Having just tried and failed to use a TANNOY SFX SUB barely a rumble. The dealer seems to think the canton is incapable of driving this or any other subwoofer. This sub experiment was to try and gain a wider sound stage something the canton lacks lovely sweet but narrow sound it has. Demoed a yamaha ysp2500 fantastic enveloping sound but nowhere near as sweet sounding. Any help regarding subs appreciated.