View Full Version : running speaker wire out of a wall

06-13-2009, 11:10 PM
I have recently been told to use brass bolts...

Well, i measured the resistance on brass bolts and it came up as high as 0.18 ohms as that would definitely effect power received to subs.

I am running 4 DC Lvl4 15s and 2 AQ3500ds.

My idea is to use, for example, 2 1" ID PVC pipes. I use only 8 awg wire. I'd run one set of wire out 1 pipe and the other set of wire out the other pipe. Glue rubber grommets on both ends of each pvc pipe then shoot expanding foam all inside of each pipe and let cure. This should be enough to seal off any air leaks through the pipe and the grommets will help as well. This also has no resistance since it wil be straight ran wire from the subs terminals directly to the amps.

This method sounds doable correct? Because other people keep telling me to use brass bolts when i just found out how much resistance they actually have.

Yes, this is a comp build with partial daily.

06-13-2009, 11:12 PM
Did you take into account the resistance of the probes?

06-13-2009, 11:15 PM
yes i did. Probes were reading 0.25-0.28. Brass bolts were reading 0.4-0.46

06-13-2009, 11:36 PM
might help?

06-13-2009, 11:43 PM
use the brass boltts man it will work and always works..many comp guys use that method..

06-14-2009, 07:21 AM
use the brass boltts man it will work and always works..many comp guys use that method..

X2 that's what i do

06-14-2009, 10:10 AM
can also try stainless steel as that's what I normally use...

06-14-2009, 07:53 PM
i just got a tap n dye set.

I'm gonna make my own copper all-thread rods.

Stainless steel is next to the least conductive metal.

Again, this is for comp use, not daily, so i gotta be an *** about resistance here.

I'm gonna be stoppin by a couple shops tomorrow to see if they can have or can order me some pure silver bolts, washers, nuts. Lucky try but i got nothing to lose.

06-14-2009, 08:11 PM
drill a hole and run the wire straight through the wall then seal it up with resin?

less connections = better

06-14-2009, 08:35 PM
well, that's somewhat what i was wanting to do, just straight wire... but everyone else seems using bolts or threaded rod is better so threaded copper rod it is.