I have an Eden WT-800 head and I use it exclusively bridged mono. Now, as instructed, I use only the Bridged Mono Out and I plug that into my D410XLT cab. However, it has come to my attention that there is a difference between a Neutrik NL2 and NL4 cable. Which is needed in a bridged mono situation or does it make a difference? The store I bought it from gave me an NL2..