Recently acquired an Old Warwick with EMG pickups, one J and one P type.
Whilst i am having no issues with the J, the P pickup is producing some distortion. If i have the pickup at a normal proximity away from the strings, EQ on the bass flat, when initially attacking any note on the bottom two string (E and A) hard, there is a distortion, less than half a second or so but very much there. Looking online, this is typical of the preamp in the bass being overloaded, or the battery being low. Given the EQ is flat i cannot see how it can be the former, and i have tried numerous fresh batteries with the same results. Also tried with two different sets of strings and ruled out my Amp being overloaded. Screwing the pickup right down almost as far as it will go removes the distortion, but obviously a lower output comes with it which i don't really want. All original electronics as installed in 1988 so should all be compatible with one another so i doubt pot values are a problem.
Anyone any thoughts? I vaguely remember having a similar problem with an EMG P type pickup in a bass i owned many years ago, and not sure the problem ever really resolved itself.