System Install Question

[pbnj22 10+ year member]

itd be like wearing 2 condoms.... pointless //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[TheUnderFighter 10+ year member]

Shoulda gone with the Rubi, or saved just a bit longer for the crescendo bro. I think both would be more efficient too. Again, that's an assumption being that they're better amps, I'd assume they're more efficient.

 

[bgowdy 5,000+ posts]

i didnt order it yet i was gonna go with the BB but. I think i will go with the Rubi. And i just got me a new 250a anl today so thats taken care of

 

[audiobaun 5,000+ posts]

Not recommended to run 2 anl in line,its like hooking up 2 gfi together....Not going to work!!!! Run one power line to a dist. block with bulb/ glass rated fuses, and from there to the amps of what regulated fuse rating for that amp

 

[bgowdy 5,000+ posts]

this is also a noob question lol. not mine tho. My friend asked me whats the differences from running 2 4ga power wires from batt through 150a anl fuse block

and then to the amp from just running one run of 2 gauge? i couldnt really answer the question for him needless to say. i have seen ppl at comps running multi 0 ga wires from batt to amp. so i thought i would ask?

 

[audioholic 5,000+ posts]

this is also a noob question lol. not mine tho. My friend asked me whats the differences from running 2 4ga power wires from batt through 150a anl fuse blockand then to the amp from just running one run of 2 gauge? i couldnt really answer the question for him needless to say. i have seen ppl at comps running multi 0 ga wires from batt to amp. so i thought i would ask?

Copper is copper. Two runs of 4ga has more capacity than a single run of 2ga. But usually people just have two runs of wire because they started off with one, and simply added a second when they upgraded their power drain.

As akheathen suggested above, the fuse on the power wire is there to protect the wire, and should be sized according to the wire capacity. The fuse should be more than your maximum current draw from your amplifier(s), but less than the capacity of the wire. The wire, obviously, should be sized so its capacity exceeds the maximum current draw of the stereo.

Im no SPL competitor, but I assume they prefer running mutiple runs of 0ga because that's the largest sized wire that you can get 'car audio' connectors for. 0/2 and bigger wire usually requires industrial-grade connectors and hardware.

 

[akheathen Premium Member]

also, have you ever attempted running anything that thick? it does not like to form to the vehicle well, wheras, 2 runs of smaller wire that can carry the same load is more easily installed. however, specific to your question, 2 runs of 4awg wire will actually handle more current than one run of 2awg. iirc, off the top of my head, 1awg, or 1/0 would be the same as the 2 runs of 4awg, just harder to install, in some cases..... either way, neither is going to be large enough for your amp, really....

 

[bgowdy 5,000+ posts]

ok i see. i was just wondering. how that would work. if it would carry current like a bigger wire. i have a stinger alum power wire 4 g right now. the box said it would take 2k watts current i dont know how true but it took my saz 2000d and never melted the wire and the amp was doing about 2300 rms @ 1 ohm. so i was doin pretty good IMO. And i have another run of the same wire just laying around. so thats like a total of 4k current. theres no way thats not enough for that amp.

 

[akheathen Premium Member]

idk where the "2k" came from, but the most i usually put through 4awg is 80-90a, but you could go 100-105 if you wanted... i suppose you could use 2 runs to go as high as the 125a peak, which would be the best without buying more wire, but i would go 2 runs of 2awg, or 3 runs of 4awg. actually, my buddy has that right now to his 2 jl1200/1's @ total 240a, which works fine. what happens usually when you exceed the ampacity is that the wire begins to blacken and force the power to travel through the core of each strand. this causes resistance to rise in the cable, and power to drop off by the time it reaches the amp. basically, it turns into a big resistor. of course, you can only run sustained current at levels that the alternator and alternator/engine cables can put out, and anything more than that is just draining the battery. another thing to think about. btw- we wired the 2 jl 13w6's up so that he is only pushing 600per daily, since are tahoes only holster a 165a stock alternator.

 

[akheathen Premium Member]

ok i see. i was just wondering. how that would work. if it would carry current like a bigger wire. i have a stinger alum power wire 4 g right now. the box said it would take 2k watts current i dont know how true but it took my saz 2000d and never melted the wire and the amp was doing about 2300 rms @ 1 ohm. so i was doin pretty good IMO. And i have another run of the same wire just laying around. so thats like a total of 4k current. theres no way thats not enough for that amp.

oh, and just because that's what it says it puts out, doesn't mean that is what you are seeing. it will only put out based on what you feed it. there is no such thing as free watts. basic pysics/ high school science. "energy is only converted"