I had their number, but I can't seem to find it now. Contact elettromedia. They make Hertz as well as Audison. Once you find their US toll free number, ask for dealers. Very helpful, I found five in my area.
I hope Hertz is not the new bandwagon ish. I was really considering getting them for about a month now, but I like having different stuff from what many people have.
I just wish I could justify spending 1k on a component set for some Mille's. I'll stick to the Hi-Energy.
EDIT: Found the number. Here you go.
877-567-3030