Yamaha series horns
Spiro Grima
I am not sure if my other article made it here, so here goes:
The Yamaha regional rep to the music store I work in just gave us a
clinic on whats new (I am a horn player, so I paid most attention to
that part of the clinic!!)
Yamaha has changed the model numbers of their horns slightly. What
used to be the 868 custom horns (867) series is now known as the 667
and 668 "V" series. The main differences between the 668-667 V
series and the regular 667-668 is that the V series offers hand
assembly of the horns, engraved valve caps (very pretty), unlacquered
finish (or nickel silver in the 668V) and of course Yamaha's new "dual
plane valve" (more on this in a later article). The reason for the
change was that the original 600 series were pro horns, and Yamaha
wanted to keep all the pro horns in the one model number. Many people
thought the 600 series (when the 800 came out) were student model
horns at a ridiculous high price. People thought the 800 was the only
pro series.
The 800 series now refers to the custom double-descant horns (881-882
) and the custom triple horns (891-892) . This seems to make more
sense to me as well...
Let me know if anyone is interested in finding out more about the new
dual plane valves...
Sander Gielen
[snip,snip]
| Let me know if anyone is interested in finding out more about the new
| dual plane valves...
Yes, I am interested!
Greetings,
Sander
_________________________________________________________________________
| Sander Gielen, research assistant; Eindhoven University of Technology |
| phone: +31 40 2472789 Dept. of Mechanical Engineering |
| fax : +31 40 2447355 ___ Section Engineering Fundamentals |
| PO.Box 513; 5600MB Eindhoven (o o) The Netherlands |
-----------------------------ooO-(_)-Ooo---------------------------------
Spiro Grima
>Spiro Grima (spiro...@odyssey.on.ca) wrote:
>[snip,snip]
>| Let me know if anyone is interested in finding out more about the new
>| dual plane valves...
>Yes, I am interested!
>Greetings,
>Sander
>_________________________________________________________________________
Greetings to you, Sander!
According to Stan Klebanov (regional sales rep and former product
design specialist for Yamaha Canada), the dual plane valve were
specially developed for the 667 and 667V series, which as you may
know, are Geyer wrap horns. The principal "problem" that exists in
the Geyer wrap is the long throw valve. In this valve, the air stream
travels in one direction when playing on the F side, and *switches*
direction when you switch to the Bb side. This causes a longer pause
of the air stream, and abrupt air "turbulence". This -as many
'regular' Geyer players know (myself included) sometimes prevents the
note from speaking when switching say, from middle C to 4th space E.
Now, here's where I wished I had a scanned picture of the dual plane
valvle schematic. The valve is designed to keep the air moving in the
same direction in both sides of the horn. I have tried it, and you
cant even tell you have switched to the Bb side. It is really
smooth....
Hope that gives you some info on it... Oh yeah, according to Yamaha,
in their world-wide sales of horns, the 667 and 667V are now
outselling the traditional Kruspe design (668).
take care,
SG
Stan Klebanoff
>san...@wfw.wtb.tue.nl (Sander Gielen) wrote:
>>Yes, I am interested!
>>Greetings,
>>Sander
>>_________________________________________________________________________
>Greetings to you, Sander!
>take care,
>SG
It's Klebanoff not Klebanov and just to make sure we're clear on this
Yamaha designed the dual plane valve for the 667V model and the 881
descant and 891 triple horns only. The 667 still has four regular
rotors and follows the traditional Geyer style design. The 667V may
look like a Geyer but it is more like an Alexander in playing
characteristics.
Thanks. Stan Klebanoff sk...@io.org