After more and more research i decided the box requirements were too large to use the driver's to their potential in my car. That and the mixed reviews about the craftsmanship and their horrid SQ got me looking around.

I'm sure the TFOne's would demolish my car but my budget would not allow me to buy two and still have a box made.

Decided on two 12" Mach 5 IXL which I will have a ported box built to specs.

Good choice... I'll be ordering mine near the end of the month.

Make sure to order the correct model (BR version)

Done and done, got my email from Mark, should be built by monday/tuesday

why will 2 15's kill the sq?

I'm with everyone else on this ... trying to seal those 2 15's and get SQ out of them? I don't know ...
I've heard this and that about subs but it's not until you truly hear for yourself the LAG you're getting out of fast music ... I had 1 15" L7 and I could hear it if I was listening to something really fast ... but oh man could it get low :D

The intention was not to seal in order to get teh SQ from them. It was a space consideration for the most part. I was not in a position to go for a huge ported box and wanted to determine their performance, if any in a smaller sealed box.

I have decided that the L5's would not be getting used to their potential and therefor opted for a couple Mach 5's

Yeah I can see that from the most recent posts, should be interesting.
Post pictures ;) We love to see everyone's setup!