Hi just bought a new 700 RBHII along with a used RBH115 cab. On the cab, the tweeter is very noisy (hiss), it seems to work fine and can be rolled off via the attenuator so its quiet. Is this normal or is it faulty? I have a few days left to return it if faulty so any help appreciated. Also, i never got a bi-amp speakon cable with the head as they are now shipped with cabs. I never got one with my used cab though. Will any generic 4 pole speakon cable do or will only the GK one work to bi-amp? i want to try this but the GK cable is double the price here in the UK of a 'ordinary' 4pole speakon cable? Oh one other thing, what do people do with the head? Do they rack mount it or keep/transport it another way? It looks so nice i want to keep it pristine! Many thanks.