Tags: intonation
Permalink Reply by John Bjorkman on March 12, 2009 at 11:58am
Permalink Reply by Robert on March 12, 2009 at 12:19pm Hey Bob,
On #1, if you're talking about staying in tune as you capo up, that could be a function of how tight the capo is, and stuff you probably already know about.
If you mean that fretting the strings doesn't result in an in-tune note, that could be fret placement combined with action. That is, the frets may be properly placed for a particular action height, but if you vary from that, the geometry could throw off the exactness of the note. It is probably just most noticeable on the A's. Check out the Buzz Feiten page to see if this seems like your problem.
OTOH, if you mean that you tune the A and it's fine when you play a D chord, but *sounds* a bit off when you play an E, then you might also be experiencing the basic effect of having a "well- tempered" instrument. See this Wiki article for a detailed explanation. Basically, notes are not in perfect mathematical intervals - at least to *sound* right to our ears. But to make an instrumental capable of playing all notes, they invented "well tempered" as a really close approximation to something where most notes sound OK.
So, you might have a combination of all those with your instrument. If all else fails, tune it down, call it "jangly" and, like Pee Wee Herman, just say, "I meant to do that."
;-D
On #2 - yep, the plain steel strings get no benefit from coating, coating is just on the wound strings. All I can suggest is wiping down your strings thoroughly after each use. The B's are thicker than the E's and can hold more corrosion on them. When you wipe down, use a thin cloth and slip it under the strings to be sure you get the under side. You might also keep spare strings of just the ones going dull first, rather than replacing a whole set.
On #3, I can only guess that your particular instrument has a "dead" spot on that particular note. Try hitting the same note on the B strings - if you get the same deadness, that's just a tough break: it's the physics behind the instrument's bracing, etc. A good luthier may be able to remedy the situation with some tweaking. (You might also try tuning down, capo 2, and thus shift the note to the 14th fret. If you get the same result, it's definitely the physics. If it sounds clear, it could be the reduced tension, etc. may have sufficiently modified the physics to avert the problem. - In any case, I am just guessing. Again, an experienced luthier should still be able to help you.)
Permalink Reply by ROB ENGLISH on March 12, 2009 at 12:34pm
Permalink Reply by Robert on March 12, 2009 at 1:03pm Hello, I couldnt help but notice your discussion, I played a 60s D12 35 slot head Martin check out the photos on my AGcommunity page It had a very special set of non factory tuners made by a german who pretty much machined them by hand they were engraved with some scrollwork pattern Martin tells me they ran out of tuners in the sixties for the slot head 12 and special ordered them from a custom machine shop outsource! when I came back from Japan somehow customs lost the D string gear which I have found impossible to replace it was always loose anyway I often ran into the same tuning aberation however the more I played it the less problems I had also you may try changing the string setup you can put the octave strings on top or on the bottom and you know letting it jangle may be ok I love the sound of a 12 and just recently I aqquired a Luna muse 12 and it aint bad hang in there and keep messing with it if it works for you it is right there is no right or wrong way of doing it as long as you get the results you need I will be glad to discuss details with anyone in this group and I think we are in for a neo 12 string renisance jangle on Rob Englishs
Permalink Reply by Edward Sparks on March 12, 2009 at 5:53pm
Permalink Reply by ROB ENGLISH on March 12, 2009 at 6:11pm
Permalink Reply by John Bjorkman on March 12, 2009 at 9:43pm On #3 - try tuning down and just doing your 12th fret note. The change in physics might make it sound clearly, and if you stretch to the 14th fret (13th if you tuned down 1/2 step), you might get the dead spot. If that works, you might just have the easy solution of playing tuned down a speck.John,
Thanks for all the input. In the case of problem 1, no, it doesn't seem to have anything to do with a capo. I rarely capo, as I like to have access to all the frets.
In the case of problem 3, can't reach the 14th fret with the top three notes of an F position -- it's a 12 fret neck.
Bob
Permalink Reply by Robert on March 21, 2009 at 2:52pm
Permalink Reply by Robert on March 21, 2009 at 3:57pm I don't know from your description, which was really inclusive...but if this instrument is under martin warrenty, meaning taht you are the original owner, you should be able to send it back to them with a list of problems and they should be able to fix it! And I think it will be free...even if it is not still under warrenty, a '68 Martin anything should be well worth the cost of the repair! We have had bad luck with the martin Cert. reapir people in our area...I would send, ot take it back to Martin. That's just my 2 cetns! I do wish you the best of luck! Edward
Permalink Reply by Robert on March 21, 2009 at 4:01pm Robert said:On #3 - try tuning down and just doing your 12th fret note. The change in physics might make it sound clearly, and if you stretch to the 14th fret (13th if you tuned down 1/2 step), you might get the dead spot. If that works, you might just have the easy solution of playing tuned down a speck.John,
Thanks for all the input. In the case of problem 1, no, it doesn't seem to have anything to do with a capo. I rarely capo, as I like to have access to all the frets.
In the case of problem 3, can't reach the 14th fret with the top three notes of an F position -- it's a 12 fret neck.
Bob
BTW - if you're looking to replace the tuners, check out the Stew-Mac catalog: here's their page for a 12-string slot head replacement set. (or check out the other pages if you have other tuners)
Permalink Reply by John Wilson on March 21, 2009 at 5:32pm Check Out the Latest in Acoustic Guitar
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