We get a lot of new information on the inner workings of these AvantGrands from these shots. We should let dewster know so he can add it to the nekkid DP thread and also maybe he (or some other people) can give us an analysis of some of the guts. This is the first picture of the brain board that I've seen, for example. Perhaps we can infer how much memory is used to store the samples, for example?
I actually tried (given my meager photography skills) to capture some shots of the circut boards, since I knew there would be some interest, and yes, I even thought of Dewster at the time!
1. Do you remember specifically which adjustments were made? Anything you recall would be helpful. Was part of the process lubrication? Did he mention anything that surprised him about how it was set up?
Here is what he did:
-removed the lid, front rail, front panel and music rack, rear panel, fallboard, keyslip, key blocks
-disconnected wiring and removed the circuit board tray
-removed the action stack
-eased all keys at the balance hole and checked all key friction points (no action required)
-changed the fulcrum at the balance hole
-checked friction points on the hammer assembly centers (no action required)
-changed the jack/knuckle position slightly lighter than Yamaha standard to reduce after-touch resistance
-adjusted the jack/repetition arm height to slightly closer than Yamaha standard
-checked the let off point (no action required)
-replaced the action stack
-re-set the drop slightly lighter than Yamaha standard
-adjusted the key dip slightly lighter than Yamaha standard
-re-assembled the unit
-hid all the extra parts that were left over in the back yard
2. Why did it take so long to do the regulation?
First one he had worked on, so disassembly took longer - specifically getting the electronic parts out of the way, for access to the mechanical components. I was the guinea pig, in that respect, and was not charged for the extra time.
3. Were there any further adjustments offered that you did not take him up on? Was there anything you would have liked changed that he was unable/unwilling to do?
There are further things that can be done, but this was a good starting point. Taking things further starts to risk things like reduction of dynamic range, etc. He is certainly willing to do more. I'm going to live with the instrument for awhile, before determining if I want more work done.
4. Did he imply that the retailer should have set it up differently, or was it poorly regulated and adjusted from the factory?
All pianos need setup, apparently, and can be improved - although not everyone is fussy to the point of feeling this needs to be done. Simply playing the piano (a lot for a long time) will not solve all of the problems.
5. How much harder (if at all) was it to lighten up the action compared to an acoustic? Or did he just reduce problems with friction?
Not harder, once the electronic components were removed. There were symptoms of friction, and many adjustments made to deal with these
5. In what way does it feel different when played now?
- is somewhat lighter, but it's still an acoustic grand action, so nothing like a digital action (however, transitioning from MP10 to N3 is smoother)
- even throughout
- much more responsive to volume (better control) (greater range)
- much more responsive to gesture
- much more enjoyable to play
- before I would focus on the action, more than the sound
- now it is the other way around
- strangely, the piano now sounds better with the volume cranked up all the way