Hi folks. My roommate had someone install some MB Quart speakers in the front doors of his S4, being driven by a PPI 4 channel amp. Problem is, they are distorting even at low levels and bottoming out. Anyone seen this before? He suspects that the tech wired the amp to the high-level outputs, not the line level.

Anyone have the correct pinouts for the line outputs? Its a 2000 S4 with the standard head unit.

TIA. =)<p><a href="http://registry.audiworld.com/audi/registry/details.asp?car=5099">A4 1.8TQMS Ebony/Onyx</a>
<I>"Such a smart piece of equipment with a wreck like me running it"</i>

Had the exact same problem with quarts running off the older Delta stock system. As an experiment, have them test the speakers with an aftermarket head unit and your amp, skipping the audi head unit and the line level converter. If it's anything like mine, the direct connection makes ALL the difference..and my guy used a beat up, cheap sony receiver they had lying around.

I then got the blaupunkt head unit and changer with red lighting to match the dash. 100% better, went great with the quarts. New head units aren't as expensive as you think..you've already got the expensive part, the amp and nice speakers..make them sound good with a good head unit and direct connection.

Rich

Yep, he has a nice 4-ch amp and good speakers, he just needs a decent aftermarket head instead of trying to run converters. In my case, the best available red-lit head was a blaupunkt sydney to replace the audi delta. It worked and sounded great. Not sure of the options for aftermarket on the symphony, but a decent head with a straight connection to the amp instead of via converters, powering the quarts is gonna sound great!

I had the same bad experience trying to power quarts via converters off the factory head. Instant difference with a different head. Good luck

Rich
'01 Nogaro, 12 hours and counting!!