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Creating the lowly WOOL note.
http://www.luthiersforum.com/forum/viewtopic.php?f=10101&t=40786		 Page 1 of 1
Author:  the Padma [ Tue Jul 02, 2013 12:22 pm ]
Post subject:  Creating the lowly WOOL note.
Creating the lowly WOOL note.

You read that right.
This post is about wolf note tuning. More specifically "Creating the woof note."

Ya, I, me duh Padma know how to get rid of the lowly woof note...is part of out looferin around skills.

However in my next few builds me wanna elevate the woof. You readed that correctly.

Is like dis.

The challenge me has set is to build a dedicated open tuned C#m instrument with A at 432.1 minus 31.4 hz. which would place the low C# at 136.1 hz which is the Om* frequency. The cord would be all the black keys plus E which would be the minor. I wish to accentuate that minor.

So any input on what causes the woof is appreciated.

Any suggestions on carving the plates (arch top with oval sound hole) to create a woof at E at161.85 hz and or E"at 323.70 hz. is appreciated.

Any input is appreciate.


Blessings
with gratitude,
duh Padma


*Om frequency. Run searches on Om, OM chord, Om chant, 136.1hz -3 cents.


.
Author:  Rodger Knox [ Tue Jul 02, 2013 1:45 pm ]
Post subject:  Re: Creating the lowly WOOL note.
That's about halfway between the typical coupled main air mode and coupled main top mode. Bring the air mode up & top mode down. Simple as that. laughing6-hehe
Author:  Darryl Young [ Tue Jul 02, 2013 4:08 pm ]
Post subject:  Re: Creating the lowly WOOL note.
Raise the main air frequency up to the OM frequency by using a smaller (or thinner) body........or.......use a larger sound hole to raise the main air frequency. Or use a combination of these two options.

If you get a little above the frequency you want, you can add mass to the rim to lower the frequency down to your target.
Author:  theguitarwhisperer [ Wed Jul 03, 2013 2:32 am ]
Post subject:  Re: Creating the lowly WOOL note.
You could raise the main air by adding a side port. You could tune it by starting small and increasing the size until you hit the note, so to speak.

You could do this after assembly to fine tune it.
Author:  the Padma [ Wed Jul 03, 2013 11:43 am ]
Post subject:  Re: Creating the lowly WOOL note.
theguitarwhisperer wrote:
You could raise the main air by adding a side port. You could tune it by starting small and increasing the size until you hit the note, so to speak.
You could do this after assembly to fine tune it.




Thank you ...

Chatting with Trevor Gore in our PM's, he suggested messing around with the tuning of the woof and yup your suggestion of a side port is the ticket. He also suggested a "good book might help"....Me asked him if he could recommend one. laughing6-hehe
Me was wondering about fine tuning and this approach you suggests sure saves constantly pulling the back to modify the main air mode. In fact your suggestion now has me thinking about a port with a lid so to speak so as to have or not have that woof. Maybe even a iris type aperture to modify the "quality of the woof ."

So thank you!


blessings
Author:  Alan Carruth [ Wed Jul 03, 2013 1:38 pm ]
Post subject:  Re: Creating the lowly WOOL note.
I once worked on a baritone guitar that had a telescoping sleeve built into the soundhole. You could vary the length of the tube from about 1" long to 2", which made a useful difference in the pitch of the 'main air' resonance. It was a while ago, so I don't remember all the details, but there's another way to go, either with the main hole, a port, or both.

I once made a guitar that had all of it's main resonances near either D or G; the guy who got it played Irish music, and loved it.
Author:  theguitarwhisperer [ Wed Jul 03, 2013 8:19 pm ]
Post subject:  Re: Creating the lowly WOOL note.
I hope it works!
Darryl said raise the main air, and I've been experimenting with side ports lately and I noticed that the ones I put in my guitars had that effect.
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