String Tension

Brad Little

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First, Happy New Year to everybody.
Now, for the rest of the story. Last summer, I spent a couple months playing with a singer who had an Ibanez archtop, one of the Artcore series, I think. When I played my X-170, I noticed that there was a little out of tune-ness between the two as I went up the neck, didn't notice it when I played my F-50. So, I figured my bridge had gotten moved a bit. Then, we stopped playing and it slipped my mind until recently, when a thread on the Jazz Forum mentioned using the E-e method of intonation for an archtop. You detune strings 2 through 5 so that the bridge can be moved more easily, and intone the 1 and 6. The rest should then fall into place.
So, tonight, I put it on my workbench (our chest freezer covered in towels) and detuned. First thing I noticed was that the lesser tension on the neck caused the two 'e's' to go up a half step. Retuned to the e's, checked the tuning at the 12th fret harmonic and fretted with a Stroboclip and discovered they were spot on. As i retuned the rest of the strings, I had to keep moving the e's up (not surprisingly), and when I was done, all six were spot on.
I decided that it was the other guitar that needed intonation, but then why didn't I notice the discrepancy when I played my F-50? Maybe just because it was unamplified and not as noticeable, or some other reason? Anyhow, just a few thoughts from my now 3-4 beer new year's mind.
Time to play before too many more...
Brad
 

Ravon

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Thanks for the encouragment Brad. I tried the same thing after that same thread and ended up with a compromise. My biggest problem was getting the 6th string side of the bridge to stay put while moving the the 1st string side and vice versa. I'll try again sans all the household distractions :? . Happy New Year :) !
 

ArchtopAnimal

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I've recently changed from years and years of using 12-52 Chromes , to Thomastic Infeld 13-53,
TI have a much lighter B to A because the sets are arranged for similar tension on all strings
rather than the usual thickness jumps of other brands. The real problem is that the E and B
are way out compared with the others ( the low E is not noticable like a higher string is ... )
and need to be much longer to get intonation . On wooden / bone I've had to slant the bridge
to assist , and slightly compromise the GDA. They're much easier to play , and chords using the
middle stings ( eg E7+9 ) are waaaay less tension than I'm use to . Chromes are still the smoothest
strings on the Planet imho . I'm a convert . And a Happy New Year !
 
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