Eventually I figured it was because I was too lazy to spend time finding a good sounding bass. It starts with how does the bass sound. And you have to be very careful to ascertain exactly what you don't like. Then, figure out if the aspects you don't like are inherent in the wood. If the instrument is naturally dark and muted- it sounds like that unamplified, then buy another bass. PUPs only translate what the wood is doing to the strings, so don't expect miracles.
If the basic inherent sound of the bass is good, but just not translating quite right to the amp, and you've tried strings, setup, and technique, then research PUPs which address the specific sonic issues you identified.
I replaced the factory Duncan's on my Lakland 4-94 with Bart's because the Bass lines were a bit too aggressive for what the bass sounded like. But it didn't change the fundamental character.
And that's the point the "wood doesn't matter" folks miss. I managed a guitar store in the '80s, and put hundreds of pickups in instruments. They never changed the character. Bright twang ones were still twangy, just muffled. Those that were all attack and sustain never became warm and blossoming.
So, listen to your instrument closely, carefully consider exactly what you want, and move cautiously.
John
If the basic inherent sound of the bass is good, but just not translating quite right to the amp, and you've tried strings, setup, and technique, then research PUPs which address the specific sonic issues you identified.
I replaced the factory Duncan's on my Lakland 4-94 with Bart's because the Bass lines were a bit too aggressive for what the bass sounded like. But it didn't change the fundamental character.
And that's the point the "wood doesn't matter" folks miss. I managed a guitar store in the '80s, and put hundreds of pickups in instruments. They never changed the character. Bright twang ones were still twangy, just muffled. Those that were all attack and sustain never became warm and blossoming.
So, listen to your instrument closely, carefully consider exactly what you want, and move cautiously.
John