Thread: 2010 E70 audio upgrade (El Dude returns!) IMAGE INTENSIVE
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Old 02-06-2010, 02:21 PM
el_duderino el_duderino is offline
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The attached PDFs are screenshots of the electrical output of the iDrive head unit, with the tone controls flat and playing a pink-noise test signal.

So we used the DSP equalizer in the Zapco DC650 to counter these curves (really, only the hi-volume curves, the low-volume auto-loudness EQ was fine to leave in place) and then we added some cabin-specific EQ settings. I didn't take screen shots of each step - we were running short of time, but I whiich I had - sorry!
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