Making progress! It's even starting to look like a cabinet :-)
Originally Posted by tjcinnamon
How is this different than selecting LFE + Main on the AVR?
Well, sadly my receiver doesn't have the LFE+Main option. It's a Pioneer VSX-94TX, a few years old. No matter what I do, whenever I set my mains to Large there is no sound from the subwoofer (except in a select few listening modes like Extended Stereo). I have to set all speakers to Small for the SW Pre-Out to have a signal in most of the audio modes (DTS, Pro Logic, THX, ...). It seems like it is designed like this, just happens to be a model where they didn't offer the LFE+Main setting.
Originally Posted by Fabricator
after i posted, i realized you were using plywood and edited.
those nuts screw up MDF
Yes, I did a couple of tests and did end up stripping a screw in the 3/4" plywood pretty easily. That's why I'm planning on adding the pine and using longer screws to make sure things are tight. In my MDF test box, I drilled the holes, then lightly screwed in the screws, barely bottoming them out, then removed the screws, filled the holes with PL adhesive, screwed the screws back in and let the PL dry. This seemed to have done a pretty good job making a solid bite for the screws.