the way into the compartment when parked, so that it cannot be seen at all. To make this compartment I took the OEM cassette deck, gutted it, li

Until the TuneDok arrives I can just rest the iPod in the cupholder.

Here's an under-dash shot of the Belkin Auto Kit, additional cigarette lighter, the Sony XA-300 input switcher, and the back of the modified cassette deck adapter.

Here's an under-dash shot of the Belkin Auto Kit, additional cigarette lighter, the Sony XA-300 input switcher, and the back of the modified cassette deck adapter.

SPL meter all set up, ready for testing with some pink noise.

To do the testing I'd play a CD with a pink noise sample on it and adjust the volume to a known level using the main knob. (In this case 90.5db) Then I'd play the same file (which sourced the audio CD) from the iPod and adjust the level on the Auto Kit un