I've just acquired a Rel Storm Mk1 (cheers Flimber) and need to manufacture a new cable to connect it into the amp. This is going to be for the low level input on the Rel. The amp has a single phono socket pre-out for the LFE channel. I have seen a previous thread on this subject but for the life of me I cannot find it again on the search tool. How should I be attaching the phono cable end to the XLR male plug that connects to the sub? I have got a 5 metre phono to phono cable coming in the post and my intentoin is to chop off one RCA plug and attach the XLR male plug instead. I don't understand the concept about balanced and unbalanced connections so if anyone can shed some light on this it would be great also! Many Thanks, Phil.