Well I'm still looking and pondering my replacement. Here are a couple links tell me what you think?
http://www.eminence.com/speakers/speaker-detail/?model=LAB_15
Or
http://peavey.com/products/index.cfm/item/723/116625/15"LowRider%26reg%3BSubwoofer
These both seem to have better overall specs, let me know that ya think. Nothing is available from Klipsch now for this model. Thanks