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I have this pro logic wen it in that mode or the next seting you can hear a fant high pitch sound in the back ground of the music wen you switch off the pro logic it gos away has anybody had this problem and do you know if it in the unit in the dash or the amp wear ever that is lol haven look for it yet 04 C70 Its not static wen playing all cd,tape,am,fm wen in the pro logic mode its like a electronic squeal wen I turn off any of the pro logic modes and play it on reg. stereo no noise the pro logic mode give you the surround sound<p><br><i>Modified by guiedo at 8:11 PM 7-25-2009</i><p><br><i>Modified by guiedo at 8:12 PM 7-25-2009</i><BR><BR>
<i>Modified by guiedo at 8:28 PM 7-25-2009</i>
 

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Kind of hard to read your post <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/wink.gif" BORDER="0"><p>What source do you have selected when it makes the sound? If it's FM/AM, Volvo recommends switching Dolby off as it will pick up the static a great deal more.
 
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