As far as the eq'ing all subs as one... I do not know the technical aspects of it, but I do know it works regardless of the location of the subs. I also know that any time I have tried (and I have tried many times) to equalize two subs independently, that while the individual responses have looked very good, once they are combined, the overall response looks awful. It has never... and I emphatically repeat "NEVER!" worked when I have tried to equalize subs independently for an overall smooth combined response. Quite frankly, I do not recall anyone ever succeeding at doing so... and it does not make sense that it can be done either.
Regards,I used to own the SMS-1 and I can tell you that it's not as simple as just flattening the response with filters. They don't tell you that in the manual though.
Creating a flat response is not good enough. One can create 10 flat curves and still have completely different sounding results every time. With my SMS-1, a flat graph equated to boomy, sloppy sounding bass and I never understood at the time why that was the case. Surely I should be getting nice tight, responsive bass, right ? Well, no, not really, although the level of bass had been reduced, the filters that were applied did not target the mode center frequencies with enough precision and the display of the SMS-1 was not accurate enough, in my opinion, to deal with those issues.
Like the other poster mentioned, it's essential that you use REW to input filters and see the results as the SMS-1 display is not reliable, in my opinion. So for now, it looks like the Anti-mode is the best (and most affordable and easiest to use ) automatic EQ on the planet.
No, You have three outputs but they will all send out the same signal. What I do is only eq one at a time and then intergrate the second, third and make adjustments as I go. I have been able to get a pretty flat response so it works well for me.Tcarcio, there's no way to eq each sub individually with the sms-1.