Pipe Scaling System-How does it work?

[soubasse32]

Re: Wooden Pipe Blocks



Ohhh... Now I understand what someone means when they look at the blower and say

That puppy is putting out a lot of wind. [;)]

I guess a Tuba Mirabilis would require a Saint Bernard, at least.

[myorgan]

Re: Wooden Pipe Blocks



[quote user="mpsnknox"] Well.... puppys pant harder than 2 1/2" pressure... [/quote]

LOL!!! <As my Beagle puppy puts his muzzle to my ear!>[&]

Thanks for the chuckle of the day!

Michael

Re: Wooden Pipe Blocks



small rooms tend to need small to moderate scales

disagree

the pressure and tonal finishing can allow for large scales and thus gentle fullness in modereate and small spaces

i used 43sc for the 8 principal on the gt

44 scale for the 8 diapason

47 scale for the geigen and matching celeste so yes these strings were large as were the choir gemshorns at 45 scale

reeds were 4'' d at 8' c on the trumpets except the big one which was 5-1/2;; d

the pedal reed was 8'' d at 16'C

gt mixture was based on 47sc at 8' C

sw 2' was 68 sc

1-3/5 was 66 sc

2-2/3 was 60 sc

koppelflute was variable from 60sc enlarging as it ascended upward

the flute oktaviante started at 48 sc a 8' c and was 34 sc at the top

the 4 ranks of the cornet V were common metal nachthorn based on 40 sc with 1/6 mouths

the 8 bourdon was 50 sc in the bass and based on 45 sc at tc

[mpsnknox]

Re: Wooden Pipe Blocks



Well.... puppys pant harder than 2 1/2" pressure...

Whats your Idea of large scales?Where all the stops of large scale? Even thestrings?

You can not deny however large rooms need big scales and small rooms tend to need small to moderate scales.

Re: Wooden Pipe Blocks



Conventional wisdom=scaling is configured on size and cubic volume of said room.

Not so.

Idid a job in 1990 for a modest room and used big scales on low wind like 2-1/2''. The results were a gentle fullness.

[mpsnknox]

Re: Wooden Pipe Blocks

scaling all depends on the size (qubic volume) and the acoustics of a building.

[soubasse32]

Re: Wooden Pipe Blocks



[quote user="Havoc"]You both do realise you're talking about something different? Sesquialtera means the block on the outside that closes the foot and forms part of the mouth while Violoncello means the block inside that forms the windpassage in the foot.[/quote]

Oliver C. Faust in his 1905 book "The Pipe Organ and Player Piano - Construction, Repair & Tuning" sums it up rather well:

Wooden pipes are formed of the following parts: body, block, throat between the block and the cap, foot, upper and lower lip, and mouth.

Hedoes gloss over the term'cap', but that is what I understandcloses the front of the block.

[Havoc]

Re: Wooden Pipe Blocks

You both do realise you're talking about something different? Sesquialtera means the block on the outside that closes the foot and forms part of the mouth while Violoncello means the block inside that forms the windpassage in the foot.

I do have somewhere an article where they measured the differences between different types of blocks (the Violoncello types). The differences are in the way the pressure buils at the slit of the mouth and turbulence losses due to directional changes and sudden volume changes. So it will likely affect the attack of the pipe.

The article in question is by Dr. Andreas Richter and was published in "Die Hausorgel" edition 9/89 titled "Strömungsmechanische Aspekte in der Kernkammer einer Orgelpfeife"

Re: Wooden Pipe Blocks



I'm sorry I did not make this clear. Here is a link to show a picture of some:

http://www.rwgiangiulio.com/construction/bourdon/

Violoncello

Re: Wooden Pipe Blocks

The block is the square piece of wood that is affixed to the front of the pipe and covers the area beneath the mouth and forms the front lwer section of any wooden pipe. Sanding the inside part of the block is a technique used to affect the tone.

[Havoc]

Re: Wooden Pipe Blocks

Can you explain what you mean by "blocks"? I can't imagine what you mean.

Wooden Pipe Blocks



In building wooden pipes, what are the differences in between German Blocks and English Blocks? (Construction wise) Do they effect the tonality of the pipe? What kind of sound do each cause the pipe to sound like?

Violoncello

Re: Pipe Scaling System-How does it work?



I did![:D]

...and I really liked what I heard, too. It gave the Diapasons body, but they were not round or extremely tubby in tone, they also had a distinct clarity in their timbre. They did not sound stringy in tone at all. If you're curious, the stops were called: 8' Diapason, 4' Principal, and 2' Plein Jeu V. I do not know if the mixture was slotted or not, but it blended perfectly with the 8' and the 4'. The pipes sounded almost as if they were trying to explain something to you.

New question: Are English Diapasons slotted? Slotted Diapasons seem to fit Audsley's description of "an ideal stop of Diapason-tone". Does the slotting of a pipe impart the special "English tone" to Diapasons? Did companies like Moller, Buzard, Wicks, etc. use slotted pipes for for their so-called "English Diapason" stops?

Violoncello

[soubasse32]

Re: Pipe Scaling System-How does it work?



[quote user="Violoncello"]Also, how does slotting a pipe change its timbre? (Principal pipes in particular.) There are a few organs in my area with Diapasons that have "slotted pipes". Is the slotting carried up into the higher pitches ( 1/2' C, 1/4' C?) and can one make a Mixture of slotted pipes? (Would it even sound good?)[/quote]

Here is an interesting page that discusses slotting; many of your questions are answered there.

It is quite difficult to describe timbre in writing, especially as it is a very subjective thing.

My suggestion is to go to those organs in your neighborhood that have slotted pipes, and listen. [:)]

I would be interested to learn of what you hear.

[saudade]

Re: Pipe Scaling System-How does it work?

http://www.organsupply.com/catalog_o...20Supplies.pdfthis might be helpful also. 3 or 4 pages down etc.