The Acoustic Guitar Forum

Go Back   The Acoustic Guitar Forum > General Acoustic Guitar and Amplification Discussion > General Acoustic Guitar Discussion

Reply
 
Thread Tools
  #16  
Old 03-27-2024, 06:31 AM
abn556 abn556 is offline
Charter Member
 
Join Date: Apr 2023
Location: Kingwood, TX
Posts: 1,327
Default

Are you sure you don’t have a fret issue? You could have one high fret that is causing this.
__________________
Gibson and Fender Electrics
Boutique Tube Amps
Martin, Gibson, and Larrivee Acoustics
Reply With Quote
  #17  
Old 03-27-2024, 06:49 AM
stephenT's Avatar
stephenT stephenT is offline
Charter Member
 
Join Date: Feb 2005
Location: GA & MN
Posts: 4,669
Default

A wolf tone (and added harmonic to a bowed note) and a dead spot are two different issues commonly misunderstood on the AGF.

My suggestion to the OP, try a three day ToneRite treatment. Dial in the vibrations for a lower register.
Reply With Quote
  #18  
Old 03-27-2024, 08:01 AM
warfrat73's Avatar
warfrat73 warfrat73 is offline
Charter Member
 
Join Date: May 2010
Location: Syracuse
Posts: 3,956
Default

The "Lute Hole Company" makes sound hole inserts that don't look terrible which might do the trick:

https://www.musiciansfriend.com/acce...BoC62sQAvD_BwE
__________________
"What have I learned but the proper use for several tools" -Gary Snyder

Bourgeois DR-A / Bowerman "Working Man's" OM / Martin Custom D-18 (adi & flame) / Martin OM-21 / Northwood M70 MJ / 1970s Sigma DR-7 / Eastman E6D / Flatiron Signature A5 / Silverangel Econo A
(Call me Dan)
Reply With Quote
  #19  
Old 03-27-2024, 08:09 AM
TobyB TobyB is offline
Registered User
 
Join Date: Feb 2020
Posts: 114
Default

FWIW ...
I have a fan-fretted walnut-sitka Fc ... and have just checked it carefully ... and E, F, F#, G, G#, A ... and up and down and all around ... and I am hearing nothing untoward.
Not noticed anything on my other Lowden's (O & S) either.
Reply With Quote
  #20  
Old 03-27-2024, 10:47 AM
Jimi2 Jimi2 is offline
Charter Member
 
Join Date: Dec 2017
Posts: 1,228
Default

Quote:
Originally Posted by abn556 View Post
Are you sure you don’t have a fret issue? You could have one high fret that is causing this.
G on the 6th string (G2?) always “thuds” - lacks sustain, regardless of tuning. It happens at the third fret in standard, fifth in drop D, seventh in open C. So it must be something with the resonance of the guitar.
Reply With Quote
  #21  
Old 03-27-2024, 10:51 AM
Jimi2 Jimi2 is offline
Charter Member
 
Join Date: Dec 2017
Posts: 1,228
Default

Quote:
Originally Posted by warfrat73 View Post
The "Lute Hole Company" makes sound hole inserts that don't look terrible which might do the trick:

https://www.musiciansfriend.com/acce...BoC62sQAvD_BwE
Thanks, that might be worth a try.
Do you think one of these might also work? Doesn’t block the sound hole, but maybe it would change the resonance?
https://www.sweetwater.com/c1247--Mi...E&gclsrc=aw.ds
Reply With Quote
  #22  
Old 03-27-2024, 10:56 AM
JCook1 JCook1 is offline
Registered User
 
Join Date: Sep 2011
Location: Cape Cod, MA
Posts: 713
Default

You can buy wooden sound hole inserts online. Here's one site that has them, some at fairly reasonable prices.

Jack

http://lutehole.com/
Reply With Quote
  #23  
Old 03-27-2024, 11:13 AM
Alan Carruth Alan Carruth is offline
Registered User
 
Join Date: Feb 2011
Posts: 4,198
Default

stephenT wrote:
"A wolf tone (and added harmonic to a bowed note) and a dead spot are two different issues commonly misunderstood on the AGF."

Actually, the resonant setup that produces the 'cello wolf is exactly the same as the one that causes the dreaded 'thuddy G' on guitars. The only difference is that on a guitar you're plucking the string, while the 'cello is bowed. It's the continuous input of energy by the bow that causes the string to shift pitch between the fundamental and second partial tone several times a second, and produces the various growls, wails and warbles of the 'cello wolf. If you could bow the guitar perpendicular to the top plane it might well do the same.

warfrat73 wrote:
"The "Lute Hole Company" makes sound hole inserts that don't look terrible which might do the trick:"

Those 'feedback busters' usually work by reducing the power of the 'main air' resonance, but often don't alter the pitch much. They might still do the trick, though.

You can find the pitch of the 'air' resonance by laying the guitar down in your lap and pinching the low E string between your thumb and finger to 'stop' it up near the nut. Pluck the string and you should hear a sort of pitched 'thunk'. As you shift the pinch point up and down it will become louder or softer, and the point where it is loudest is the 'air' resonant pitch.

A 'sleeve' in the hole (or 'tornavoz' in the Classical world) will lower the pitch and might not affect the output as much. Cut a strip of card stock about an inch wide and bend into a circle that will just slip into the hole. Tape in in place with the edge level with the top and see what happens. Cutting it down in height will reduce the effect, both in terms of the lowered pitch, an reduced power. I've made these out of three layers of .5mm veneer glued around a slightly tapered plug. They can look like you meant them, and work well.

The big advantage of shaving back braces is that when it works it tends to increase the power of the lower notes, rather than reducing them.
Reply With Quote
  #24  
Old 03-27-2024, 11:48 AM
Jimi2 Jimi2 is offline
Charter Member
 
Join Date: Dec 2017
Posts: 1,228
Default

Quote:
Originally Posted by JCook1 View Post
You can buy wooden sound hole inserts online. Here's one site that has them, some at fairly reasonable prices.

Jack

http://lutehole.com/
Thanks. They customize their inserts, which is helpful, as my fretboard protrudes a bit over the sound hole.
Reply With Quote
  #25  
Old 03-27-2024, 12:24 PM
warfrat73's Avatar
warfrat73 warfrat73 is offline
Charter Member
 
Join Date: May 2010
Location: Syracuse
Posts: 3,956
Default

Quote:
Originally Posted by Jimi2 View Post
Thanks, that might be worth a try.
Do you think one of these might also work? Doesn’t block the sound hole, but maybe it would change the resonance?
https://www.sweetwater.com/c1247--Mi...E&gclsrc=aw.ds
I have no idea... pretty much everything that I know about this I learned from reading Alan's posts over the years. But, based on his previous post it might...
__________________
"What have I learned but the proper use for several tools" -Gary Snyder

Bourgeois DR-A / Bowerman "Working Man's" OM / Martin Custom D-18 (adi & flame) / Martin OM-21 / Northwood M70 MJ / 1970s Sigma DR-7 / Eastman E6D / Flatiron Signature A5 / Silverangel Econo A
(Call me Dan)
Reply With Quote
  #26  
Old 03-27-2024, 12:58 PM
Jimi2 Jimi2 is offline
Charter Member
 
Join Date: Dec 2017
Posts: 1,228
Default

Quote:
Originally Posted by warfrat73 View Post
I have no idea... pretty much everything that I know about this I learned from reading Alan's posts over the years. But, based on his previous post it might...
Hmm. I wonder if it functions like a “sleeve” that he mentioned.
Reply With Quote
  #27  
Old 03-27-2024, 01:05 PM
warfrat73's Avatar
warfrat73 warfrat73 is offline
Charter Member
 
Join Date: May 2010
Location: Syracuse
Posts: 3,956
Default

Quote:
Originally Posted by Jimi2 View Post
Hmm. I wonder if it functions like a “sleeve” that he mentioned.
That was what I was thinking.
__________________
"What have I learned but the proper use for several tools" -Gary Snyder

Bourgeois DR-A / Bowerman "Working Man's" OM / Martin Custom D-18 (adi & flame) / Martin OM-21 / Northwood M70 MJ / 1970s Sigma DR-7 / Eastman E6D / Flatiron Signature A5 / Silverangel Econo A
(Call me Dan)
Reply With Quote
  #28  
Old 03-27-2024, 02:15 PM
davenumber2 davenumber2 is offline
Charter Member
 
Join Date: May 2009
Posts: 2,293
Default

I had a similar issue with a Tacoma parlor on the open A string. Very thuddy, didn't ring out well. I double taped a piece of black cardstock inside the soundhole. You can see it in the attached pic. It fixed the problem and is barely noticeable.
Later on, I removed it and the issue had noticeably improved so I don't think these things are necessarily permanent.
Attached Images
File Type: jpg Tacoma2.jpg (30.8 KB, 68 views)
File Type: jpg Tacoma1.jpg (80.5 KB, 67 views)
Reply With Quote
  #29  
Old 03-28-2024, 04:11 PM
Jimi2 Jimi2 is offline
Charter Member
 
Join Date: Dec 2017
Posts: 1,228
Default

Well I just got the Daddario O port and installed it:

https://www.amazon.com/Planet-Waves-...s%2C101&sr=8-1

It’s pretty unobtrusive and now the “thud” is gone. I don’t think it affects the tone too much otherwise, but which is good, but I didn’t really do an A/B test on that. Just happy to have the sustain back on that G.
Reply With Quote
  #30  
Old 03-28-2024, 04:21 PM
PointlessPicks PointlessPicks is offline
Charter Member
 
Join Date: May 2021
Posts: 18
Default G Dud note

It could also be a very bad fit of such a large diameter string to the nut. Please check it's sound after applying a capo an any fret.

Cheers, Doug
Reply With Quote
Reply

  The Acoustic Guitar Forum > General Acoustic Guitar and Amplification Discussion > General Acoustic Guitar Discussion






All times are GMT -6. The time now is 06:01 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright ©2000 - 2022, The Acoustic Guitar Forum
vB Ad Management by =RedTyger=