I have just purchased the EPOS ELS 5.1 speakers and wish to know what cable I use to connect the ELS SUB to my ARCAM AVR250 Amp. The Amp has an Audio Preout socket (looks like a coax) which I need to connect to the low-level sockets on my Sub (L and R) Do I use ordinary phono cables or what? If so how do I connect it to both L and R? Just to help here is a close up of the back of the Amp courtesy of a mag: back of Arcam AVR 250 (.pdf) and the manual of the EPOS ELS Sub: Manual of EPOS sub (.pdf) Thankyou for the help EDIT: I think they I may need a phono to phono cable but I can't be sure. Would I need to split it for the L and R or could I use either?