Andrew Everard:
biggus_1961:but do i connect the speakers 'b' wires to 'from amplifier' or 'from speakers' on the back of the BW ASW1000 sub ? I tried 'from amplifier' and got a humming noise so i disconnected it quickly.. To me it would seam logical that speakers 'b' from an integrated amp should be connected to 'from amplifier' on the sub...........
Yes, the 'from amplifier' connection should be used. The humming suggests the connection wasn't correct, and some subwoofers have an 'earth lift' switch to deal with hum problems.
I'd stick with wiring the sub in parallel with the main speakers, using the same terminals, if this problem persists.
Andrew, I think you gave the wrong advice here. On the back of the Sub I would think 'from speakers' means high level, and 'from amp' means low-level. Thus if wiring from the Amps speaker outputs you want to use the Sub's 'from speakers'.
Thanks.