Thanks, this is VERY helpful2234rew,
I posted something that answered this question a while back so here is the info again:
> 1st order (6dB/oct.) = 6.5 - 7.5 Audiolense xover filter width
> 2nd order (12dB/oct) = 3.8 - 4.3
> 3rd order (18dB/oct) = 3
> 4th order (24dB/oct) = 2.6
The above are fairly accurate representations for 1-2 octaves out from the xover frequency but they represent curved lines where the traditional linear sloped xovers are straight lines so they diverge from each other at some point. Hope this is good enough and is mildly helpful ...