I have just bought a CHT-10 Velodyne sub from Uncle Eric and I am having problems setting it up. I have a Denon 1801 receiver and Bose AM6 speakers. What leads do I need and what is the best way to connect sub to receiver? There is a pre-out on the receiver marked "sub" but this is a single lead yet the input on the sub needs both L & R inputs. There are also spring clips on the sub - do i need to attach the speakers? They are currently attached to the Accoustimass module and then this is linked to the receiver. Any help would be greatly appreciated.