Oklahoma Wolf

Don't worry too much about the EP2500... it should be fine with that. I'm no fan of Behringer, but the QSC RMX-2450 it's a copy of is a good design. I'm using an RMX-1850HD myself bought used from a pro audio acquaintance of mine from Saskatoon. I can't heat that thing up at all with just one of these subs. 16Hz is still plenty low. To be honest, I can't even enjoy content much below 16Hz myself due to the room I have mine in. I can't hear it, and all it does is shake the rest of the house.

Definitely port it. You may not need 900W. Mine's getting 600W in a 16 cube box tuned to 11Hz... it does very well like that. I'm afraid it'll bottom out if I give it more. Rattles everything in the house... I love it. Only problem is, I want to build another one and my wallet won't let me.

Looks heavy - are the headlights pointed at the sky yet? Should be very impressive once it all goes together.

Yeah - I have a pro audio background, and just about the first thing I learned was that headroom is a good thing. Especially when you have stacks of cabinets to take care of and you want them all to stay working. You don't want to start clipping the amps on a dozen pro speakers you likely don't even own. My current car sub is a 300W RMS unit being run by a 400W amp... they've been a good match for each other. I'm buying a QSC RMX-1850HD for my IXL 18 build - that's just a little excessive, but as long as I'm watching the gains it will be fine. An acquaintance of mine came up to me going on and on about how he was the man when it came to car audio and kept bragging about how he had this thousand watt Xplod amp driving two subwoofers in his car and how it was the most awesome thing he's ever heard. He kept pestering me to show him the setup in my car, thinking I couldn't possibly get as loud as his setup with what he thought was only half the power. So I did. He's not bragging anymore. The right blend of components can do wonders. And what's in my car isn't anything worth bragging about either - just a cheap Visonik amp and sub. But I was careful about matching the sub and the amp to the car and each other to the point of reverse engineering the amp, and it does get decently loud in there. Now, if it would only sound good, then I wouldn't have to replace it

This question's been poking at my brain too.

Man... I finally get my hands on my first IXL and now I see this. I haven't even done anything with that 18 yet... it's sitting on a shelf waiting for me to get a box together. Ok wallet, start stuffing yourself again... I get the feeling I'm going to want whatever that big coil's attached to. Be glad I'm not in Winnipeg - I'd probably camp out outside the shop until you released the final product