Beautiful place to play!!!
On my S979, I put my mixer on the right speaker. Only because of being able to access the WAV file player on my Sonar (Roland) VS-100. Under the mixer, I put a non-skid piece of rubber so it doesn't slide off.
I put a 1/4" headphone adapter in the headphone jack to cancel the speakers. Then I just monitor through my DXR10s. I want to hear what my audience is listening to.
DNJ... Do you cancel out the internal speakers since you have the mixer in the left speaker?!?
Do you know that on PSR S-970 you can turn the speakers off internally without having to use a headphone jack? There are three options, ON, OFF, and AUTOMATIC (which shuts them off only when hp jack is inserted.