On April 11, 2017 at 22:38, highfigh said...
If it's a DKC800, look underneath for a control box. Knowing that it's a Disklavier, or even that it's a Yamaha woild have told me it's already set up for sound and after looking briefly at the manual, I saw that it is, assuming the box is still there.
Look at pg 9.
Here's the manual-
[Link: yamahaden.com]I read that the other day. The way I read it, the RCA outs are only for the accompaniment, not for the piano sound as well unfortunately, so those outputs would have to be mixed with a pickup.