This is exactly what I am looking for, to add the SUB-1000 to my Swan D1080-IVs. What cables do I need to get and how do I connect them?

Seeing as how the mentioned sub-woofer is now discontinued, what other sub-woofer which has RCA outputs can I use?

How did you get them repaired, if you don't mind me asking? The reason I ask is that my Koss KSC 75 currently has one channel without sound, and I would like to re-solder them myself to fix them. However, I have no previous experience with soldering, and would prefer them to get fixed by a...