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how to wire capacitors?

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=119614
Printed Date: May 15, 2024 at 8:00 AM


Topic: how to wire capacitors?

Posted By: mastermindz
Subject: how to wire capacitors?
Date Posted: January 25, 2010 at 1:21 AM

I have two capacitors wired up to my system and i wanted to know whats the best way to have them set up? At the moment i have my main power wire coming from the battery to the positive of one cap and then to the positive of the second cap and then to a distribution block and then to my amps, the grounds are set up from a body bolt to the first cap ground and then the second caps ground, and the grounds for my amps are seperate. Also i wanted to know if using different gauge wire would make a difference too, thanks

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Mastermindz



Replies:

Posted By: Steven Kephart
Date Posted: January 25, 2010 at 1:35 AM
Why would you use 2 caps? If 1 doesn't take care of your problem, then a second one won't either. It would be better to put your money into a solution that actually fixes the problem. But if you really want to run them, then you would want to run them in parallel.

As long as the smallest wire is sufficient for the current flowing through the circuit, then it won't matter if you use different awg wires.




Posted By: oldspark
Date Posted: January 25, 2010 at 2:10 AM
The caps should be next to the amps - or as close as possible.
Increasing resistance between the caps and target (amps) reduces their effectivness.
However, a cheaper battery will be more beneficial than a cap.




Posted By: mastermindz
Date Posted: January 25, 2010 at 11:57 PM
so if i have the main power wire go into the distribution block and then out to one cap each amp it would be better?? cuz when i crank it up all the way, my bass amp goes into protection mode but the vocal amp does not, would that have anything to do with that?

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Mastermindz




Posted By: oldspark
Date Posted: January 26, 2010 at 12:31 AM
Probably not - protection mode is probably not due to input voltage issues.

But caps are there to provide a low impedance "power" source for loads. so any resistance (such as long or thin cables, distro blocks - especially with fuses, etc) reduces their effectiveness.




Posted By: i am an idiot
Date Posted: January 26, 2010 at 10:05 AM
You need to check the voltage at the amp.  The amp must be playing at a level just below the level in which it would cut off.  When checking the voltage, you must have the black meter lead on the ground terminal of the amp.




Posted By: mastermindz
Date Posted: January 27, 2010 at 1:48 AM
so do i check the voltage on the terminals to the speakers or to the power terminal?? just asking

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Mastermindz




Posted By: oldspark
Date Posted: January 27, 2010 at 3:48 AM
Power terminals.
You'll probably get above 30V at the speakers....





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