So sub or not to sub

I run B&W 804S full-range and two Rythmik 12" subs from line level signal. I used to have a REL Storm III. The 804 + REL sounded better than 804 alone. The setup with the two Rythmiks sounds a lot better than with the REL.

The key is setup: multiple bass sources provide a smoother bass response. Google Dr. Earl Geddes and his theory and multiple setup approach. Very useful!
The Rythmiks provide a level of tuning the REL just does not provide.
Another key is using measurement software (I use REW) and a measurement mic to test multiple room responses from different sub locations, crossover frequencies, gain, phase, etc. Each sub has it's own tuning, so not a trivial task if you plan on evaluating by listening only.

All in all, in my book subs are a must have. Still wondering about hi-passing the speakers so to avoid having them and the speaker amp reproduce the lowest end they really aren't suited for handling (I use tube amp). On the other hand, two additional bass sources smooth out the response further. I guess we get to pick our poison.

Cheers!

James633, what kind of high-pass crossover do you use, and how is your system set up for this? I have been pondering this route for a while.

Wolf, there's nothing more practical than a good theory. I went over it briefly, tried it out, measured, listened, and confirmed it worked for me. If complex theories make someone frieghtened, it's ok to stay away and pretend they aren't going to work anyway.