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Message: <blockquote data-quote="kyheng" data-source="post: 966160" data-attributes="member: 13624">Well, I've check the forum, the first 3 pictures it never state how many watt of system is using. But i assume that the system is more than 1000watt. Without a cap the car system volt will drop to a very minimum at 9.8v, with a 1 farad the minimum is 11.6v, with a 50 farad the battery never load at all. These minimum peak is when the music bass is the highest on that time, the same time the alternator also cannot supply back enough power. If the battery starts to get old, the bass when hit at these time, the bass will not be deep like new battery can perform. On the 4th pic, the 50farad can perform best compare to the other 2 when on 1ohm load which is some subwoofer load at 1ohm. From here we can know that with a 50 farad cap the sub can perform best on 1ohm, not like the other. So sometimes the installer say when install a cap your woofer will have a deeper bass is true on some sence, but for true statement is with a cap your bass will not much affeted by the battery power as the cap is doing its job...</blockquote>

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