[Josh Siegel]

Al, thanks for the words of warning regarding the amp's and their usage - I'm going to try to find some safe way of doing this, and certainly wont "play" with anything I feel unsafe with or that I haven't learned about. The relatively low frequencies should make this easier (0-150Hz, not kHz), but I understand the risks inherent in working with any high-wattage circuits.
Secondly, I do realize the flammability of hydrogen and I have flame arrestors/bubbler's and other precautions to ensure the safety around the generator. Given that it is not being stored and that hydrogen dissipates so quickly, the 1-1.5LPM that I've been getting isn't really a problem, unless presented with a flashback that the bubbler and arrestor will stop.