Piano Rims (rambling post)

[Phillip L Ford]

On Sun, 30 Dec 2001 09:38:37  
 Delwin D Fandrich wrote:
>
>----- Original Message -----
>From: "Phillip L Ford" <fordpiano@lycos.com>
>To: <pianotech@ptg.org>
>Sent: December 30, 2001 6:00 AM
>Subject: Re: Piano Rims (rambling post)
>
>
>> On Fri, 28 Dec 2001 09:31:26
>>  Delwin D Fandrich wrote:

>> I've heard you say this before and it's confused me
>> every time.  Perhaps I need a little more tutoring
>> on this.  I believe you want high impedance in the
>> treble and low impedance in the bass.  Is that
>> correct?
>
>No. It's just that mass has more effect on high frequency impedance and
>stiffness more on low frequency impedance.
>

Sorry, but I'm still confused.  Does this mean that you want
low impedance in the treble and high impedance in the bass?

>
>
>> So I would think stiffness would be more critical in
>> the treble and mass more critical in the bass.  Or
>> in other words, I would think you want to insure that
>> you have a lot of stiffness in the treble and you
>> have a lot of mass in the bass.  Do I have this
>> backwards?
>
>Yes. Try moving a box of tuning pins back and forth slowly. Now try moving
>it back and forth quickly.


>Del
>

So, this means that you want stiffness in the bass and mass
in the treble?

Phil F


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