Sasha

iTrader: (10)

I wonder what SPL competitors do for grounding, when they run ten or more 00g cables for power.

I am not convinced, and it really sounds like a crock of ****, but I am too lazy to google it, and I'll give you the benefit of the doubt. I just do not see how running ground cables from your equipment in the trunk to the battery negative changes things, if the battery is still grounded to the car, and who cares about current carrying capacity between one end to the next, if the car is one unit, therefore, having a current carrying capacity of it's weakest link sort of speak. It sounds like BS, cause this theory seems to defy laws of physics.

Sasha

iTrader: (10)

Ok, you got my attention. I googled for it, but could not find any relevant info. If it is not too much trouble can you post a link for me. I just hope you didn't hear it from "some guy", because this theory totally doesn't make sense to me at this point. I wonder how they measured it to be an equivalent of 4ga wire, cause if that were true, then people would not be blowing their 300A fuses on their thick power cables, due to excessive power demand from their huge amps, as it would be impossible, cause then the car body would be "choking off the electrical flow", thus lowering the current, but current doesn't slow down or speed up like that, as it all moves as one entity, cause if it has one slow area, the entire current carrying capacity is effected and basicly slowed down to the slowest speed due to resistance of the weakest link, which happens to be "the center of the car's body" as argued by you in this debate. What do you think?

Sasha

iTrader: (10)

I would actually like to hear an opinion from an SPL competitor, as they should know more about current transfer, as it is the whole point of tranfsering more juice for higher db's. Yuli? Anyone? What do you think about running a ground cable from the equipment in the back to the battery negative under the hood?

JordyO

iTrader: (17)

Basically... all serious competitors have negative runs to the battery along with the positive.

I'm not sure about the frame being equivalent to 4ga... but it's definitely worth the trouble to run an equal number of negatives vs positive back to the battery.

You said "who cares about the current carrying capacity from one end to the next"...well that's exactly the issue. The frame/body doesn't carry enough current from the amp back to the battery. (these aren't solid pieces from front to back.. there are screws and welds to hold everything together...)

Sasha

iTrader: (10)

I see... 4ga thing still blows my mind. Good enough!

I never felt the necessity to run one of those cables with any set-up I have seen, but I never concern myself with SPL competition. As for original concern with dimming issues, everyone I know benefited majorly from the big 3 without running a ground cable back to the battery.

SQkid

as a side note... I'm an electrician... I know a thing or two about current handling myself, and I wouldn't have spent over $100 on a ground wire I don't need.

ryannow

yea, basically what he's trying to say is that the body of a car has a lot more resistance as opposed to a thick *** solid wire. the ground in a vehicle electrical system is used to replace the negative wires needed to complete any circuit. this cuts the amount of wiring needed in a car in half. but for high power applications, if you don't run a negative back to the battery, the weakest link in your wiring system then becomes the body of the car itself.

beverly

turn the volume down on the sub.. you don't need it that loud just a kick