Kia Drivers Are Making DIY Upgrades to Their EV6's Sound Systems
Briefly

Kia Drivers Are Making DIY Upgrades to Their EV6's Sound Systems
""I used to be very active in the Hyundai Tiburon forums," nex703 wrote. "I remembered that there was a very similar problem with the factory subwoofer with those cars and the fix was to simply reverse the positive and negative terminals. I wondered if the problem with these meridian subs was the same so I gave it a shot." The user's solution worked out. "I invite anyone considering doing a subwoofer upgrade to try this first," they wrote."
"The post goes into details on how to do this, along with a few updates - including a link to a short video detailing how to make the change. In an article on the DIY fix, Chase Bierenkoven at Autoblog went into more detail about how speakers being out of phase can result in certain frequencies being cancelled out - something that can have significant ramifications for, say, the way that bass sounds coming through a sound system."
A driver discovered reversing the positive and negative terminals on the Kia EV6 Meridian subwoofer corrected a phase issue and markedly improved bass and overall sound without aftermarket parts. The change addressed speakers being out of phase, which can cause certain frequencies to cancel out and reduce perceived bass. After the reversal, the driver reduced the bass slider from +8 to a lower setting because bass became stronger. Instructions and a short video explain how to swap terminals safely. The technique mirrors a known fix from similar Hyundai models and offers a low-cost first step before subwoofer upgrades.
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