power, how much do i need?

[boomsta 10+ year member]

okay i just got some stuff from Phoenix Gold and need to figure out what the hell to put in my expedition. i have a 130 amp alternator thats stock with my expedition and i'm running about 2500 watts. I will have stiffening caps and stuff too like four farads or something but i have no idea what the hell to do about power from the alternator. These amps are gonna be drawing like hell im sure. im gonna have like two of these things here: the phoenix gold OCTANE-R 15.0:1 (2 of these) and an OCTANE-R 8.0:4. Im running four fifteen inch titanium elites and a i have some other crap in there too like a voltge reader thingy and a big honkin *** EQ all PG stuff oh yeah and some 6.5" components. I think i might be rethingking the Octane R 15.0:1 and going with the Octane R 30.0:1 but for now im just needing to power the 15.0:1's any ideas as to where to even get an alternator for this kind of stuff that wont **** up my truck? Phonix Gold doesnt sell them any more so i need to get a beefy one. Can i just snatch up one out of like a cop car or an ambulance in a junkyard or is that just ****ing stupid. and also how many amps am i gonna need to run this stuff like a champ? thanks all, im new to this stuff so any help appreciated.

also is there a good angle to fire the subs so i dont phase out? a wall is not an option so the installer wants to fire them straight up PG said they will phase from a return sound wave reflecting off of the roof. any ideas on what angles will eliminate the phase factor. thanks again

Boomsta

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[holycrap 10+ year member]

wow..... I dont even know where to being.......

a ho alt would be good....might as well add a 2nd battery since you have mad cash

 

[boomsta 10+ year member]

please mad cash lol, not even close were broke as shit, we just got lucky to pick up some really good deals. I just didnt know what i should do for power. I was told by the installer i would need a beefed up alternator but thats not really helpful since theres so many different variations of them. Can i just get one out of the junkyard or is that a bad idea. I mean hell im poor a cop car would be nifty, but i dont know how thats gonna go over. but at any rate should i go for a 200 amp or will a 180 be fine. Are caps pretty much the same thing as extra batteries? Didnt know if there was a pro or con between batteries versus caps. thanks for the reply.

 

[holycrap 10+ year member]

you have 2 choces

#1 get a high output alt

#2 get your stock alt rewound for higher output

add a 2nd batt after you do one of those two

sine you are going comp, you wong be running your car during shows, and the more pwer the better

 

[marleyskater420 5,000+ posts]

please mad cash lol, not even close were broke as shit, we just got lucky to pick up some really good deals. I just didnt know what i should do for power. I was told by the installer i would need a beefed up alternator but thats not really helpful since theres so many different variations of them. Can i just get one out of the junkyard or is that a bad idea. I mean hell im poor a cop car would be nifty, but i dont know how thats gonna go over. but at any rate should i go for a 200 amp or will a 180 be fine. Are caps pretty much the same thing as extra batteries? Didnt know if there was a pro or con between batteries versus caps. thanks for the reply.

220amp alt...a yellow top...and then just....no caps...

 

[jbl_marshall21 10+ year member]

atleast 200 amp alt, then probably a yellow top battery (optima) and then no caps. they don't do anything anyway. could probably save u a few hundred dollars and get a nice alt.

 

[boomsta 10+ year member]

sweet thanks guys, i'll definately take that advice since it seems to be the rule of thumb over using a big ol cap bank. Are batteries much more expensive, cause i also have to buy one of those switcher doohickey things right? so it charges both batteires right? And get an optima yellow cap. Sweet, thanks guys.

Thanks for bearing with my stupid questions too i just got into stereo stuff like in september of this year (last month) so my questions are pretty basic.