"Sunfire would be a close second to REL. Happy Listening!"
I love Bob Carver and use a Sunfire amp, but their subs are far from great. If you have no room for anything larger, they can serve a purpose, otherwise they are best avoided. High distortion, poor response curve (QTC), and poor group delay. Thiel Small parameters didn't change for Sunfire, they just shrunk the box and the efficiency and then used power to try and compensate.
I love Bob Carver and use a Sunfire amp, but their subs are far from great. If you have no room for anything larger, they can serve a purpose, otherwise they are best avoided. High distortion, poor response curve (QTC), and poor group delay. Thiel Small parameters didn't change for Sunfire, they just shrunk the box and the efficiency and then used power to try and compensate.