Trying to plan ahead

[Beastums 10+ year member]

I'm close to putting together a build consisting of a JVC KW-HDR720 headunit, 4 MTX TN653 powered by a Sound Storm EV4.400 400-Watt 4-Channel amp and 2 Obsidian audio 12" D2 powered by a Hifonics Brutus BRZ1700.1D. this is all going into my 02 trailblazer and I'll be using 4 gauge wire all around. I'm at the point now where I'm getting worried about what I'll have to do with the electrical system to make it all work right. I was wondering if it was necessary for me to invest in any other components, and i do mean necessary, i dont really have a big enough budget to invest in improving everything but if there is something that will really cut down my sound quality and car performance please let me know. Thanks in advance

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[itsblown 10+ year member]

well the 100 lbs of subwoofers in the back will cut down your cars performance.. Might need to do big 3 to stop voltage drops other then that your good

 

[All_Logix 10+ year member]

It looks like between those two amps your going to be pulling somewhere in the range of 1750-2000 watts, Thats pretty hard on an electrical system. Like itsblown said do your big 3 for sure, also consider a better battery made for car audio applications

 

[Beastums 10+ year member]

i was pretty sure id have to go ahead and do the big 3 but what kind of battery should i be looking at, will something like the Kinetik HC2000 cut it?