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Old 06-27-2007, 02:13 PM   #1
oompa
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That low B intonation problem

yea. i really need some tips. and sorry for the bad english, i dont know the terms, googling i found some charts or something but i couldnt tell what was what so.. well

got a 7620, neck as straight as a ruler, and i use a gauge 059 low B string.
but even with that saddle part (lockbox part) as far back as possible, the B string is still a tad sharp, noticable in a chord on about 4th fret and up, being really apparent on say 8th fret and forward.

i dont know what to do. the saddle part thingy wont go further back, cus with the fine adjuster screws up unscrewed the metal rod sticking out under the bridge hits the wood. with the screws all the way down that metal rod is so bent it gives me a mm or two of space to the wood, but then the the lockbox screw up on top (?) hits the saddle instead, since the lockbox thingy is so pushed down.

i would guess i need about 2 mm or so more to get it intonated. its driving me crazy. am i supposed to bite the sour apple and play with it slightly downtuned, so as to sound "ok" on the first five frets and crap the rest?
i think im too much of a sound perfectionist to live with that

i saw some picture once (i think it was on this forum, or an extern link) of some metal piece/part mod stuck into the lockbox or something for the b-string, giving it extended range? or maybe i missunderstood it.

anyway, does anyone have any tips? or do many people have this problem? i dont know why i do, the neck is idd straight and 059 gauge isnt weird?

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Old 06-27-2007, 03:46 PM   #2
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The truss rod effects intonation ever so slightly. The neck should not be straight (if you are referring to it being parrellel with the body). Take it to a luthier/tech. It might be something with the guitar itself (maybe bad nut, bridge heighth, truss rod slack or lack thereof). Most guitars will handle 5-6 semitones down without running out of room for intonation on a properly setup guitar.
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Old 06-27-2007, 04:04 PM   #3
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loosen the truss rod a quarter turn or so to add just a little relief. That should help, or try a .56 or .58 gauge.
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Old 06-28-2007, 04:13 AM   #4
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I was have the same problems but I bring my guitars to guitar master (luthier) he was work with thrus rod and do saw jobs with nut. And now my Squier 7 plays amazing

Sorry for my english
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Old 06-28-2007, 05:18 AM   #5
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Here's some thoughts in no particular order -


More neck relief is likely to make the problem worse.

A 7620 should have plenty of intonation adjustment for a 59 tuned to B.

If the nut is too high it will be contributing to the problem.

Ensure the string is thoroughly stretched - stretch it, tune it, etc. repeat until it no longer goes flat when you try to stretch it.

Push down on the string at the saddle to ensure it's not going to 'settle' further. Same at the nut. This tends to help with the bigger strings.

What brand string is it? It could be simply a bum string.

You may find a heavier gauge intonates better for you.
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Old 06-28-2007, 05:31 AM   #6
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Also, try moving it close to the neck and start moving it back. when i had my 007 Blackjack, i first thought i didnt have enough room. So i said "Fuck it!" And moved the saddle all the way towards the neck and started pulling it back. The saddle was actually way too far back to begin with! I think once you get past a certain point of sharp, it starts reading as flat (Scale length change?). Its worth a shot.


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Old 06-28-2007, 07:40 AM   #7
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LISTEN TO ME!!!!!!!!

I had EXACTLY the same problem! .059 gauge strings DO NOT intonate! I now have a .065 bass string which intonates perfectly. I'll be getting a .068 soon.

Don't bother with either .058's or .059's...
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Old 06-28-2007, 08:35 AM   #8
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Try thinner strings. The .056 I use on my 7421 when I can intonates perfectly fine. I have to get 10-59 sets locally, though, and anything at or above .059 doesn't seem to want to intonate. I think thicker strings at a given tuning seem to generally require a little more room for intonation, but if Zero Signal is right, you could probably try thicker strings (though .056, or even .052 should be perfectly fine for B on a 7620).

Oh yeah, also, the neck should be just ever so slightly bowed, not quite perfectly straight.

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Old 06-28-2007, 08:54 AM   #9
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Too bowed and you get buzzes on the high frets...

I talked to a guitar shop owning friend of mine a while ago on the subject of strings and he says whenever he has a problem like that he brings the intonator thingy forward and then works back from there and sometimes that works. try it...
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Old 06-28-2007, 10:44 AM   #10
oompa
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Quote:
Originally Posted by dpm View Post
Here's some thoughts in no particular order -


More neck relief is likely to make the problem worse.

A 7620 should have plenty of intonation adjustment for a 59 tuned to B.

If the nut is too high it will be contributing to the problem.

Ensure the string is thoroughly stretched - stretch it, tune it, etc. repeat until it no longer goes flat when you try to stretch it.

Push down on the string at the saddle to ensure it's not going to 'settle' further. Same at the nut. This tends to help with the bigger strings.

What brand string is it? It could be simply a bum string.

You may find a heavier gauge intonates better for you.
edit: uber-remove all i wrote. these tips worked wonders man!
i kinda.. did a scramble. i removed one of the thin shims, tightened the trussrod just like.. 1/16th or less maybe, and pushed the sh1t out of the string at the lockbox. now it intonates like an angel! i dont know wich one of those things that gave most effect, but now it intonates like an angel =D i even got me like.. 5mm of spare length at the saddle!

i did get slighly more buzz but its managable.
anyways, some rep for good advices! =)
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