picked up the hardware for the new sub...
I like the look of 12 point fasteners and you don't usually see them, especially in stereo installs, so I thought it would be cool to use them here. The only problem was the smallest I could find was 1/4-20 so I had to open up the mounting holes on the sub a bit.
Nothing fancy here...just used the sub as a template to mark the holes then clamped it down to the drill press.
I used t-nuts without spikes, because they've never worked well with MDF. These have small flutes on the shaft that grip the inside of the hole and I added a dab of glue to keep them in place.
..here's a close-up of the fastener...
I hope to get the back wall of the enclosure done sometime next week.