I'd tend to go for the SCM19. ATC's all sound similar - but there is more transparency, SPL and bass extension as you go up the line. The 19 has the same mid bass driver as the pro models but with a simpler modern cabinet construction and different tweeter (so it is great value and has been road-tested through years of home and studio use - think Toyota Land Cruiser). It is a bit early to tell if the 11 will be equal to the legacy of the driver in the 19.
I can't say how it will sound - no experience with Spectral. All I can say is that 90 watts is just enough to drive them and ideally most people want 200+ watts. They are not hard to drive but the sensitivity is low and the pro driver can take darn near everything you can throw at them without flinching - so they sound good when driven hard and loud.
I can't say how it will sound - no experience with Spectral. All I can say is that 90 watts is just enough to drive them and ideally most people want 200+ watts. They are not hard to drive but the sensitivity is low and the pro driver can take darn near everything you can throw at them without flinching - so they sound good when driven hard and loud.