I have bought a 12 string electric guitar. One thing that is puzzling me is the intonation. On a 12 string the intonation challenge at the bridge is because some strings are wound while others are plain and apart from the top E and B strings (which are unisons and this identical) the others are octaves and so one string is larger and the other smaller.
Image 1 - see my next post, below.
I set the intonation as close to correct as I can. My biggest issue is the low E. The picture above shows the low E saddle set so that the octave E is correctly intonated. It is the only wound string among the octaves.
Image 2 - see my next post, below.
This photo is of the same bridge except that now the saddle for the low E is set so that the lower string is correctly intonated. Look how much further back this is the the saddle position in the 1st photo - that's 10 complete turns of the saddle adjustment screw! The 5th, 4th and 3rd strings have slight intonation discrepancies but the 6th is the one that needs sorting.
Image 3 - see my next post, below.
Just for comparison, here is my Faith acoustic 12 string's bridge. It also has only one wound string among the octaves, the low E, but the intonation on this guitar is beautifully perfect; at least as perfect as tempered tuning will allow.
I am wondering what to do. A new set of strings will be the first job. If the problem persists I wonder whether I could get someone to weld a small piece of metal in front of the octave 6th string's saddle so that the saddle assembly can be back where the low string needs to be and the piece of metal will effectively push the higher string's saddle forward. I don't really want to play an 11 string guitar. What would you suggest?