Pulsing Power wire.. Holy Cow!

bigblank69
10+ year member

CarAudio.com Elite
Well chalk this one up to something I had never seen before. I took my Orion XTR1500.1D out of my truck to give it a run on my AMM-1 and my bench power supply. I didn't do a full throttle test as I knew my power supply wouldn't be able to handle it (At least not until tomorrow when my second power supply shows up and I can run them in parallel), so I'd say I was at about 88-90% of the amps capability and that's when I got kind of a "surprise".

When doing the dynamic test at this level with every bass note the power wire pulsed like water going thru a hose. The wire didn't get warm, but it really shocked me as I had never experienced a wire moving on its own before. So I will be upgrading the wiring on my test bench now, I currently have 2 gauge running about 5 feet to a distribution block and a 5 foot run of 4 gauge. I thought 4 gauge for a short run on 150amp max capacity would be fine... but time to go bigger.

BTW, incase anyone is wondering.. The Orion XTR1500.1D did 784Wrms certified (rated at 600Wrms) at 4ohm and 1787 Wrms @ 1ohm at about 88% max volume on dynamic bass hits (Not at clipping). I'm predicting it will do close to 2K certified.

 


Here is a video I just took, I turned it down a little bit, so it's not as prominent as before, but you can see the wire moving.

And yes, my test area is a mess right now.. lol

 
KMSL. this **** is hilarious. let it go man..
Before i give the reason why it jumps or "pulses", care to elaborate on "why" it pulses?

Just asking since you are a self proclaimed electrician!! I am no way even near an electrician lol so i would like to hear what you have to say.

 
Before i give the reason why it jumps or "pulses", care to elaborate on "why" it pulses?
Just asking since you are a self proclaimed electrician!! I am no way even near an electrician lol so i would like to hear what you have to say.
go and look at your powerlines above your head. do they pulse?

 
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bigblank69

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