I world say yes but start with 1 http://www.trewaudio.com/store/PSC-48V-Phantom-to-12V-T-Power-Barrel-Adapter.html
are there spots of red paint on them for Red Dot? if so you will need a cable that flips pins 2 & 3 between the converter and the mic
a 816, converter barrel and custom Rt. Angle XLR will just fit in the Rycote for the 815/6