stability question

[Tom Cole]

K Anderson wrote:
> 
> Hi, List,
 The problem
> concerns a Story & Clark #413683, one of the ones "Built for churches";
> it is a church's sanctuary piano & their main worship instrument.  It
> just will not stay in tune longer than about 6 weeks.

I service a church piano with a similar plight, a Yamaha P22 next to a
wall which has nothing but tall, curtainless windows letting in direct
sun which plays on the back of the little upright. Since there was no
hope of moving the piano to a better location, I installed a partial DC
system and fashioned a 1/8" plywood cover for the back to mitigate the
temperature variations. This cut back on projection significantly so I
miked the back of the soundboard and put a volume control box on the
bass cheekblock.

After the retrofits, the tuning was much more stable. And the pianist
likes being able to boost the gain for when the whole congregation is
singing.

Ironically, soon after all that trouble and expense, a member of the
congregation announced that she was moving out of the area and wanted to
donate her late-model Yamaha MX-100 (complete with spiffy plexiglas
front board) to the church. Naturally, the church accepted the gift and
now the P22 is in another building, well away from the sun.

So far, I have only tuned the new Disklavier Yamaha...

Tom

-- 
Thomas A. Cole, RPT
Santa Cruz, CA
mailto:tcole@cruzio.com