One last post on the #calfstudiogear story:
the X-Overs are pretty much the only ones I still use quite frequently to mess around with provisional active speaker setups (#CalfJackHost, multichannel Interface into multichannel power amp).
So I wanted to check the notching out of frequencies due to phase issues as mentioned in the #Ardour forum.
All I found is that they behave pretty much as I would expect them to. Linkwitz-Riley 4th order, 4-band X-Over at 100Hz, 1000Hz & 5000Hz. Screenshot:

#Ardour IRC channel: we don't like the #CalfStudioGear plugins because they cause Ardour to crash.

me: *tries #LinuxStudioPlugins instead*

LSP: *crashes Ardour*

@music

The #calfstudiogear plugs are great; been using them a lot 😎 👍 Here's an excerpt of a song that was mixed / mastered quite a while ago on Ardour / Calf exclusively:

https://k-zound.com/files/samples/Loop_Paradis.mp3

Song: Paradis
EP: Horizons
Artist: Patrice Privat
© 2014