After 5 years that I'm listening with Ew Isabel I think that they are very good speakers. But I found that they prefer a valve amp. Or it is me that I prefer valve ? So the spectral 50, that is very good but a little too analitical, was changed for a 6550tube 50w x2 amp, that have done more air and musicality to the final result. without loss of analisys.
I have some question about the rightness of the crossover frequency (3500hz), when maybe a 2200 should let the tweeter more work to do (some like the merlin vsm for ex.). Some thoughts about ?