Kia EV6 Owners Improve Bass Quality Through Rewiring

TL;DR
Owners of the Kia EV6 are fixing a bass issue caused by an out-of-phase subwoofer in the Meridian sound system through a simple rewiring of the subwoofer's wire harness, which involves reversing the red and black wires to correct the phase and improve audio quality.
Want the full story? Read the original reporting
Read on Jalopnik