HO Alternator or Capacitor

Hey fellas I'm back.  I bought 2 15" BMF's and a 1000D amp about a month ago, and it had been doing fine.  I had some light dimming, but I didn't think I would need to do too much to fix that.  However, in the past 4 days I've blown two subs.  I blew the left sub about 5 days ago, so I just went up to the shop and had em throw a new one in there, no big deal.  But the next morning I blew the brand new sub just a couple of minutes after I started the music.  So I've obviously got a major problem.  The audio shop thinks that I don't have enough power getting to the amp, so my subs are getting a distorted signal at high volumes and are blowing.  That sounds right to me, so the question is what to do about it.  I've got a 3 year warranty on everything so getting them replaced is no problem.  The people at the audio shop think that a cap will solve the problem, but I think they're wrong.  I think I need a bigger alternator, and hopefully that will solve the problem.  Any suggestions would be greatly appreciated.  And, if I end up going with the alternator, I will need help figuring out how many amps I will need.  Thanks.

First off, DON"T buy a cap or caps.

Yes your best bet is to upgrade your alt. as well as upgrade the wiring under your hood.

Blowing subs based on starving an amp like you have suggested seems rather unlikely, the more realistic problem sounds like the usual improper gain setting. Although it is possible to induce such a problem, the shop trying to sell you a cap is pretty low.

How did you set your gains? are you using any bass boosts or eq settings?

As a matter of fact, why don't you confront the shop (non-confrontational) and question their use of a cap as opposed to an alt upgrade. I think this should be done when a situation like this arises.  

Hmmm...well that sounds right.  I had the guys at the audio shop set the gains, and I haven't touched em except to turn on the low pass frequency filter at the suggestion of someone on here.  I haven't even looked at the gains because I knew if I did I would want to mess with them and I don't know what I'm doin so I don't wanna mess something up.  Honestly I think the guys up at the shop are trying to sell me a cap because they honestly think that will solve the problem...I think they're more just ignorant than mean, but I don't know.  I think the way to go is an alternator, but what wires do I need to upgrade under the hood?  I have heard of the "Big 3," but don't know exactly what that is.  I want to get this taken care of, but I've already spent more money than I ever wanted to.

http://forum.sounddomain.com/forum/ultimatebb.cgi?ubb=get_topic;f=5;t=007801;p=

That should help out.