I tune it all over the place in open tunings and lower standard. As far as I can tell, the big problem as the strings get looser is that the guitar gets more easily out of tune generally. If Rick F. were about he would also say something about changing your strings as you go lower, but I can't recall if he says get heavier strings or not to keep the tuning better. Also, existing guitar strings tend to go back towards the original tuning they were in for awhile. I assume that a good guitar is designed for peak performance in standard tuning, so mucking around with it can't give you the best performance out of your guitar (keep in mind I know zero about guitars technically). It would be interesting, as you say, to find out what real experts think.



yours, Peter T.