I heard good things about rythmic.
If you're looking to possibly build a sub, I'd recommend looking into one of the Rythmik Audio kits. I recently built a 12" sealed box and it was one of the best things I've ever done in regards to my home theater. It was totally easy to do. I have only rudimentary tools. If I can do it, anyone can.
I was looking at their 15" kit. Also I looked at sound splinter... the price point is just stupid cheep for the performance I think. TC sounds are a bit 'leet and are better build but the dollar starts to stretch less there. When you could do 3 18"s from one pretty good brand and not over power them you can get more volume of air moved than you could from one high end 18".
Then enter the INSANE level of woofer.
I am planning something over the top.... I'm waiting on a line I have about some absolutely insane subwoofers(maybe only a 12 however) built for extreme low, SQ and power handeling. I would love to do an 18" but I don't think I can find a good price on it....
I also gave Bag End and genelec some serious thought, but at their prices for everything I figure I can build something on my own and literaly know I did that. I may even do some insane Horn style, but usualy those are not too musical and built for raw SPL... I don't need the sub any louder.... my velodyne dps can rumble the house actualy when it's in a good spot in the room.
If I do my own DIY sub set up it will be costly and complicated though.. merely so I can say "I made that, here are your earmuffs, buckle in please and sign this waiver before we turn the movie on."
I'm really just cruising around now waiting for more reasonable dollars to upgrade the surround amp....
I should note that the dynamic shift to thinking more amp and less sub upgrade is the GAF meter is in the red and sniffing about looking to become FAF.... I would much rather get a new super-d-duper sub and start work now but it's out of the option with her having relationship upgradeitis!
... I think I may get a promise pendant, that will let her know I will be planning on a promise ring, to make sure she is clear I am commited to then getting an engagement ring at a TBD date.... We will see how long I can draw that one out...
