I tried posting a topic, hoping for some suggestions from some folks who have listened to several different performance levels of subs or even have multiple subs, but the thread was derailed by some guy who really doesn't like Axiom subs for some reason. Anyways, maybe he can argue as much as he likes about it over on the other thread and we can discuss the original thread topic over here. It doesn't seem like it will end over there any time soon.
I have an original LFM-1 Outlaw sub and have been thinking that a few years down the line that I would like to upgrade to something with a little more extension and output. I wouldn't want to spend more than around $2000 total. So there are four options as I see it.
1. Go for an all out $2000 subwoofer that extends flat down to 15Hz and maybe lower and has plenty of headroom, for no matter how much the movie scene is calling for or how large the room is.
2. Go for two $1000 subs to help smooth out the bass in most of the seats.
3. Go for three $600 - $700 subs and try to integrate my LFM-1 for a total of four subs.
4. Try to integrate the LFM-1 with scenarios 1 or 2.
With (3) I could get the LFM-1EX and there is likely no doubt that the subs would work well together since they have the same driver (and I think enclosure) as the LFM1. They just went with a slightly more powerful amp and a different EQ. This would give the flattest response at every seat. At the other end of the spectrum, I could do (1), which would give the best bass in the money seat, but probably not any other ones.
Another question that comes from these different scenarios is how well will different subs work together in a room? Would a well designed $600 sub play well with one of a different brand?
Will a well designed $600 sub play well with a $1000 sub or even a $2000 sub?
This was a nice article which just scratched the surface on this topic.http://www.soundandvisionmag.com/article/subwoofers-4-2-or-1-0