I think I may have found the answer using the search engine - but I'm not 100% sure - so I thought I'd ask the forum. I have a REL Storm Mk1 - with Neutrik high input levels and twin phonos. In my living room I have 2 setups - one for AV and one for music (gave up trying to get AV setup sounding good for music) What I want to do is use the sub for both. What I want to do (but not sure if it will damage the REL) is - from AV amp connect the low level LFE output and from Arcam music amp connect via speaker/high level Neutrik cable. Now obviously won't be listening to music and AV at the same time .... but there could be the odd instance where one is left on briefly whillst the other one is on - if the REL gets both inputs at the same time will it do any damage ? I read one post on here saying that it would do damage and another that just said it "summed" the inputs. Any ideas ? Thanks for any help, best regards, Mark.