I did. The warranty is only 2 years on the amp. I'm a little over that. I checked with Sybesmas Electronics, the company that handles the repair for Klipsch. They just give you a remanufactured amp with only a 90 day warranty. I asked if it was any better than the stock amp, and they said it was the same. Not sure I want to spend $120 to repair a sub that may do the same thing in such a short time.
Thinking about trying out Velodyne. Any opinions?