quest Posted October 11, 2006 Report Share Posted October 11, 2006 I hooked my D1 up to test it and everythign works great except I get a slight amp thump through the stock subs when I turn the car off and the D1 powers down. Any thoughts?? Note this is a thump or pop when I turn the unit off. Ill have to go back and notice it it happens when I turn it on as well. Quote Link to post Share on other sites
sportsfan21 Posted October 11, 2006 Report Share Posted October 11, 2006 Too many volts are going to the amps. Ducatiboy makes a voltage reducer that should solve the problem, or I'm sure someone here can tell you how to solve it without buying an external device. Quote Link to post Share on other sites
cntrylvr79 Posted October 12, 2006 Report Share Posted October 12, 2006 What year/make/model is the vehicle? Quote Link to post Share on other sites
quest Posted October 12, 2006 Author Report Share Posted October 12, 2006 02 porsche 911. I experimented a bit and this is what I found. I have a very slight thump when changing sources and a fairly loud thump when turning the car off. Nothing when coming on. I do have the bose system with subs. Thanks! PS- Anyone know where the VSS wire is on this car? Quote Link to post Share on other sites
cntrylvr79 Posted October 12, 2006 Report Share Posted October 12, 2006 When you wired up the harness did you use the speaker wires from the avic harness or the rca plugs? THe car has a factory amp in it obviously. What you'll have to do is grab a cheap set of rcas and cut the ends off. Solder the ends to the speaker wires of the harness for the car. Then plug the rcas into the avic. Tape up the speaker wires from the avic so they don't short. As for vss try this. Speed Sense gray/pink alarm/door lock module Notes: The alarm/door lock module is under the driver seat. Quote Link to post Share on other sites
quest Posted October 12, 2006 Author Report Share Posted October 12, 2006 So basically drive the factory amp with a signal from the D1s RCAs instead of the from the D1s internal amp? Now the harness I am using ads 2 sets of RCA inputs, but they didnt seem to do anything. The factory radio simple output through speaker wires. The wirign pin diagram is actually on the top. Finally, will there be any harm besides the thump by keeping it this way, because it sounds pretty good. On the VSS what is the location? It is just the gray and pink wire under the seat? Thanks! [quote name="cntrylvr79"]When you wired up the harness did you use the speaker wires from the avic harness or the rca plugs? THe car has a factory amp in it obviously. What you'll have to do is grab a cheap set of rcas and cut the ends off. Solder the ends to the speaker wires of the harness for the car. Then plug the rcas into the avic. Tape up the speaker wires from the avic so they don't short. As for vss try this. Speed Sense gray/pink alarm/door lock module Notes: The alarm/door lock module is under the driver seat.[/quote] Quote Link to post Share on other sites
cntrylvr79 Posted October 12, 2006 Report Share Posted October 12, 2006 No real harm just the thump is all. If you're happy with the way it sounds then leave it. It's at the module under the seat. That's all the info my program gives me. I've never worked on one so I can't get any more detailed. Quote Link to post Share on other sites
quest Posted October 12, 2006 Author Report Share Posted October 12, 2006 Cool. So it sounds like to the factory headunit sends a low level signal through speaker wire to the amp and since I am sendign a high level signal through it thumps. DOes that sound right? As far as the RCAs so I have never wired a set tp speaker wires. I am guessing one wire will be the negative and one the positive. How do I tell which one is which? After this mod will the signal be very low and quiet? Also, are rcas on the metra harness good for anything? From lookign at the diagram I think they may be a line out??? Thanks! Quote Link to post Share on other sites
cntrylvr79 Posted October 12, 2006 Report Share Posted October 12, 2006 [quote name="quest"]Cool. So it sounds like to the factory headunit sends a low level signal through speaker wire to the amp and since I am sendign a high level signal through it thumps. DOes that sound right? [/quote] Sounds about right [quote name="quest"]As far as the RCAs so I have never wired a set tp speaker wires. I am guessing one wire will be the negative and one the positive. How do I tell which one is which? After this mod will the signal be very low and quiet?[/quote] Pretty much. When you strip the rcas the center conductor is positve and the outer is negative [quote name="quest"]Also, are rcas on the metra harness good for anything? From lookign at the diagram I think they may be a line out??? Thanks![/quote] Hard to say without seeing the harness. Quote Link to post Share on other sites
quest Posted October 12, 2006 Author Report Share Posted October 12, 2006 Good deal. I ll give it a try. My only concern is making the sound too low. The only thump that is really noticable is the one when you turn it off so we'll see. Thanks again. Quote Link to post Share on other sites
wratran Posted October 18, 2006 Report Share Posted October 18, 2006 i have the turn off thumb also on my system. I talked to the Ducati boys, they said their fix wont help...It is made for turn-on thump which is tooo much voltage to the factory amp. Turn-off thump is something different. I'm still waiting for a fix Quote Link to post Share on other sites
quest Posted August 5, 2007 Author Report Share Posted August 5, 2007 Can anyone tell me what parts I will need to create a delay for the headunit the will hold the power a few extra seconds? I believe this will solve the problem as my stock headunit stayed on for about 10 seconds after the car was turned off. The D1 does not do this. Thanks! Quote Link to post Share on other sites
bertom2000 Posted August 8, 2007 Report Share Posted August 8, 2007 I have the same problem. Everytime i shut off the car the speakers thump. Even with the radio off. Did you try hooking up the rca outputs like previously mentioned? or is it still hooked up to the other speaker outputs? Anybody have this problem? how did they fix it? I have a 2003 KIa Optima with a factory amplifier with the D! installed. Quote Link to post Share on other sites
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