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Weak sound from drivers side front tweeter/mid
I have a 2010 M3 with the enhanced premium sound. Lately, I have noticed poor performance from the driver side front tweeter and mid on the door panel. These speakers do produce sound, but they do not play as loud (or produce as high of frequencies) as my passenger side tweeter/mid. As a test, I put the fade all the way to the front and then changed the balance between left and right. The left (drivers side) tweeter/mid is noticeably weaker. I do believe I am due for a new battery, as I have gotten the increased battery discharge alarm recently. Could a weak battery be the cause of my audio issue. I know a weak battery has been known to cause strange issues on these M3’s. If not the battery, what else could be causing this audio issue?
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