It was before 3.6, TBH, I think it's a "feature" that has been there a long time. but I have only just gotten around to properly resolving. I am running 3.6 and I've performed a factory reset this time and every time I've updated firmware as directed in the installation instructions.
FWIW, I'm a bassist, so I use split paths a lot.
Yes I read the link posted above. I understand the principles, but as I mentioned above, I'm seeing a different result to what's expected.
Pan law would dictate a 3db increase for Y and A/B splits with the balance centered, whereas I'm seeing a 3db decrease.
This also dictates a 3db decrease for crossover split whereas I'm seeing a 6db decrease