I ran 1.6s with 100 tube watts years ago. That same amp would NOT power the 3.5r. But with 400 watts on tap you should have no problem with the 3.7s.
Magnepan and Bob Carver Raven amps
I know the Magnepans are not very efficient and most of the amps that are usually paired with these speakers are not to my licking.
I own the Bob Carver Raven mono block amps; Will these amps provide sufficient power for the Magnepans? They are rated at 350 RMS at 8 ohms and 400 at 4 ohms, but they are tubed so that may matter.
I was considering either the 3.7i or the 20.7.
ozzy