mostly by shop nuthuggers, or people who don't know what the big 3 is, let alone how an alternator even comes into play with car audio...but for the longest time I couldn't tell these people why I wasn't getting a capacitor. Ever since I bought my alternator and my XS batt, I've been getting a flurry of "dude, just get a cap then you wouldn't have to spend all that money" or "man a cap would just cleared up all of that" and sometimes "man if you woulda got a (insert random # of farads) cap you could add more!". Now up until just a few hours ago, I couldn't remember why caps aren't helpful. Then I found this
http://www.teamswift.net/viewtopic.php?p=54856
Just to make sure I understood everything correctly, capacitors are ONLY useful if your electrical system is more than capable of handling the current draw from your amp, correct? And even then, caps only help with small spikes in current? I normally blow off the people who tell me I need a cap because I know they don't know what they're talking about, but I wanted to find out just exactly why they wouldn't help me in my situation. It's been bugging me for a while now, and I feel it's something I should add to my knowledge.
Hoping someone knowledgeable will chime in here and enlighten me.