normal voltage drop?

[Kastlez_ 10+ year member]

what car is it??what type of battery do you have up front? is it a small battery like a honda/acura or a normal size battery?

with your voltage meter do you drive and watch your voltage or is it just a dmm that you are using while the car is off or idle?

depending on how old the battery is the voltage drop you have seems slightly normal. you need to upgrade the battery under the hood or get a second battery. as for voltage drops i've seen my batts drop down to 11.2 on 2 saz1500ds.

at idle with 13.v it'll drop to 11.9 after maybe 5 seconds on full tilt. at 14v it'll drop to 11.9 in 7-10 seconds at full tilt. also depends on the music.

1. Normal size honda battery

2. It's a voltage meter that fits in the cigarette lighter (budget purchase)

http://www.mustangmonthly.com/techarticles/mump_0604_auto_battery_maintenance/photo_06.html

This battery ^ i think it came from kragen a couple years ago

 

[Roccaus 10+ year member]

i hav the same problem with voltage drop and i have 0guage kicker wire from the hood all the way back, my interior light dims when i only have my highs playing any tips. i hav a kinetik 2400 big battery under d hood but is only running the 1 battery

 

[jrwalte 10+ year member]

i hav the same problem with voltage drop and i have 0guage kicker wire from the hood all the way back, my interior light dims when i only have my highs playing any tips. i hav a kinetik 2400 big battery under d hood but is only running the 1 battery

Could be a weak ground issue. You shouldn't be dimming without your subs playing on a HC2400 even with the car off. What's the RMS of your mid/high amp? What does your car do when you have your subs playing as well?