I got my Minidsp and started to play with it today. There's definitely a learning curve on how to use it with REW but thanks to all those tutorials found here on AVS and on the Minidsp website, it's easier than i thought
Like i wrote in the thread above, my subs started to roll off at about 23hz after EQ'ing them with ARC. But things changed drastically as soon as i added the Mini ... way more than expected !
Here's what i was able to acheive with my sealed UXL-18 and the SB-13 in a 3800ft3 room with hardwood and ceramic tiles flooring, 8ft ceiling, opened to 3 more rooms. Note that i forgot to disable the sub crossover in the receiver, that's why the FR is rolling off at 100hz ...
Just for the sake of it, i started EQ'ing with the SB13 only, just to see how much LFE i could get out of it. The result was not bad down to 20hz but not satisfying at all below 20hz. Then i added the UXL and started the EQ'ing process again with both subs. With the addition of the UXL, i must say it's a night and day difference, specially below 20hz. This thing has a ton of power, it's almost scary
Keep in mind that this is my first experience in home theater, that may explain why i'm so impressed !
Right now, the FR is almost flat all the way down to 14hz. I think i can do better, just need more time to play with the Mini and REW. In the meantime, i'm open to any advice, i still have a lot to learn ... but damn i love it !