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When do I need a capacitor?

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=19612
Printed Date: August 18, 2025 at 3:49 PM


Topic: When do I need a capacitor?

Posted By: darwindarwin
Subject: When do I need a capacitor?
Date Posted: October 03, 2003 at 8:40 AM

My system is 500 watts, use to drive 2 subs. Do I need a cap?




Replies:

Posted By: noob
Date Posted: October 03, 2003 at 11:42 AM
you usually only need a cap when you're straining your electrical system.........if your headlights or interior lights dim when the bass kicks.....its a good indication that you need a cap or a high output alternator......but new alternators cost a lot......if you're only runnin 500 watts you should be fine unless you have a really old car that cant handle it..........



Posted By: fuseblower
Date Posted: October 03, 2003 at 12:57 PM

Caps stores power and are very effective when you are trying to get the most out of your amp for short periods of time. If your lights are dimming a cap will not help, as it is believed. An upgrade to your alternator is normally the solution when you want to run your system over a long period of time and still maintain maximum efficiency from your amp.




Posted By: superstreet786
Date Posted: October 07, 2003 at 8:11 PM
I always think having atleast one cap is a good idea.  It will always keep continuous power going to the amp and will not be putting such a load on the battery


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