[Jukebox-list] Audio Question

I recently swapped out a defective Astatic cartridge with a Pfhansteil P51 on my personal 1015.

Since the swap the audio seems to have lost a lot of low end and sounds “tinny.”

Years ago when I restored it, I had added a Bill Bickers upgrade to the volume control box to improve the bass response.

Obviously I’d like it to sound like it did before the swap.