Standard Drum Co. are a drum maker and restorer based in Kansas City. Here's one of their home-built snares!

Yes folks, this is a 15-inch diameter drum, and it's 7 inches deep.

That extra size obviously brings down the pitch; combine that with the warm mahogany shell and you have a pretty remarkable sound at very low tunings. Need your snare sound to sound like "boff?" This is it.

Very clean!