Mike,
Your dealer is just wrong. All Nautilus speakers accept spades, as well as bananas or bare wire. I've used all three on my N803's.
In fact, the jumpers B&W includes for non-biwire setups actually come with spades on one end! You can see a diagram in the owner's manual, which is available on B&W's site at the address below. Buy 'em and enjoy!
http://www.bwspeakers.com/downloadfile/speakermodel/ACF272C.pdf
Your dealer is just wrong. All Nautilus speakers accept spades, as well as bananas or bare wire. I've used all three on my N803's.
In fact, the jumpers B&W includes for non-biwire setups actually come with spades on one end! You can see a diagram in the owner's manual, which is available on B&W's site at the address below. Buy 'em and enjoy!
http://www.bwspeakers.com/downloadfile/speakermodel/ACF272C.pdf