Let's look at the facts. If you were to do a "proper alignment" with the full range box-exactly how would YOU do it.
The only way would be to have a go bit of time and a bunch of DSP presets that you would switch in as needed.
That could be done-with time, except when you started putting up several subs together and the full range box (which was just used for reference sub level was higher (level wise) than it should have been anyway) is a different physical distance from each box.
Since it was a SUB listening party, what level would you run the subs at? If you make them flat with the top-then that is no fun
. So if you are going to have the subs a bit higher than the top-exactly what would that number be?
The plot thickens that since you would be using a DSP with alignment, then the difference in sensitivity of the various cabinets would be lost. That can be both a good and bad thing.
It is good if they all have the same output level (or very close) which would allow you to hear the actual tonal differences between cabinets, rather than the added SPL of some cabinets clouding up what you are hearing.
It is bad because the sensitivity is completely gone and all cabinets would appear to have the same level with a given input.
It is easy to argue both ways.
And you also have to keep moving the top box around to sit on top of the particular subs-which gives various different listening positions. We were switching cabinets and if somebody had to keep running around with the top cabinet, it would again throw things off.
And if you were to use a DSP, do you start to correct for certain things in the particular cabinets response? Like a boost/cut here and there, but what the cabinet actually "sounds" like, get lost.
What are the limits of what would be done as far as "alignment".
I personally had no problems with the way the DSP was setup-Jim choose the parameters.
It was more of a "see what each cabinet sounds like by itself" NOT a "see what each cabinet souunds like when aligned to the top box" kind of thing, because everybody used different tops, so the various alignments would be different for each user.