i need to buy a cap for my car. now my prob is they range from $130 to $200. is the cheaper on better or does it really matter. and does brand selection make a difference.

 

Three words ...

High

Output

Alternator

 

I was told I needed a new altenator for my system, 1800watt mono block, 200 watt digital amp, my new altenator is rated at 130 amps. Once its all put together I will be able to comment on if it needs a capicator. I'm hoping not since the ones I've seen cost $400.

 

Yes, that's quite a hefty system.

Your 'new' alternator...how much bigger is it than the stock one that came with the car?

 

Yes, that's quite a hefty system.

Your 'new' alternator...how much bigger is it than the stock one that came with the car? </font>[/QUOTE]the old one put out 50amps idle and 79 at higher revs, according to the mechanic that tested it

 

I think you should have went with a larger alternator if that amplifier is truly 1800 watts ... Like at least 150 A ...

 

Rule of thumb is that you need 1/3 your amps maximum current pull for them to work to full potential with music...

Caps may help your amps produce clean transients, but for the cost involved they are often a waste of time...

 

Is it true it's better to use a cap if you use deep cycle batteries?

 

what I would love to do is have both the new and old alternators running at the same time, that would provide enough power, what are the chances of that happening?

 

just so you guys know, there is one manufactuar of cappacitiors in the world, I believe its in chicago or somthing. One cap, thousands of kinds of shrinkwrap, didital readouts, and hardware, and fasteners. go figure!