Sorry to hear about everyone's sub problems.
I also have an athena system, F2.2 in front, and B series bookshelfs in rear, with WS-60 center. I have them connected to a pioneer elite reciever. I am happy with the speakers so far, had them about a year. The athenas sound much better than my yamaha HTIB I had previously.
I was going to purchase p6000 recently to compliment the sytem, as I was happy with other athen speakes, and had heard good things about the sound of the p6000. But they do not sell them anymore, only the p4100. I have read of many people like yourselves having problems with their subs, and have seen tons of refurb athena subs for sale. It is usually the amp people are having problems with.
I am happy with with my athena speakers, but with problematic subs, buying out by another company, discontinuation of most of line up, and what sounds like a lack of customer support by many, i decided it might be best to hold up on buying any athena products for while.
So I opted to get the A2-300 from eD. It is around the same price, I paid $350, but they have a 10" model starts at $300. Much better quality build and sound than other subs at same price level. I use it for 90% home theatre and gaming. I am very happy with it so far.http://www.edesignaudio.com/edv2/pro...roducts_id=407
Just a thought, in case you end up replacing your sub.
The build quality of their products is very good, as well as sound. You get a quality product for what you would pay for a better known brand name at same price. They also have excellent customer service(have answered all my emails promptly) as they are still a small company. I have also read people in this forum that had a problem with an eD sub, and eD was happy to correct the problem very quickly.
The only down side, is the speakers are built to order, so it takes a couple weeks to recieve them. They do however keep you updated as to what part of production your speakers are in at any given moment.
Hopefully athena/klipsch/? will step up and fix the subs, so none of you will have to buy a new one. Best of luck.