Duplex

[Richard Brekne]

Yes... well thats one opinion Dan. There are quite a few out there that express
another opinion. I personally dont find anything particular pleasing about a
front duplex tuned to a octave or a 5th or variants.... ends up sounding like a
whistle in nothing flat.  Much nicer tone quality is achieved when the duplex is
detuned as a host of technicians have touted these past years. Tone quality is a
subjective matter. As far as Sustain....... I fail to see any proof anywhere
that the "tuned" duplex in itself increases sustain.

Duplexdan@AOL.COM wrote:

> Dear Don,
>
> With all due respect to your credits which seem impressive, AMUS, RMT, RPT,
> ETC,
>
> your interest in duplex scale tuning should be referred to other technicians
> with greater credits than mine. I refer you to Hermann Helmholtz and CFT
> Steinway. they invented the duplex scale. My only contribution is developing
> a method to tune it.
>
> As far as band pass filters absorbing frequencies, I cannot comment. I can
> only state with twenty years of experience and limitless backup, that tuning
> the duplex scale of duplex scale designed pianos contributes to the sustain
> and quality of tone of these pianos.
>
> Dan Franklin, RPT
>
>

--
Richard Brekne
RPT, N.P.T.F.
Bergen, Norway
mailto:rbrekne@broadpark.no