lights dimming so whats the simple fix?

[Beastums 10+ year member]

title says it, my BRZ1700.1D powering my two obsidian audio 12 D2 and my ZRX1000.4 for my 4 vibe black air 6.5 components in my 02 trailblazer are eating through my power and noticeably dimming my lights when i have it cranked up. so my question is what can i do without having to drop too much to fix it, i havent set a budget yet but i do want a budget level fix that will work. after reading around im seeing stuff like replacing the alternator and/or adding a battery but im curious to see if there is a simpler and cheaper fix and if not im not sure what i need to look for in those two.

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[mylows10 5,000+ posts]

start with the big 3 then an extra battery and last an ho alt or at least something 60-80 amps bigger

 

[Beastums 10+ year member]

oh right, i have done the big three already with 0 gauge wire. so an extra battery is the first thing? would just replacing the one in there do anything or would it just make more sense to add one? the stock one is in there

 

[mylows10 5,000+ posts]

you can try replacing the stock first

 

[Eddie_24 10+ year member]

when i first got into car audio I ran a stock battery and then put another battery the same size as my stock battery in the trunk in a battery box and it kept my lights from dimming. But now I have a yellow top up front and a 16v capable shuriken battery in the back, and I use a stock alt. I'd say upgrading your stock battery first might make a big difference. If you've already done the big 3, then just put a stronger battery up front. I had the same BRZ1700 here recently and my lights never dimmed

 

[Beastums 10+ year member]

so what would i need to be looking at for the battery? using the power calc on the kinetik site that i heard about its saying i need 3 KHC1400 including replacing the stock one, that sounds kind of extreme to me

 

[Eddie_24 10+ year member]

You dont need 3 batteries and to replace your stock battery. Buy one strong battery and replace your stock one with it and see how that goes.

 

[mylows10 5,000+ posts]

2 batteries , no kinetic,1 group 31 ,like a xs d 3100 or stinger or odyssey pc 2150 and one for under the hood,same brand

 

[Beastums 10+ year member]

its really not the BRZ alone thats doing it, i was waiting to decide on my door speakers so for a little whiile i just ran the subs oin the BRZ and everything was fine, its when i added the ZRX to the mix that the lights started dimming. heres another odd thing, the lights on the ZRX amp also dim but the BRZ lights stay completely constant.

 

[mylows10 5,000+ posts]

you need more battery juice and maybe a relay on your remote wire

 

[Eddie_24 10+ year member]

BRZ amps are power hogs, believe me. They steal a lot of power from your batteries and charging system. I had the BRZ 1700 and a 2000 watt max 4 channel for my components/speakers... Upgrade your stock battery and add 1 battery in the back, the one that mylows10 suggested would be perfect. But like I said... the BRZ is a power hog and it sounds like its making your ZRX starve for power, so you need to do the battery upgrades for sure.

 

[05fronty 5,000+ posts]

you have that amp at .5 ohm? just curious

 

[Imtjnotu 5,000+ posts]

xs d3400

 

[RangerDangerV2 5,000+ posts]

xs d3100

fixd