In the early days of stereo, there were no rules or standards. Bass and Kick could be—and were—panned anywhere, The Beatles were a prime example notable for the fact that EMI and Capital did this differently to the same recordings. Centering both instruments became standardized during the 1970s.

There is a plug-in that can center those frequencies below a threshold, usually 80–120Hz, while panning the frequencies above. I own it and would post a link but am having trouble remembering the name.


BIAB 2025 Audiophile Mac
24Core/60CoreGPU M2 MacStudioUltra/8TB/192GB Sequoia, M1 MBAir, 2012 MBP
Digital Performer11, LogicPro, Finale27/Dorico/Encore/SmartScorePro64/Notion6 /Overture5