I need help hooking up Merlin vsm mme Bam to 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

The terminals on the back of the BAM are not positive or negative, they are either left or right channel. Just make sure the left output of the AVR is connected to the left input of the BAM.

In most amps, the right channel can be identified with a red marking, perhaps this is causing the confusing with the +'ve -'ve.

Brf,
thats what was confusing me, no pos/neg on bam.

The way I have it is,
CD player audio out to Bam input.
Bam output to AVR CD input.
you're saying the avr output to bam input?
thank you for trying to clear up my confusion.
Roger

1) CD Player right channel output to BAM right channel input.

2) BAM right channel output to AVR CD right channel input.

Repeat for left channel.