Lets get technical.

[bass-aholic 10+ year member]

Ok i want to know the answer to this, i don't care for peoples opinions who don't know about this subject. I want people who know what there talking about to reply.

Why have 2 runs of + and 2 runs of - of some 1/0 or even 4/0 and have really low resistance(which is great) for an amp like lets say 7kd, t15k, etc etc (and don't think im picking on these amps/brands there just two off the top of my head) which have 1 1/0 input for + and -. How is enough current going to get in through there? 15,000 watts on 0g? Even if the amps main wires are only 1-2 feet long thats a lot of current draw. On a 12 volt system thats 1250 amps of current threw wire rated at 350 amps. //content.invisioncic.com/y282845/emoticons/confused.gif.e820e0216602db4765798ac39d28caa9.gif

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[WALKS UP]

I run telephone wire cables (the ones outside on the poles) for my T15k //content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif

 

[groundpound4200 5,000+ posts]

most big amps have dual 1/0 power and ground

 

[bass-aholic 10+ year member]

hmmm not the t15k or the 7kd //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[groundpound4200 5,000+ posts]

my IA 40.1 does, the T15k has a totally different power supply than anything else, and IDK about Stetsom. Their amps seem to have a lot of little quirks to them

 

[pawn man 10+ year member]

the rockford 15kd is a hybrid amp. it uses very large caps between the power supply & the output section. it only has app. 485 amps of current draw.

 

[Ed Lester 10+ year member]

my Maxximus has a qty of 4 0 awg inputs.

Most 4 and 5K amps and above have multiple inputs as does the new Stetsoms.

Also, the lower the resistance on the wire, the more current you will have available at the power input of the amp, from that point it is only inches to the circuit board so any loss there will be very minimal.

Multiple runs of 0 awg is popular amongst street class dB Draggers and some can see in increase of .5 - .75 dB when going from dual runs of cable to 7-9 runs of cable. Some have even reported a full dB gain in doing this.

 

[Atimm693 10+ year member]

350 amps over the general length of a vehicle.

Why do you think fuses can be so small and have so much current going through them? A 3ft long run of 1/0 will carry some current, I don't know how much exactly, but a lot.

 

[helotaxi 5,000+ posts]

Voltage drop is proportional to current and resistance. Get the resistance low enough and you can flow a ton of current without an appreciable drop in voltage. 1-2 ft of 1/0 cable has almost negligible resistance, so it really isn't a limiting factor. The current handling capacity of wire is directly proportional to its diameter and inverseley porportional to its length. Get the piece of wire short enough and you can run a ton of current through it without any ill effects regardless of its diameter. The input blocks on the amp are solid and short. Of course fro there the current goes to the real limiting factor: the traces on the PC board of the amp.

 

[Ed Lester 10+ year member]

and to answer your question about the Rockford T15K.

It can be as much as 300% efficient.

When music is played there are many breaks and pauses. Most amps will draw very low current during these times. The T15K will still draw a fair amount of current because at these times it will charge the internal capacitor bank. It will store the extra power that it will need when the music kicks back in. All of this happens in very fast times, miliseconds.

And Yes, the shorter the wire, the more current can pass within a certain gauge, but most of the time people run from the battery up front, to the amps in the back. This is usually 10ft or more.

 

[BassAddictJ 5,000+ posts]

you can carefully get 4 1/0 runs to come together right before the amp and fit into that single 1/0 terminal without an adapter/bus bar. do 10 runs of 1/0 between the back battery to the amp 1ft away. then do 2 or 4 runs from the front charging system to the bats in the back. keep the bats nice and charged before comps, and the 2 or 4 runs of 1/0 will work nicely for daily....

i use a series of midgets holding hands for my power/grounds. //content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif