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Discussion Starter #1
I'm working on 2 sealed UM18s that I want to power off of a Crown XLS5000, 1600x2 at 4 ohms. I was planning on internally wiring with 14AWG, mostly because its flexible, but should I be using a thicker gauge? Parts express is telling me 10AWG. Its only about 30" so I figured 14AWG would be sufficient. What do you guys think? I want to do it right the first time so if 14AWG isn't optimal I'll go bigger.
 

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It certainly would not hurt going thicker, if you look inside most sub designers they usually don't use heavy awg wire but it won't hurt.
 

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Discussion Starter #3
I was going by this article from audioholics:http://www.audioholics.com/audio-video-cables/speaker-cable-gauge

According to that article at 4 ohms 14AWG should be good up to 20ft, so i figured it wouldn't be an issue at 2'. But then they go on to recommend 10AWG...

If it really could make an audible difference and I go with 14awg Im always going to wonder if it would be better with 10AWG.
 

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Discussion Starter #5 (Edited)
I promise, 14 vs. 10-ga. wire won’t make any difference for a 12 inch length. As Tony said, typically subwoofer manufactures don’t even use something as substantial as 14 ga. I mean, check this interior shot of SVS’s SB-12 sub. That’s probably 16-ga. wire at best.




Regards,
Wayne

Thats what I was thinking. I just found this cool site that calculates db loss.
http://www.bcae1.com/images/swfs/speakerwireselectorassistant.swf

According to that calculator, in this particular situation, even at 3 feet of 14AWG internal wiring, it would results in a voltage drop of .3 volts or .03db. 25ft of 11AWG on the other hand, which is a realistic figure for running from amp to subs, results in a 1.26 voltage drop and .14DB loss. So the 3 feet seems pretty insignificant.

I realized I overlooked something potentially more serious while while I was looking into this though, I was planning on using a SpeakON connector on the subwoofer like the one in the attached picture. It accepts 3/16th female disconnects, but I found out the Molex ones parts express sells are only rated for 10 amps. If I use 4 conductor cable from the amp to the sub and use all four poles on the male Speakon connector and 4 of those Molex disconnects, and then bridge both +'s to the + on the driver and both -s's to the - on the driver will each pole/disconnect only see half the total amperes that they would if I ran the same 1600 watts into two pins and two connectors? Is this still going to be inferior to soldering the wire directly to the pins? I don't solder but Im sure I could get someone to do it if its significantly better.

This is my first true DIY, so I appreciate the help.

Nick
 

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internal wire gauge doesn't need to be bigger than the wire gauge coming from the amp to the speakon connector on the sub. If you want to solder it's really easy. Get solder iron and a small roll of electrical solder for $10.99. RadioShack® 5-Piece Basic Soldering Set Catalog #: 640280
 

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Discussion Starter #8
internal wire gauge doesn't need to be bigger than the wire gauge coming from the amp to the speakon connector on the sub. If you want to solder it's really easy. Get solder iron and a small roll of electrical solder for $10.99. RadioShack® 5-Piece Basic Soldering Set Catalog #: 640280
I'm talking about the reverse, how much smaller can you go internal, considering how short it is. I will probably use 11 gauge from amp to sub and I was going to use 14awg internal for about 24".
 

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It eliminates the chance of it coming loose. So it can.
 

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Discussion Starter #12
How about assuming there both properly connected? Im thinking maybe I should use all 4 pins on the SpeakOn whether I use the disconnects or solder the wire to the pins, that will give me the lowest resistance connection compared to using two of the pins right? Then I can just bridge the two positives and two negitives to get pack to two wires to connect to the driver.
 

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It's your choice, a bit overkill but won't hurt
 
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