Lake linear phase crossover

[Helge A. Bentsen]

Is there any practical difference using a Linear phase 48dB/oct filter versus a Linear phase brick wall that ends up at 49dB/oct?
I can get a steeper brick wall filter but then I have to double the alignment delay.

 

[Helge A. Bentsen]

For those interested, I think I found the answer.

http://www.felusch.com/ton/Lake/004_Tech_Papers/Lake_Technology_-_Linear_Phase_Crossovers.pdf