Ckoffend - the subs took some serious time to set up and integrate. The Hawks I found to be not very fussy to set up. I actually have them fairly close to my back walls (2 feet)and about 8 feet apart, ever so slightly toed-in. I have tried them in many positions and they sound pretty much the same. Definitely add lead shot or kitty litter or sand or whatever to the base - it tightens the bass - but do it iteratively - it's easy to put more in but harder to take out if you put in too much!
For the subs I found it important to find out exactly what my speakers were doing on their own first - ie. where did the bass actually begin to roll-off in my room? Then I set the subs crossover just above that point. Getting the volume right was tougher. Also found that even slight changes in placement of the subs made a big difference. I'm not flat but I'm close on most bass frequencies with the exception of one "hump" at 50-60Hz which is a room issue.
For the subs I found it important to find out exactly what my speakers were doing on their own first - ie. where did the bass actually begin to roll-off in my room? Then I set the subs crossover just above that point. Getting the volume right was tougher. Also found that even slight changes in placement of the subs made a big difference. I'm not flat but I'm close on most bass frequencies with the exception of one "hump" at 50-60Hz which is a room issue.