Yeah, I read that the Neutrik will use the left and right to sum and mono the signal. My Quake only has a single LFE RCA input and was designed with the intention of allowing an AV amp to be hooked up as well as a stereo.
REL state very clearly to always choose the high level connection over and above the low level. In the case of the Quake I imagine this is because of the single LFE input. AV amps probably use a single one too, not sure.
I read last night on some other forums that if you connect to the high level you get a good sound but to ensure that you get the "real low stuff then connect the LFE too"
. I tried it for kicks and got the advantage of two volume controls
I think the only benefit I could find was that I seemed to have gained some extra volume control steps, but given that the phase of the two pres was set differently, I'm not surprised people hook both up to get different sound.
I'm back with the high level now because I realised that my LFE test wasn't fair. I'd changed the phase of the input and found 180deg to be louder. When I repeated this with the high level it sounded exaactly the same.
Right, that's it, no more sub tweaking until I buy a new amp. It's wearing me (and my girlfriend) into the ground.
Let us know how you get on matengawhat! Good luck