A couple things have always bothered me re: the traditional Orff bass bars that are commonly available. The bars are really narrow compared to the box they sit on, and each tone you buy sets at a different height. So a collection of these bass bars seems like several different random single note instruments, with the notes so far apart, both sideways and up/down-wise. Poor young malleteers!
So here are my Bourne Marimbas Bass Bars with double-wide American ash bars perched on boxes that share the same height - set them up in a row and you have .... ONE INSTRUMENT! Music teacher Bart Roderick of Yakima, WA has a full set of these now, he seems to like them.
My first generation of these bass bars left me unconvinced - I couldn't seem to dial in a consistent resonance on the boxes. But I do believe I've solved those problems, so these are available if you yearn for bass bars that are created equal, united side by side to form a more perfect bass marimba!