On the topic of the Churchill, although it has an efficiency rating of 95dB/8Ohm, the 15-inch Dual-Concentric driver does require a little more power to coerce good levels of dynamics to fill up a medium-sized room. My Churchill Wideband can be driven very satisfactorily with 7Wpc, although I must also concede to the immense dynamics and scale of the CW when they were driven by powerful solid-state amplifiers.
On the other hand, 3Wpc is a little underwhelming for the big drivers; but the real potential of an SET of such output is predominantly dependent on the actual design of its power supply section. I've come to learn that with serious efforts in equipping the amplifier with a powerful power supply, even an SET can push a lot of speakers in a medium-sized room, including the Churchill Wideband.
Constantine Soo
Publisher, Dagogo
On the other hand, 3Wpc is a little underwhelming for the big drivers; but the real potential of an SET of such output is predominantly dependent on the actual design of its power supply section. I've come to learn that with serious efforts in equipping the amplifier with a powerful power supply, even an SET can push a lot of speakers in a medium-sized room, including the Churchill Wideband.
Constantine Soo
Publisher, Dagogo