DIY speaker cable made from cat 5 type cable

I heard back from General Cable very quickly. It has the following constuction for the Home Depot cable:

CONSTRUCTION:
Conductor 24 AWG solid bare annealed copper
Insulation 3 pairs FEP / 1 pair Polyolefin
Pairing Varying short pair lay
Color Code Bandmarked, 4 pair Color Code
RipCord Polyester, Applied under Jacket
Jacket PVC

As can be seen the 4th pair does not have FEP insulation. Won't this degrade performance or is this OK? I'm looking at making bi-wire cables using 4 of these cables per speaker, 2 for the woofer and 2 for the mid/tweeter of my VR4jrs.

I have also checked and the Belden 1585A from Radio Shack (their # 910-1603) is no longer avaliable and the replacement cat 5 cable doesn't use FEP insulation.

Jea48, do you have enough to make cables as described in my previous comments?
Thanks

I have some of the Plenum rated cat5e, Belden 4 pair you can have. Send me an email with your address and how many feet you want.
Jim

I finally got them made and my system up and running. They seem to have make the sound as if a slight veil has been lifted off of the sound.

For future reference:

http://www.mcmaster.com/

Part number: 7365K17

Category 5E Cable Standard, Gray Jacket

Quantity Per Ft.
1-99 Ft. $0.24
100 or more 0.19