Will this cable work for my subwoofer?

[yonyz]

Hi,
 
My (diy) subwoofer amp has an RCA input called LFE. At the moment I use a very cheap and thin cable that goes to my receiver's subwoofer out. Sound is good, but if that cable is touched a bit, it makes crazy sounds, probably because I use an extender and the connection there isn't perfect, so I finally purchase a long enough cable (10ft), but now after it's shipped I noticed it says "Digital coaxial", while I thought it was RCA because it looks absolutely the same. Is it actually a different type of cable? Is it not meant for analog signals?
 
Here's the cable:
 
http://www.ebay.com/itm/152304327457?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT

 

[MindsMirror]

Should be fine. S/PDIF coax also uses an RCA connector, and if anything the specs for a S/PDIF cable should be higher than you need for LFE so it will work for that too.

 

[ProtegeManiac]

I used the 75ohm cable on every 2-conductor RCA connection in my set up before - from CDP to DAC to amp to subwoofer, made from a section off a spool of Belden cables that a local store was selling by the meter.