[CAUT] Some like it Hot/Some like it Cold!

[Dan Reed]

Science please...

The jack has escaped, the energy has been transfered, "then" the front 
rail punching is contacted...

Where is the science of how the tone is effected by a hard or soft 
landing?

Dan


On May 19, 2008, at 7:07 PM, Jon Page wrote:

> A conical Crescendo punching will focus the tone.
>
> Being a firmer punching there is less compression on a hard blow
> so the dip (after touch) is more even between pp and ff.
>
> The straight-sided Crescendo punchings do not have the same tonal focus
> effect but are an improvement over the standard woven punchings.
>
> At the KC Convention I tested these with a few people at hand. The
> straight-sided punchings improved the tone over the woven punchings
> and the conical-sided punchings were a tonal improvement over the
> straight-sided ones. The conical-shape or tapered sides do make a 
> difference.
>
> If you turn it upside down the effect is negated. I've displayed this 
> to customer's amazement.
>
> Recently, I received a fairly new studio upright in my shop. I noticed 
> that there
> were voicing issues. When I disassembled it, there were woven 
> conical/tapered f/r punchings. I knew what some of the voicing problem 
> was... some punchings were
> inverted. I placed all the punchings with the narrow side up, problem 
> solved.
>
> They are too firm for some pianos causing noticeable impact sound.
> On those pianos the pear green punchings work well.
>
> As for the 3/4" punchings, they do not offer as much support and can 
> allow
> the key to rock side to side more easily than the wider ones. I would 
> use these
> on a spinet or something else of no consequence.
> -- 
>
> Regards,
>
> Jon Page
>