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Topic: Low B not intonating on U12 |
Les Cargill
From:
Oklahoma City, Ok, USA
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Posted 3 Aug 2014 4:09 pm |
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No kidding - I have an 0.068 that's about a quarter-tone sharp when barred at the 12 fret.
I doubt there is anything to be done but replace it, but just curious of anyone's ever seen anything like this.
How is this even possible? I guess 1/2 is no longer
equal to 1/2. |
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Paul Sutherland
From:
Placerville, California
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Posted 3 Aug 2014 4:24 pm
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On a regular guitar that has an adjustable bridge (like a Gibson tune-0-matic) the lower strings are always set longer so they intonate up the neck. A 68 is a much heavier string than normally used on a regular guitar, so I believe it would need to be set even longer than is normally done on a regular guitar.
It does not surprise me that a 68 on a PSG would intonate sharp at the 12th fret. Since PSG's don't have adjustable bridges we have to adjust with the tone bar, or avoid playing such a heavy string in the upper registers.
_________________
It don't mean a thing if it ain't got that swing.
Last edited by Paul Sutherland on 3 Aug 2014 6:52 pm; edited 1 time in total |
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Tom Gorr
From:
Three Hills, Alberta
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Posted 3 Aug 2014 5:48 pm
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| Change the string, maybe it's seriously out of spec. |
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John De Maille
From:
On a Mountain in Upstate Halcottsville, N.Y.
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Posted 3 Aug 2014 5:49 pm
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| You might be pressing down too hard on the bar, which,will affect the intonation on any fret with that thick of a string. I find that to be true with my U-12 ZumSteel. Light pressure works the best. Does it harmonic correctly at the 12th? If so, it's probably the pressure you're exerting. |
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Dwight Lewis
From:
Huntsville, Alabama
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Posted 4 Aug 2014 4:04 am Intonation
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John, I find that to be true also. Since I play my low B so much I switched to a .072 string with much better results . Also my low B is only raised to C# the rest are lowers changes so it works for me. I still have to watch the pressure but not nearly as much now.
Dwight
_________________
Dekley 7p4k(PRS-10C), BMI S12 5p5kn
Last edited by Dwight Lewis on 4 Aug 2014 10:53 am; edited 1 time in total |
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Dwight Lewis
From:
Huntsville, Alabama
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Posted 4 Aug 2014 4:04 am Intonation
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DOuble post
_________________
Dekley 7p4k(PRS-10C), BMI S12 5p5kn
Last edited by Dwight Lewis on 4 Aug 2014 10:51 am; edited 1 time in total |
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Ian Rae
From:
Redditch, England
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Posted 4 Aug 2014 6:38 am
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Speaking as an ex bass player, adjustable bridge and all, big fat strings just don't sound good up there.
IMHO.
_________________
Make sleeping dogs tell the truth!
Homebuilt keyless U12 7x5, Excel keyless U12 8x8, Williams keyless U12 7x8, Telonics rack and 15" cabs |
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Les Cargill
From:
Oklahoma City, Ok, USA
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Posted 4 Aug 2014 6:01 pm
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John DeMaille - yep. that nearly has to be it. The 12 fret harmonic is fine. I probably have something like "parallax" only with pressure - being newerish to the 12, the nut behind the wheel is the likely culprit.
Ian Rae: As a fellow long-time bass player, I'd have to agree. As the old saw goes, nothing good happens above the seventh fret anyway 
I appear to now have the ... opportunity to reevaluate bar pressure. |
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John De Maille
From:
On a Mountain in Upstate Halcottsville, N.Y.
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Posted 4 Aug 2014 6:29 pm
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Les, it's just another quirk of playing the steel. There are many that pop up along the way.
Some are easy to identify and correct, others not so. Good luck in your progress. |
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