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what causes thump?


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nixon75 
Member - Posts: 27
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Joined: October 23, 2005
Location: Philippines
Posted: December 31, 2005 at 5:38 AM / IP Logged  
what causes the thump sound evrytime i turn on my head unit?
menace2sobriety 
Silver - Posts: 394
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Joined: October 29, 2005
Location: United States
Posted: December 31, 2005 at 5:54 AM / IP Logged  
Are you running amps? What brand, on an amp its the "soft start" the is supposed to keep that from happening few amplifiers still don't use them. some are cheap components that sill let it happen. But it does not hurt you're speakers when you hear this thump
geepherder 
Platinum - Posts: 3,668
Platinum spaceThis member consistently provides reliable informationspace
Joined: October 27, 2003
Posted: December 31, 2005 at 8:45 AM / IP Logged  
Yes, what vehicle, equipment, etc.  It sounds to me like an amp turn on pop.  You can do a search on google for turn on pop eliminators.
My ex once told me I have a perfect face for radio.
stevdart 
Platinum - Posts: 5,816
Platinum spaceThis member has made a donation to the12volt.com. Click here for more info.spaceThis member has been recognized as an authority in Mobile Audio and Video. Click here for more info.spaceThis member consistently provides reliable informationspace
Joined: January 24, 2004
Location: Pennsylvania, United States
Posted: December 31, 2005 at 10:18 AM / IP Logged  
You can use one of these.  Or, if you are electronically-inclined, go to the relay section of this site for info on how to build a relay with a time delay.
Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.

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