Help with stereo problem.......
Help with stereo problem.......
I had my amp and sub install to my car several weeks ago. I have noted a a mild thumping sound evertime I turn the radio and the ignition switch off. Is there a way to correct this problem? or Is this a normal thing when you tap-into the existing BOSE System?
Any ideas to correct this minor problem. Thanks in advance for the help, if any given.
Any ideas to correct this minor problem. Thanks in advance for the help, if any given.
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Originally posted by foe:
<STRONG>I know this might sound stupid, but my pc Altec Lansing speakers do the same thing sometime, when i just kill the power switch.</STRONG>
<STRONG>I know this might sound stupid, but my pc Altec Lansing speakers do the same thing sometime, when i just kill the power switch.</STRONG>
Someday pigs WILL fly!
Joined: Nov 2000
Posts: 3,320
Likes: 0
From: Pequannock, NJ USA
It is a power surge from capacitors in the line....at least that would be my guess. Those are some of the things that prevent ground loops and humming and all. It's normal with any big amp.
Drifting
Joined: Nov 2000
Posts: 3,373
Likes: 0
From: Chicago, IL USA
Ok.. A couple of things effect this. I have a JBL 1200.1 and depending on how on the amp it might make this noise. I had a RF 800a2 and it made the noise regardless on install. However my JBL amp did not make that noise if I installed it a certain way. There are two ways to install the JBL amp. One way is use the power antenna to turn the amp on/off. If I used it this way it would make the noise. Another way is the JBL amp has a feature where if you dont hook up the power antenna to it. The Amp senses the volume coming through from the deck, and if it senses no music it automatically shuts off. This way gave no noise for me. What amp are you using?
Retired. Not available.
Joined: Apr 2001
Posts: 2,828
Likes: 2
From: Houston, TX
Originally posted by spiroh:
<STRONG>Ok.. A couple of things effect this. I have a JBL 1200.1 and depending on how on the amp it might make this noise. I had a RF 800a2 and it made the noise regardless on install. However my JBL amp did not make that noise if I installed it a certain way. There are two ways to install the JBL amp. One way is use the power antenna to turn the amp on/off. If I used it this way it would make the noise. Another way is the JBL amp has a feature where if you dont hook up the power antenna to it. The Amp senses the volume coming through from the deck, and if it senses no music it automatically shuts off. This way gave no noise for me. What amp are you using?</STRONG>
<STRONG>Ok.. A couple of things effect this. I have a JBL 1200.1 and depending on how on the amp it might make this noise. I had a RF 800a2 and it made the noise regardless on install. However my JBL amp did not make that noise if I installed it a certain way. There are two ways to install the JBL amp. One way is use the power antenna to turn the amp on/off. If I used it this way it would make the noise. Another way is the JBL amp has a feature where if you dont hook up the power antenna to it. The Amp senses the volume coming through from the deck, and if it senses no music it automatically shuts off. This way gave no noise for me. What amp are you using?</STRONG>
Burning Brakes
Joined: Feb 2001
Posts: 1,248
Likes: 3
From: VA
Originally posted by dfv3.2CL-S:
<STRONG>I had my amp and sub install to my car several weeks ago. I have noted a a mild thumping sound evertime I turn the radio and the ignition switch off. Is there a way to correct this problem? or Is this a normal thing when you tap-into the existing BOSE System?
Any ideas to correct this minor problem. Thanks in advance for the help, if any given.</STRONG>
<STRONG>I had my amp and sub install to my car several weeks ago. I have noted a a mild thumping sound evertime I turn the radio and the ignition switch off. Is there a way to correct this problem? or Is this a normal thing when you tap-into the existing BOSE System?
Any ideas to correct this minor problem. Thanks in advance for the help, if any given.
</STRONG>
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I have a Hifonics amp which is pretty old (8 yrs) but it has good power and it's pretty flexible. Thanks for all the info. I will look at the Crutchfield catalog for that part.
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