Is this bad wat can go wrong?

Question

hi i have 8 gauge power cable running to a splitter box then from splitter box is 8 gauge into a 500wat kenwood amp powering 2x 1500watt oversized kenwood subs that are bridged onto 2 channels and from the splitter is8 gauge again to another amp that is 400wat powering a 1200wat rampage sub off 1 channel and a pair or fusion 3way speakers that are 280watt off the other channel and it work good has lots of bass but is this bad wat can happen and how long untill things can go wrong , wen i have the car not running it sits on 13v i am using an oversized deep cycle battery to and wen i turn the sterio on it drops down to around 11.5v then wen i turn it up round 25-30 it starts hitting 10 volts and everythign dims very bad but wen car is running it sits on round 11 volts wen up around 25-30 so yeah i just need to no is this badd i dont really wanna upgrade power cable or get a capacitor either so i hope to get some decent comments back from this :)

Answer 1

I don't believe you will need a capacitor to start. To prevent dimming you need a better alternator that is higher in quality. More expensive without a doubt, but worth every penny. The battery and voltage is fine so don't worry about that. I suggest getting 4 guage wire from the battery to the splitter box, and then keep the 8 guage going to the amplifiers. I think that running a 500w amp that isn't monoblock to two 1500w max subs isn't a great idea, because overheating may occur quickly. The other amp is a bad idea also, because you never want to run a subwoofer on the same amp as speakers, because it's much more demanding. If it works and sounds good, and nothing is happening that is a bad thing, I guess keep it the way you're going. I see in the near future though, you needing a new amp, or having to take out a subwoofer. Good luck, I really hope it works out.

Answer 2

You are goin to need to upgrade the big 3 for sure to try and get better performance.  8 gauge is not going to cut it for 2 amps.

Answer 3

Try bigger alternator and a cap