Recommend a long subwoofer rca?

A long run won't help things. I use MIT T2 for the sub, but mine is an augmented setup, so the sub isn't between preamp and amp.

I used to have the monster sub cable. Don't waste your time and money. They are mid-fi. There is much better out there.

This isn't an answer to your question, but rather is an inquiry of my own. Supposedly, balanced cables are better when running long distances r/t noise. Why aren't subs built with XLR connector's on them? Also, are there any XLR-to-RCA adaptors out there that are any good? Do they defeat the purpose of running a balanced cable? Any feedback would be greatly appreciated.

My Sunfire Pro sub has balanced XLR input connectors, but they are not vital to it's performance. I kind of have good company in recommending this sub, Harry Pearson for starters. We all know it's not the very best sub out there, but for it's size and price, it's guranteed to be the most dynamic and extended. Use it properly in a large and ASC treated concrete room, and transient speed goes from marginal, to satisfyingly sharp and esl-like. Sure a Velodyne HGS-15 would be better in every way, but not 300% better (costs 300% more). I'll still buy one when I can afford it, though...just like everything else in this pandora's house of ill repute. Perhaps there should be a 12 step program for audiophiles...