Mark Levinson 21-speaker audio sounds terrible on the GX 550 Luxury + (3 Viewers)

I had a minor breakthrough in my GX this week and thought I'd share. The way the ML system in my GS350 works, I keep the system bass setting several ticks below max (maybe 66%) and use the tone control in Poweramp on my phone to further boost low frequencies (in the app I keep bass at about 28%) - this combo delivers the rich sound I'm looking for. As I've said, with the GX ML system, it seems to lack bass handling capacity and distorts on seemingly benign tracks.

This week, out of frustration, I cranked the ML bass setting to 100% and significantly reduced the bass tone control on Poweramp and it was like I had a new system installed. Suddenly there was a substantial low end, the rear sub was engaged and the whole thing just came to life - without distortion. I'm very happy with it now, this was my only disappointment with our GX. It behaves almost exactly opposite of my GS, apparently.

That said, I still think it's a poorly executed system, but to go from what sounds like a single-speaker AM radio to an actual modern sound system is quite a leap. Clearly there's a separate issue with amp failure that I haven't experienced, but this was a game changer for me.

Also note, I still prefer surround sound off and right now I have balance & fade set to center.

GX550 ML Settings.png
 

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