As I mentioned in a post earlier, I've been meaning to pull a reset in my theater room. By reset, really all I meant was that I needed to spend some time really figuring out the best place to put my sub. My room is fairly small and fairly crowded. Because of that, there are only a few places for me to conveniently locate the sub. I'd shuffled my sub around in the three or four convenient spots, and found what seemed to be best. Each location had issues, but I finally ended up with a spot in the back of the room behind the main listening position. After applying EQ, this is what I ended up with:
It took 9 filters to get this curve, and obviously there's a huge suckout at 45Hz and 55Hz, which is such an important frequency range. Still, it was the best I could find, and overall, it resulted in a fairly pleasing sound. Plus, my 15 inch subs are heavy, and I didn't want to try getting it into any of the more difficult spots in the room just to see how things measured.
Today I decided to get serious about this. As I said, I only have a few convenient locations in my small room. However, it's a dedicated room, so I have the ability to move things around a little if necessary. I'd tried to sub-crawl perviously, but I could never really tell what sounded the best. Today I set my sub my main listening position, and decided to use the mic and sweep signals rather than my ear to find the best spot. All in all, I took 23 different measurements in the room, and, as is typical with these sorts of things, found that the best location was also one of the least convenient spots in my room.
After a bunch of cursing, shoving, lifting, and more cursing, followed by some light EQ, here's my current measured, in room response:
What's really great about this is that I was able to go from 9 filters down to 4, and I have a better response curve and a better waterfall.
The moral of this story? Take some time to actually measure what's going on. Take more measurements than seems reasonable. Keep banging away at it until the lightbulb goes off, and things come together. As Mark said in his post, it takes some time and requires some effort, but the end result is worth it. I always thought the bass response in my room was ugly. Turns out, it's only ugly if the sub's in the wrong place
Anyway...sorry for the long rambling post. I'm just really excited about these results.