Volts dropping

[BanginBass601]

I have 6 15s on a audiopipe 3000 with a mechman 270A alt, XS 3400 in front and two huge Deka batts in the back, my volts drop to high 10s low elevens on full tilt but wen I have a meter on my front batt it's only dropping to 13.7 on full tilt, am so confused any help would be great

Edited January 4, 2011 by BanginBass601

[Guest]

sounds like a loose connection at a fuse block or distribution block or a battery.

[BanginBass601]

Yea Thts what I thought but everthings good I checked it all

[Nathan @ XSpower]

Where are you reading the voltage drop at? Are your back batteries charged up and good? Check your voltage output at the alternator, front battery, and back battery bank. They all should have the same voltage. Check your grounds and make sure all of your connections/fuses are good. If your front battery is reading 13.7 at full tilt and your back batteries are charged and good, then you should not be dropping that low.

Edited January 4, 2011 by Nathan@XSPOWER

[BanginBass601]

Yea I checked every thing and the drop Is from the back batts, with no music on it has the same volts about but then wen I turn it up the back batts drop really bad, I'm trying to work on it now and the batt are charged good

[ingramcaraudio]

One thing that helped me with that was soldering all my terminals because i had drop from front to back and that helped me out a whole lot.

[Alex K]

I vote ditch the dekas and run like 2 more 3100s

[skittlesRgood]

what model deka's are they?

check voltage drop before and after every fuse block and connection. see if you can find the weak point.

what size wire and fuse do you have running front to back? are the back batteries grounded to the chassis or at the front battery?

[BanginBass601]

I have all zero gauge with 250 amp fuses and I have my batts grounded to my front battery.

I checked the voltage before and after the fuse hocks and only the one in the back was a little lower

[Sir-Lancelot]

would another run of pos and neg 0ga help?

I am curious to hear the solution of your problem too, as I have about a 1 volt drop from to back myself.

That said I am only looking at the volt meters and not testing with my DMM.

Edited January 6, 2011 by Sir-Lancelot