MCR audio pot optional?

MajorHavoc

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I am building a MCR to JAMMA adapter for my test bench and have some questions on the audio.

In the Tron schematics, VR1 (audio pot, AFAICT) is labelled optional. Is there another way to adjust the volume?

I plan to bring the left and right audio into a single signal for the audio amp. Are 10K on the MCR outputs tied to a 1K on the line in on the audio amp reasonable values?

Thanks!
 
I can't see how its optional. The pot is on a breakout box with the coin up and test mode switch. Neither the board stack nor the amp board have a pot for volume control.
 
I believe there's a blank location on the board for a pot, between the header pins. It would take the place of the remote pot.
 
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