One of the top 3 full ranges I've ever worked with: SB12MNRX2-25-04

Nice looking!

Small volume!
This is not the final volume, the back is a mirror of the front and I plan to bisect it on the bandsaw and make another piece for the back. This way they will match perfectly. It will be a small volume though, as it will be crossed around 300hz or so to an 8 inch...I think...at this point lol.

Appreciate that! I do like the way it looks.
This is spalted Maple and has insect tracks all through it, making it beautiful but a bit soft. When the enclosure is done I will submerge the entire thing in thin casting epoxy under pressure and let it be for 2 days. Then it will be extremely hard and take a nice finish. It will also be completely airtight and even falling off a counter won't bother it.
 
I will seal the driver openings of the enclosure so that the casting epoxy does not freely run in, then put it back on the lathe to finish and get a tight countersink for the driver. A few mm on the outside will be hardened, but there should still be a thickness on the inside that is not penetrated and remains soft. I could also add color, but I doubt I will with this piece.
 
Measurement

Bare in mind this test box is 13" deep with a foam cushion stuffed in it, about 5.5" wide by 9 inches tall, and the front and back tacked on with an air gun...not exactly sealed. I don't usually measure anything in these boxes, just make different baffles to burn in drivers playing in the shop while I'm working.

Mic is 20cm from the driver to get a decent measurement considering it's not in a great spot and it is not countersunk either.

Considering all this, the worst of it would be a 3rd harmonic peak at 4200hz. That peak however is around 43db down...0.6%. 2nd harmonic hits about 0.5% at the break up point. Pretty damn clean and smooth.

Glad I trusted my ear and bought more, with a proper design these will shine. They sound laughably good right now considering what they're in.
What was the drive level (volts) of this measurement?
 
The satori MW16P 4ohm is probably the best larger driver I've heard full range. When I first got them I threw them on a small open baffle and boosted the bass a little...for a 6", that one did surprise me. Very open back also, and the rear radiation corrects the polar response a bit and evens out the room.
Have you heard the MW13P-4?

fantastic driver.
 
just stumbled on diypole's spalted maple....awesome
it reminded me of these I made many years ago with the tangband w5-1612
sphere.jpg

the baffle I took from Harry Olson's book, and it really does make a difference.