SL-Class (R230) 2003 -- 2012: Discussion on the SL500, SL550, SL600

SL/R230: center channel distortion, how to disable / remove?

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Old Mar 9, 2023 | 03:26 PM
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brownboy's Avatar
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2009 SL550
center channel distortion, how to disable / remove?

I heard what sounded like an electrical surge in the audio system and now the center speaker puts out a bunch of distortion. If I move the balance all the way to the left or right there's no distortion. How do I disable the center speaker? Is it hard to access it? (I have an '09). I saw this post in the R213 forum where it's pretty easy to access the speaker but I won't assume it's the same on R230s:

https://mbworld.org/forums/sl-class-...istortion.html

TIA
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Old Mar 14, 2023 | 08:26 AM
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2009 SL550
Does anyone have instructions or WIS for how to access the center speaker in the middle of dash near the clock? I don't want to start prying in random places.
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Old Mar 15, 2023 | 08:42 AM
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Center speaker?

I don’t believe that a R230 SL has a center speaker. Can you post a photo?
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Old Mar 15, 2023 | 11:21 AM
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2009 SL550
I don't have a photo handy but Harman Kardan sound system claims 5.1 capability and I listed to a DVD-Audio disc one time just for the heck of it though I guess it could be mixing down to not use a center channel.

BUT I hear sound coming from the upper dash that is distorted and when I moved the balancer all the way to the left or right (which seems to turn off the center speaker) I don't hear any distortion. If I was just fading between the left and right speakers I don't think the distortion would act this way.

I appreciate your response and hope someone can help.
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Old Mar 16, 2023 | 08:40 AM
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Aftermarket stereo?

I think the stock audio system is Bose.
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Old Mar 16, 2023 | 09:38 AM
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2009 SL550
My sound system is Harman Kardan which is shown on the speaker grills. I hate Bose and made sure not to buy an earlier SL that had that. It's also mentioned here on the MB site:

https://media.mbusa.com/releases/rel...dard-equipment

"10-Speaker harman/kardon LOGIC7 Surround Sound System with Dolby Digital 5.1"
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