Dual Sonotubes, Different Volumes & Tunes?

[bnw]

Anyone ever tried this? Kind of seems like an ultimate solution, but I'm sure I'm missing something.

[JCD]

I'm thinking this would be a bad idea.
You'll be reinforcing some frequencies and not others.

I'd stick to the same size and tuning.

JCD

[SteveCallas]

Your low end capability will be restricted by the higher tuned sub assuming you want a flat in room FR. I see no benefit in it.