sonicbob Posted December 21, 2007 Report Share Posted December 21, 2007 I've been looking but couldn't find any help for this on the site.. I've been trying to stop the "hiss" when my D3 is attempting to give me directions. After I put a destination into the system, and when it attempts to give me directions, I hear a 3 second "hiss" I've already turned down my "Guidance Volume" and "Beep" and turned off the "Guidance" but still this damn unit keeps reminding me that it wants to tell me something with a loud hiss. I thought it used to be the DVD reading the directions, but the noise still is there even when I removed the DVD and it goes into memory navi mode. It' has something to do with the Guidance.. My current set-up is through a Bose System through the stock amps...and seems to be grounded perfectly. I just have this rediculous hiss everytime i program a destination. Can someone help? It's almost so bad I want to return the unit. Quote Link to post Share on other sites
sonicbob Posted January 2, 2008 Author Report Share Posted January 2, 2008 bump for response.. Quote Link to post Share on other sites
whtcrxghst Posted January 2, 2008 Report Share Posted January 2, 2008 Have you tried a different bose adaptor? Quote Link to post Share on other sites
sonicbob Posted January 2, 2008 Author Report Share Posted January 2, 2008 No I havne't....I got my bose adaptor from Circuit City who installed it for me...do those matter? Quote Link to post Share on other sites
HiFiSi Posted January 2, 2008 Report Share Posted January 2, 2008 It would matter a lot if it's a faulty adapter. Quote Link to post Share on other sites
sonicbob Posted January 2, 2008 Author Report Share Posted January 2, 2008 but the sound only comes out when the navigation voice prompts are suppose to come on...and everything else is fine...also, AM Radio sound quality is horrible with alot of hissing in the background... Does this all go back to the Bose Adaptor? Quote Link to post Share on other sites
cntrylvr79 Posted January 3, 2008 Report Share Posted January 3, 2008 3 words for ya. Take it back. Have them fix the problem, especially if you paid them to install it. Quote Link to post Share on other sites
sonicbob Posted January 3, 2008 Author Report Share Posted January 3, 2008 I took it back to Circuit City already and of course they don't know what the cause is. I should mention that the radio is refurbished...i wonder if that has anything to do with it, but i've read about this problem with people who dont' have refurbished products... I think it has to do with the bose system/adaptor vs. the unit. Quote Link to post Share on other sites
elnonio Posted January 20, 2008 Report Share Posted January 20, 2008 If they are hooking up the amplified leads from the D3 to the Bose amp, you will get the hiss. You would also be unable to turn the volume past 10 or so. I had that issue when I installed the D3 in my 350z, with the Bose system. What you need is hook up the RCAs to the Bose amp, or the amplified leads directly to the speakers. By the way, in my case the hiss stopped, but now I get a constant whine that is not RPM dependent, but is low enough that you can't hear when playing music. Quote Link to post Share on other sites
RidinaZ Posted January 21, 2008 Report Share Posted January 21, 2008 hey i have a 350z too and installed w/ bose system. I got the hiss but went to the 7551 harness and it was good, but its really not loud at all. Do you still use it when its not loud? Quote Link to post Share on other sites
elnonio Posted January 22, 2008 Report Share Posted January 22, 2008 I originally got the 7550 harness, not realizing that it was nota pplicable to the Bose units. When I found out the problem, I just welded RCAs tot he harness, and plugged those to the RCA outputs. With just about any source, turn the volume to 40 and it's plenty loud. Now, the only issue is the low whine, and the fact that the Audiopilot kicks in and I just don't know how to turn that off now that the original HU is out of the car! Quote Link to post Share on other sites
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