DC Offset
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DC Offset
At the begining of the summer I did a complete stereo upgrade on my A6. More information can be found (https://forums.audiworld.com/audio/msgs/52253.phtml).
Throughout the summer I have been discovering some things about my install that I have not liked. I have fixed some of the problems. (Mostly just involved in the poor quality of some mp3s on my player and unplugging the rear speakers).
However, there is one things that has been puzzling me.
Whenever I turn the radio on/off (alot more noticable when turning off) I get a poping through the speakers/sub. I have been told this has to do with DC offset.(my amp does have the delay).
I have talked with Avincar and we got to that it had something to do with the RCAs coming from the HU (or thats what I understood it as).
I have tryed to do some more research online and have only come up with detailed dc offset diagrams. (cannot completely understand with the knowledge i have of car electronics).
I am planning to do some work on my car this weekend and would love to get this problem fixed while I am "under the hood".
Any help would be greatly appreciated.
Throughout the summer I have been discovering some things about my install that I have not liked. I have fixed some of the problems. (Mostly just involved in the poor quality of some mp3s on my player and unplugging the rear speakers).
However, there is one things that has been puzzling me.
Whenever I turn the radio on/off (alot more noticable when turning off) I get a poping through the speakers/sub. I have been told this has to do with DC offset.(my amp does have the delay).
I have talked with Avincar and we got to that it had something to do with the RCAs coming from the HU (or thats what I understood it as).
I have tryed to do some more research online and have only come up with detailed dc offset diagrams. (cannot completely understand with the knowledge i have of car electronics).
I am planning to do some work on my car this weekend and would love to get this problem fixed while I am "under the hood".
Any help would be greatly appreciated.
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Joined: Jul 2002
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I am also getting the "turn off" pop, but not turn on pop.
only intermittently. Sometimes it pops, sometimes it doesn't. I am using the Zapco Symbilink transmitter behind the radio and converting to rcas next to the amps in the trunk.
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here is my plan of attack...
Ok...im just gonna run through some ideas I will probably try this weekend. I will of course follow this up with what happens.
-recheck all the wireing behind the HU...again
-possibly recrimp some connections
-possibly retape some connections
-disconnet/reconnect rcas
-check to make sure that the head units ground point is actually grounding....again
-im puttin in a new wire for the my blitzsafe adapter so i will double check everything for that too
Thats my list...nothing to technical and I am hoping (fingers crossed) that somehow my problem will be corrected.
-recheck all the wireing behind the HU...again
-possibly recrimp some connections
-possibly retape some connections
-disconnet/reconnect rcas
-check to make sure that the head units ground point is actually grounding....again
-im puttin in a new wire for the my blitzsafe adapter so i will double check everything for that too
Thats my list...nothing to technical and I am hoping (fingers crossed) that somehow my problem will be corrected.
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Joined: Jul 2002
Posts: 756
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good luck. let us know how it goes
I have been to lazy to take the car apart lately. I know I wired everything correctly, so I'm gonna guess it may be some ground issue (seat-belt bolt?), but that does not explain why it only pops sometimes and not always. So, maybe it's a radio issue.
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Joined: Apr 2006
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No luck for me...
I did everything I thought may have an influence and I still get the pop. I guess I am just gonna have to live with it.
At least I got so good things done during process...hardwire gps, put in longer aux wire and epoxy on the stuff I had previously hot glued.
***FOR EVERYONE THAT MAY HAVE AT SOME POINT USED HOT GLUE ON SPEAKER COMPONENTS IN DOORS...IT WILL NOT WORK...MINE WAS LITERALLY FALLING OFF WHEN I TOOK THE PANNELS OFF TO EPOXY THEM ON (2 PART EPOXY WAY TO GO).***
At least I got so good things done during process...hardwire gps, put in longer aux wire and epoxy on the stuff I had previously hot glued.
***FOR EVERYONE THAT MAY HAVE AT SOME POINT USED HOT GLUE ON SPEAKER COMPONENTS IN DOORS...IT WILL NOT WORK...MINE WAS LITERALLY FALLING OFF WHEN I TOOK THE PANNELS OFF TO EPOXY THEM ON (2 PART EPOXY WAY TO GO).***
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