Help me build speaker cables please!


Howdy!
I’m looking for input on some home brewed speaker cables. I’m currently using cables I made from braiding 8 lengths of CAT 5 plenum cable together. They’re terminated in silver plated BFA bananas and set up as a biwire configuration at the speaker end. I love their sound, but think I’m ready to try something made from higher grade metal. I’ve been doing a lot with silver in my system and have loved the change in sound almost every time I’ve gone from Cu to Ag. The only place I like Cu better is in the PCs for my amps. That said, I’m leaning heavily towards making a set of solid silver speaker cables, using .999 silver wire from Rio grande. I’ll insulated them with teflon spaghetti tubing and possibly terminate them with silver plated BFAs.

Where I’d love some input is here: do I do one run of 10awg, or biwire 12awg to the woofers, 14awg to the tweeters and mids? I’m using a dared tube preamp and monoblock Ghent audio class D amps (500w into 4 ohm) which drive floor standing RBH 1266 SE/R speakers. They are 4 ohm and have side firing 12" speakers. They like a lot of juice and sound their best when given what they want, hence my desire for large diameter cables.

Cost wise, it’s only $50 more expensive to biwire. I liked the change in sound when I first biwired, but I also went from blue jeans twisted pair 12 awg to my braided CAT 5, which has a combined 9 awg. So I’m not sure if it was the biwiring or all the other differences that improved the sound.

Also, any other ideas for superb sounding DIY SCs are welcome.

Danke!
128x128toddverrone
I'm not a serious DIYer, but I have a couple comments. I've read about several speaker cable manufacturers touting the benefits of multiple individually insulated strands of smaller gage wire.  If I recall correctly in the 22-24 gage range. This is essentially what you did with the CAT 5 wire.  Repeating that with higher quality wire would be the next step.  In the case of silver wire that could be expensive, but the benefit may be worth it. 
A lot goes into making a cable. You have to be careful especially if you are using silver. Before you spend money on parts, have a look at Clear Day Cables web site. They make solid core silver speaker cables for prices so low, its hard to believe. You can spend just as much, if not more for DIY, but its not likely that you'll be able to build a better cable.
That's what drew me to the idea of the cat 5 in the first place. The reports I keep reading of solid silver in a loose dielectric are universally positive, with many saying it's the best they've heard. But damn, silver wire isn't cheap. But none of the higher grade materials are. I guess that's why this is a step up... Better materials cost more.
@sfall - I checked it clear day when I started researching silver cables. They are a great price, but not quite as thick as I want. I think they were 14 gauge.. my DIY cost for 10awg cable is about the same as the cost of their finished cables, whatever gauge they are.

The silver I'm considering is the same type clear day uses: .999 dead soft. 

Thanks for the heads up. I heard great things about them, which is what lead me in this direction in the first place.
I've done the cat 5 with Teflon plenum, overall sound surprisingly nice... very high capacitance, you would need to be aware of that when using these... As far as silver solid core in Teflon,  I'm sure that you are aware that silver can get bright on you in some configurations. For me that's expensive if I ended up not liking them.  My cables that I like best are litz... similar to what you've done but true pure litz in cotton...It you can get some light gauge solid core litz,  it is a highly detailed full and dynamic cable.  Good luck,
Tim