Tuned front duplexes

[Richard Brekne]

Delwin D Fandrich wrote:

> ----- Original Message -----
> From: "Phillip L Ford" <fordpiano@lycos.com>
> To: <pianotech@ptg.org>
> Sent: November 06, 2001 11:56 PM
> Subject: Tuned front duplexes
>
> > One thing I don't believe I saw mentioned in the discussion of front
> duplexes
> > is the carrying power of the sound with the tuned front duplex.  The
> noises
> > that are caused by these are certainly annoying when you're seated at the
> > piano.  However, I've heard more than one technician say that that noise
> > contributes to the carrying power of the sound in a hall.  Having never
> made
> > any direct comparisons I can't confirm or deny this.  Do others have
> comments
> > about this?
> >
> > Phil
> > ---
>
> To the best of my knowledge it has never been tested in any way. I have
> never believed this to be true though I've certainly heard it often enough.
> I've always felt it was just a way to make the noises that couldn't be taken
> away and kept away palatable to the performer and/or owner. Kind of like
> telling the artist that his seat is the worst one in the house and the piano
> really sounds best about ten or twelve rows back. If that is truly the case
> we should all be ashamed of ourselves.
>
> Del

Well, I have seen a demonstration on three occasions now where a Steinway D and
a Yamaha CFIII have been on the same stage, and 20 meters back or more the
Yamaha fades out and becomes difuse... especially the bass sounds like a mesh of
foggieness... The Steinway on the other hand pierces through the air crisp and
clear, and the bass is thundererous in comparison. . Now this does'nt
neccessarilly have to do directly with the front duplex issue, but I have no
doubt in my mind that carrying power is real enough.

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