View post (12th harmonic is off)

View thread

ChristopherSchlegel
Guitar Tricks Instructor
Joined: 08/09/05
Posts: 8,428
ChristopherSchlegel
Guitar Tricks Instructor
Joined: 08/09/05
Posts: 8,428
10/01/2009 12:52 am
Originally Posted by: hunter1801
....actually now that I check, every string is higher than its harmonic on the 12th fret

Oh and I have a Fender Strat

You definitely have intonation issues. It could be that you need to have the intonation set via the bridge saddles. BUT! It's also possible that the vibrato is causing problems.

Your 12th fret notes are sharp (higher than the 12th fret harmonic). This means that the string length from the bridge saddles to the 12th fret is too short. Moving the bridge saddles back the right amount will add the required string length.

However, it could instead (or also?) be the springs in the vibrato cavity are losing some of their tension. This happens over time (especially in the summer & with extra use). You might also have a heavier gauge of string on it than usual which would cause the springs to be pulled harder and the vibrato block to be pulled up a bit.

Check the claw plate in the vibrato cavity. Is it screwed all the way into the wood? How many springs are on it? 3? 4? 5? Is the vibrato plate sitting flush against the guitar body? Was it always?

If you are uncomfortable dealing with these things that is perfectly understandable, so you take it to someone that is competent in this area. But it's good to know all possible causes so you can judge the effectiveness of the person you choose to work on it.

Best of success with it.
Christopher Schlegel
Guitar Tricks Instructor

Christopher Schlegel Lesson Directory