Disklavier

I was told by my Piano dealer when I bought the DC3a  new that one 
could be added but to me Yamaha kind of drops the ball on not 
provideing one  matched to the piano. They make an extensive line of 
home electronics includeing subwoofers. Nothing in the manual really 
says a lot about adding in one or adding larger speakers. I am so happy 
with the improvement just wanted to let others know about it. A big 
improvement to me in sound of the background instrumentals. I think 
Yamaha could provide enhancements to mark3 pianos but they don't.  Just 
like detroit planned obsolescence.