I am running IXL 18's in the "easy button max's" with a EP4000 running in stereo mode and I run them up to 150Hz.
I haven't chimed in much as I have been playing around with room placement and I have finally found a sweet spot , so I can talk a little more about the results.
I use a SVS AS-EQ for sub EQ'ing and I run it all through my MRX500 using the Anthem processing.
I have run these subs for over a year with four 6 foot towers running four 8" woofers in each that I built myself. Along with a "spread out" design with four 8's as a center channel.
My subs can move your hair around at 8 feet of distance in a 14x22 room with 9 foot ceilings. I have them pointed at the ceiling now as it manipulates room gain and it works for me.
I can vouch that I have beat the crap out of these subs for over a year at levels "in the red" on the EP4000 with music like Eminem to movies like Iron Man 2 (the whip scene in Monaco is truely something you just have to experience) and the subs just hang in there and keep on impressing.
Before I did all this I seriously was thinking of upgrading due to a crappy set-up on my part and I apologize if I ever said anything to give anyone any doubts on these subs.
I was dead wrong and they give me chills on a daily basis.
Mark has given me great customer service and I can't wait to sink my teeth into these new Pi 18's as I add two more easy button max's into my system with these drivers.
I'll still run the EP4000 to power these as well and I have to say I am a bass nut. Maybe not like some, but I love bouncing dishes one floor up in the house as it is, to add these for a total of four 18's? Wow I can't wait.
All in all I have about 4000 "real" watts into everything and adding another 2 with another 2k in wattage should be about right for what I hope to achieve.
Specs are cool, but I want to hear and feel it.
I can't wait