Also I found a chart in a Swedish magazine that tested the impedance of the classe:
8ohm: 135W
4ohm: 245W
2ohm: 435W
1ohm: 700W
(it actually listed 5 different readings by degrees which I don't understand)
So while not exactly doubling it gets pretty close. It seems like 435W at 2ohm should work well - I think the Synchrony Ones bottom out around 2.5 ohms or so.
8ohm: 135W
4ohm: 245W
2ohm: 435W
1ohm: 700W
(it actually listed 5 different readings by degrees which I don't understand)
So while not exactly doubling it gets pretty close. It seems like 435W at 2ohm should work well - I think the Synchrony Ones bottom out around 2.5 ohms or so.