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I got a 2016 RC350 Fsport and my sound system sounds like crap, Not loud sounds low , I did setup the sound setting, but the only thing new was MID settings, I did bass and treble but didn't mess with MID, I didn't know what is was, that option wasn't in the 08' IS250.
the sounds feels like it's only coming from the center and not all around like my IS, is my speakers messed up???
Sound systems are very subjective in how they sound to different people. Also, your note is not clear. For example, we don't know what "Not loud sounds low" means. I will suggest that MID is probably the range of frequencies between bass and treble - you can consider it an abbreviation for "Middle."
Also, each Lexus dealership has a technical specialist who will be glad to step you through all the various settings, including those for the audio system, and he can help you much more while sitting in the car with you than we can from afar, and will surely be able to determine if "the sounds" are only coming from the center speaker, and you can ask him directly "is my speakers messed up???"