tuning with Dampp-Chaser-pitch

[Jon Page]

At 01:36 PM 3/23/2002 -0800, you wrote:
>I install lots of de-humidifier/humidstat "partial" systems in my neck  of 
>the woods, (Beach area of SO CAL) where the average humidity is 50-100% 
>for most of the year. My question is: when installing this system in NEW 
>pianos, which is almost always the case, I really need to do a signifcant 
>pitch raise to at least A442, even if the piano is already at A440. I do 
>this because i know, from experience, that the dehumidifier will "leach 
>out" excess moisture from this new piano, which is in a generally high 
>humidity environment. In addition, the new piano wire will also settle and 
>stretch, so if i tune it where it is, at A440, it WILL be waaaay flat when 
>i come back, even in 3 months.
>So, I'm having a little dilemma trying figure this one out; the company 
>will NOT pay me to pitch raise a piano if it's already at A440 (Warranty 
>tuning), so then the only alternative i can see is to charge the customer 
>when i come back in 3 or 6 months for the pitch raise it WILL need. I'm 
>curious as to what other's would do in similar scenarios. Thanks in advance!
>
>Terry Peterson
>Terry

You can safely raise the pitch four cps without drastically affecting the 
outcome of the tuning.

Regards,

Jon Page,   piano technician
Harwich Port, Cape Cod, Mass.
mailto:jonpage@attbi.com
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