"...Maggies are down about 3dB at about 30Hz..."
So why xover @30 hz. That gives you suck out in that region.
if you plot a curve most speakers neither drop of a cliff nor jump on the cliff.
At some point they began to roll off. Especially if you are talking about a xover. So they will start to roll off at say 60hz. There would be a decreasing slope all the way to 30 hz. The subs xover in my opinion should kick in @ 60hz and slowly rise to where it takes over completely. A brick wall approach either means the sub kicks in to early or too late. From the response curves I've seen, this is a better approach.
When I used The CLS they were 3db down at about 40hz. Sometime it is difficult to tell because manufacturers don't tell the truth. With exception of Stereophile, reviewers don't measure. Too make matters worse measurements are done in anechoic chamber which can't measure the response in your room. Thus the nonadjustable xover point of the Janis was 100 hz. Most of the xocer slopes are in the 6db/octave,12db/octave or 18db/octave. 6 being considered very gentle with 18 being very steep. It depends on the design philosophy of you speaker.
if you check the Stereophile review of your speaker there is probably an example of the xover and how it rolls off. I admire those who can adjust speakers by ear. I bet that using a spectrum analyzer in yuor room reveal they are not exactly right.
Gregadd
So why xover @30 hz. That gives you suck out in that region.
if you plot a curve most speakers neither drop of a cliff nor jump on the cliff.
At some point they began to roll off. Especially if you are talking about a xover. So they will start to roll off at say 60hz. There would be a decreasing slope all the way to 30 hz. The subs xover in my opinion should kick in @ 60hz and slowly rise to where it takes over completely. A brick wall approach either means the sub kicks in to early or too late. From the response curves I've seen, this is a better approach.
When I used The CLS they were 3db down at about 40hz. Sometime it is difficult to tell because manufacturers don't tell the truth. With exception of Stereophile, reviewers don't measure. Too make matters worse measurements are done in anechoic chamber which can't measure the response in your room. Thus the nonadjustable xover point of the Janis was 100 hz. Most of the xocer slopes are in the 6db/octave,12db/octave or 18db/octave. 6 being considered very gentle with 18 being very steep. It depends on the design philosophy of you speaker.
if you check the Stereophile review of your speaker there is probably an example of the xover and how it rolls off. I admire those who can adjust speakers by ear. I bet that using a spectrum analyzer in yuor room reveal they are not exactly right.
Gregadd