Nicely done! I think I’m going to end up doing something like that. I can build a box easy enough – it’s making it pretty that’s the hard part – veneers and all that. Not that I actually want to look at the thing (like you!).
My plan is to get some kind of “low and long” furniture piece (like a dining room buffet), gut the interior, and set it over the sub. I’d open up the end where the speaker points. Voila, invisible sub!
Regards,
Wayne