Voltage Drop Solvency

[blade624]

Hi, I am having some pretty serious voltage drop in my system. I am dropping from around 14.6v to as low as 10v...the power to my bass is being cut out at these points when it tries to hit hard, or my lights dim. My last set of woofers(MTX roadthunder series) where able to run half the RMS my new Fosgates have, and I really don't feel I am able to push them as hard as a can/want.

I am running a decent(I think) starter battery------http://www.oreillyauto.com/site/c/detail/SSBG/35EXTJ/07053.oap?year=2002&make=Subaru&model=Legacy&vi=50 16052&ck=Search_C0423_SSB_5016052_2657&mn=Super+St art&mc=SSB&pt=C0423&ppt=C0005

-I am running a stock alternator running 90 amp.

-I Have done a big three upgrade with 4 gauge wire as well.

-My amp is a 1200 watt(peak)/600RMS@4ohm(1200RMS@2ohm) JBL monoblock.

-2 Rockford P2's 4ohm, wired in parallel for a 2ohm final load(800wRMS combined max)

-micro farad scoche capacitor hooked up. I have a 2 farad vm audio hybrid capacitor on the way too(I know caps are controversial, but it was only 25 bucks)

-3.8 Cubic foot ported box

-My gains and Lpf are set as well as I can without an O scope.

My pocket really only allows me to get one component every paycheck, so I am wondering what I should upgrade first to mitigate voltage drop most efficiently.

Click to read more...

 

[Alejandro14]

you should get a better battery "bigger" agm .... or if you have space add a second battery ' that would help you stay at 12 volts but at 10volts your killing your car ... or save and get a alternator 160 would do it .

 

[Alejandro14]

i had same problem except i would drop low 11.4-5 with stock battery from oreilly was like 130' i have a memphis amp 1 ohm rated 1000rms ... all 0 gauge big 3 0 gauge ofc wire and a cap ... i bought a new optima yellow voltage hange lowest drop was 12.4-2... still low so i save up and got a alternator from mechman now my voltage at lowest at 3/4 of volume is 13.5 saving up to remove the cap that ***** and add a second battery '

 

[LosIsATool 5,000+ posts]

You have a problem. Either the install has issues or the tuning has issues. It's not the electrical