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thud through speakers


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yeroc 
Member - Posts: 7
Member spacespace
Joined: November 11, 2003
Location: Australia
Posted: November 11, 2003 at 3:20 AM / IP Logged  
have just reinstalled my mp3/cd head unit. and everytime a song changes or i press a button, a thud comes through the speakers. is this a head unit problem (somehow i dont think so). or have i stuffed up the install?
wvsquirrel 
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Joined: July 27, 2002
Location: Florida, United States
Posted: November 11, 2003 at 6:45 AM / IP Logged  
1st thing is to double check your ground for the headunit and the speaker connections. Did you use a harness or cut into the factory wiring?
Squirrel
"No more Cpt. Kirk chit chat"
If its too loud, then you're too old
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yeroc 
Member - Posts: 7
Member spacespace
Joined: November 11, 2003
Location: Australia
Posted: November 11, 2003 at 2:16 PM / IP Logged  
have tapped into the ignition for the power wires. have used a factory earth for the ground.  but i did try to test thr unit by tapping straight off the battery for + and - and it still did it
nedgeworth 
Silver - Posts: 264
Silver spacespace
Joined: November 03, 2002
Location: Australia
Posted: November 11, 2003 at 2:57 PM / IP Logged  
If this is in the same vechile, is there anything that you have done differently or changed?
yeroc 
Member - Posts: 7
Member spacespace
Joined: November 11, 2003
Location: Australia
Posted: November 12, 2003 at 6:18 AM / IP Logged  
no this is a different vechile. could it be somre sort of drain on the battery.  maybe its to small for the load?
nedgeworth 
Silver - Posts: 264
Silver spacespace
Joined: November 03, 2002
Location: Australia
Posted: November 12, 2003 at 2:43 PM / IP Logged  
You'll probably find that if you run a new ground wire you might remove the problem. But if it is doing it direct from the battery than i suspect it is either a low quality unit or there maybe something wrong internally.
wvsquirrel 
Gold - Posts: 1,237
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Posted: November 13, 2003 at 12:21 AM / IP Logged  
Try tapping the battery for the +, but ground the headunit (-) to the chasis of the vehicle (less then 3 feet away, clean bare metal). You normally don't run both + and - to the battery like you mentioned you tried above. Make sure you fuse you + wire within 18 inches of the battery with an inline fuse.
Squirrel
"No more Cpt. Kirk chit chat"
If its too loud, then you're too old
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DeathsJester12V 
Silver - Posts: 352
Silver spacespace
Joined: July 22, 2002
Location: United States
Posted: November 13, 2003 at 3:00 PM / IP Logged  
If it still happens...check the RCA connection
yeroc 
Member - Posts: 7
Member spacespace
Joined: November 11, 2003
Location: Australia
Posted: November 16, 2003 at 5:39 AM / IP Logged  
thanks to everyone for there help but i tried a new ground, and a different cont. wire, and still the same problem.  so i tried swapping to the old head unit and no problems what so ever.  it was be the head unit. again thankyou
nedgeworth 
Silver - Posts: 264
Silver spacespace
Joined: November 03, 2002
Location: Australia
Posted: November 16, 2003 at 2:31 PM / IP Logged  
No probs. thud  through speakers -- posted image.

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