I need help hooking up Merlin vsm mme Bam to avr

the Bams input and output terminals are not color coded, wich is positive the top or bottom posts of the bams?, its so frustrating that they're not.
thanks

when you look at the back of the bam the connectors to the right are output and the ones to the left in the middle of the unit are input. the connectors on the bottom are right and the ones at the top are left. all bams are "marked" in this way unless you have a very old one. the markings are there.
bobby

It does not appear that your AVR has a tape loop, so you will have to insert the BAM between your source and the AVR. CD output to BAM input, BAM output to CD input on AVR.

the only marking on Bam is input/output no pos/neg markings red/white terminals on the Bams are same color.
I assume that pos/neg dont matter in the bam terminals.
in anyway the change is subtle, I shut the sub off and trying to adjust bass from speakers looking to have more punch, if my crossover is at 80hz I wont benefit from speaker lows so I set it on 40hz.
Is this about right for the crossover?
Sounds awesome Bobby!
thanks

Swampwalker, thanks for looking into this, I did the hook up you suggested and it works well.
thank you very much for your input.
Roger