Thanks for all the compliments on this project. Your experiences, as detailed here have helped immensely
Steve, I've been reading about all the recent dual RLp-15 projects in the pipe and if I was planning to build a new sub today, that would probably be at the top of my list. If I sell this one, that'll probably be my next sub project. Thank you for doing a great job of evaluating the "sub-options" for the DIY community, and for folks like me your expertise and recommendations are invaluable.
But I bought the Quatro over a year ago, and the amp last December, so I was committed to doing this project. Sure, the DVC 15 / Bash 300 combo would probably have been a better choice, but I did learn a lot building this one.
For instance: raw heavy flaked oak veneer doesn't glue down well with the "iron-on" yellow glue method nor with solvent-based contact cement!
The "flakes" tend to be thinner or "cupped" and as a result can have voids beneath them. Next time I'll try using either a vacuum bag (with veneer glue), or a veneer press (with polyurethane glue laid-on with a very-finely-notched trowel/spreader).
I had to use a syringe to inject PVA glue into the "flake-voids" then press them overnight - that took about 2 weeks. In the end, the "highly textured flakiness" of the oak helped to disguise any "glue-injection slits" I had to make in the veneer.
Close-up of finish shown in photo below.
Oh yes, it weighs in at 118#.