Atlas Sound makes meat and potatoes 70 volt parts. More then you can imagine..
JBL Pro makes a wide range of 70 volt speakers and 8 ohm speakers. They offer a nifty solution for folks who need a dual zone preamp with paging, ducking, locked out control panel, an inexpensive source selector; I spec lots of them.
Crown amplifiers offer an unusual option to those in the home arena; their 70 volt amps can also run 8 ohms.
Buy an amp in their ch series, run one channel on 70 volt for mids and highs, and the second channel on 8 ohm for subs. Wanna rock your world? this will.

If you'd like info on this stuff, leave a post and I will respond via email to you directly.