This MUST be a bug. The helm obviously needs a voice modulator. I hope they fix this soon because I spent a lot of effort to get this and it would be a shame to never wear it because of this.

I couldn't find a "suggestion" forum anywhere, but I would still like to suggest that Bioware implement a way to remove the red "out of range" and "insufficient rage" type error messages scroll the middle of the screen while spamming buttons. Granted, at least there isn't a verbal queue, but it is still mildly annoying to some players.