Guitar Set-up Advice?

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d1
d1
WA
304 posts
d1 d1
WA, 304 posts
7 Apr 2013 12:00pm
Does anyone know how to set up an electric guitar properly? I've been trying to do it myself, but just can't get the intonation right. So far, I've gone through the following steps:

* Tune all strings approximately, then correct neck relief to be 0.2mm at the 7th fret (capo on the first and 14th fret)
* Tune all strings approximately and set the bridge height so that string 1 clears 12th fret by 1.5mm, and string 6 clears same fret by 2mm.
* Tune all strings exactly and attempt to correct intonation by comparing second harmonic with the 12th fret pitch. This appears impossible for strings 5 and 6, because I've run out of adjustment range. The slider is at the longest possible position, but the fretted pitch is higher than the harmonic by about 5 Hz.

What could be wrong? The guitar is a new-ish Hagstrom Ultra Swede.
Ian K
Ian K
WA
4169 posts
WA, 4169 posts
7 Apr 2013 12:32pm
d1 said...

Does anyone know how to set up an electric guitar properly? I've been trying to do it myself, but just can't get the intonation right. So far, I've gone through the following steps:

* Tune all strings approximately, then correct neck relief to be 0.2mm at the 7th fret (capo on the first and 14th fret)
* Tune all strings approximately and set the bridge height so that string 1 clears 12th fret by 1.5mm, and string 6 clears same fret by 2mm.
* Tune all strings exactly and attempt to correct intonation by comparing second harmonic with the 12th fret pitch. This appears impossible for strings 5 and 6, because I've run out of adjustment range. The slider is at the longest possible position, but the fretted pitch is higher than the harmonic by about 5 Hz.

What could be wrong? The guitar is a new-ish Hagstrom Ultra Swede.



Action still too high or the bridge needs repositioning. Maybe the strings are heavier than intended?

choco
choco
SA
4186 posts
SA, 4186 posts
7 Apr 2013 2:33pm
Grab it by the neck and smash it into the ground it will be perfectly tuned for .00001 of a second seems to have worked for a lot of bands in the past

did you try googling/youtube?
Gestalt
Gestalt
QLD
14965 posts
QLD, 14965 posts
8 Apr 2013 2:49pm
best to find a good tech.

i've never been able to get anywhere near the results the tech my mates and i use for our guitars.

for $100-$150 it's well worth it.

not sure of who's the best in WA. there will be a couple of guys that most people go too. usually centred around a "real" rock orientated guitar shop that handles all of the local and touring bands.
Ian K
Ian K
WA
4169 posts
WA, 4169 posts
8 Apr 2013 1:31pm
Gestalt said...
best to find a good tech.

i've never been able to get anywhere near the results the tech my mates and i use for our guitars.

for $100-$150 it's well worth it.

not sure of who's the best in WA. there will be a couple of guys that most people go too. usually centred around a "real" rock orientated guitar shop that handles all of the local and touring bands.



You're probably right Gestalt, but this is DIY corner. For reference, I've got one here, about the same neck relief and action, the distance from nut to 12th fret is 325mm, from the 12th to the bridge on the low e string is 330mm. The E slider is cranked as long as it can go. I haven't got a good ear but with a $25 tuner it is green E open and green E at the 12th fret. Can you file or bend the slider to get a little more length?
d1
d1
WA
304 posts
d1 d1
WA, 304 posts
8 Apr 2013 2:58pm
Thanks for the feedback.

I agree that a good guitar tech would probably fix it, but I don't know a good one, and the teens I see in the local shops here don't inspire much confidence. The "real rock" shop in WA would probably be Kosmic, but my wife has banned me from going there (too much expensive temptation).

In the meantime, I'll try with different gauge strings (cheapest path), then tech, and if all this fails, might have to use it as wall art, or follow choco's advice.

Ian K: the slider would need to be extended quite a bit. It almost looks to me as if the whole bridge has been mounted in the wrong place, too near to the neck, because all sliders are on the long end off middle. BTW, it would be interesting to know the width of the "green" range on a tuner. I think "acceptably tuned" used to mean fundamental +- 1/3 semitone (33 cents). If this is indeed the case, then the error bars of lower E would be (pitch standard)440*2^(-17/12) = 164.81 Hz fundamental, 440*2^(-17.3/12) = 162 Hz lowest acceptable value. So yes, 5 Hz is too much deviation.

Ian K
Ian K
WA
4169 posts
WA, 4169 posts
8 Apr 2013 3:33pm
Misplaced my scientific calculator so can't check the twelfth root of 2 calculations for a semi-tone, but that looks about right. At either end of the scale on my tuner is +50 and -50 so it now makes sense that that is the fraction of a semi tone from the central tuned position. So by your calculations the semi-tone from low E is 2.8 X 3 = 8.4 hz. Then the green arrow resolution, relative to 50% FSD looks to be about 5% on my cheap tuner, 5% of 8.4 is less than a Hz. If you fret the 12 th fret moderately awkwardly, a bit of lateral tension, the E goes sharp by about 20% of semitone. If you fret at the twelfth with full finger strength, really get that string down, but not bending sideways, between the frets 11 and 12 you can almost get to 50% of a semi tone. So set your intonation with the the light fretting at the 12th fret that you hope to play with.

The high E string, for comparison, on the guitar I'm looking at, has the slider as far forward as is possible. Ie slider for high E fully forward, slider for low E fully back, so the bridge needs to be accurately placed to cover the full range.
KazeRonin
KazeRonin
WA
11 posts
WA, 11 posts
17 Apr 2013 10:19pm
Hi - I found this series of lessons by a guitar tech pretty good - I've set my guitar up quite succesfully. I would have thought it necessary to have guitar in tune(and not approx.) when setting neck relief - as that would throw out relief when properly tuned. Secondly - did you slacken strings to adjust intonation - as one of my books suggests might be necessary on tune-o-matic style bridge that that ultraswede seems to have. My 20 cents worth!
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