Hi all,
I had an amazing experience last night but let me begin at the beginning.
I retired my old bass, which I made in 1993 as it was getting a bit tired and needed a refinish and re-fret and have been using a bass that I got together to tide me over. It was fitted with a PJ set of EMGs powered by 9Vs. It played fine but I struggled to get a great sound, it was OK but not great.
I finally finished renovating the old bass, which has a pair of Jazz EMGs powered again by 9Vs and used it again for the first time on Saturday. The difference was astounding.
The old jazz pickups had so much output compared to the much newer PJ set, I'd guess at 4 x the output and the tone was immense. More highs and lows, more definition and more of everything. I was more than happy, my sound was back. I should mention that I'd changed my amp along the was so the change in sound was even more astonishing.
The Jazz set was bought in 1993 and they were used as well so probably made a lot earlier than that. The PJ set were bought about 5 or 6 years ago. I don't know whether the pre 1993 pickups were designed to run on 9V or not but they sound fantastic at that voltage so I'm not going to do anything that might destroy them, so at 9v they will stay. If I can find room under the scratch plate of the other bass I might try 18v and see if the PJ set come as alive as the others. If I do I'll let you know.