Is loosening the truss rod of a bass the correct thing to do after changing to a lighter string gauge?
I bought some new strings for my bass and was informed that 40 is what you find on most basses when they come out of the factory. I restrung my bass today and the stock strings are actually thicker than the 40s I bought. I'm guessing they're 45 gauge. Having been a guitar player I know that you may need to adjust the truss rod after a change of string gauge. Am I being correct assuming that the lighter strings exert less pull which leads to a more convex bow which in turn means that a loosening of the truss rod is in order?
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Chances are that you won't need to touch the truss rod. Assuming the pitch is the same as it was previously, the new strings are only 10% lighter, so the tension is down by that 10%. If the neck was fine before, it'll probably be fine now.If there is a difference then yes, the truss rod would be loosened, but only by maybe half a turn. The other thing to be aware of is the intonation which as a guitarist, you'll already be aware - the saddles may (or may not) need slight adjustment.And - you may be able to lower the action slightly more than it was with heavier strings.
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