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Where is the subwoofer? (2011 e350 Harmon Kardon Logic 7)

Old Jun 25, 2024 | 04:34 PM
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2010 S550, 2011 E350
Where is the subwoofer? (2011 e350 Harmon Kardon Logic 7)

I have a 2011 e350 with the logic surround system in it.

was just wondering where the subwoofer in this car is?

I think mine might be defective because I’ve noticed a difference in the bass and it sounds a lot less than it used to.

Thanks!
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Old Jun 25, 2024 | 04:40 PM
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W212 MY'14 M276-3.5NA @75kMi
dead woofer

Originally Posted by bst123
I have a 2011 e350 with the logic surround system in it.

was just wondering where the subwoofer in this car is?

I think mine might be defective because I’ve noticed a difference in the bass and it sounds a lot less than it used to.

Thanks!
open your trunk
look under the back shelf
what do you see ?

The sound system is super HI-FI with separate individual channels PER SPK... GREAT!
The flip side is it's a bit fragile and does not play high power too long.

The datasheet of the amp chips show them being well protected but the true reality is what you are facing: spk toasted by failed amp.


For everyone else don't burn your audio system with high-power output!!

Last edited by CaliBenzDriver; Jun 25, 2024 at 07:14 PM.
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Old Jun 25, 2024 | 04:44 PM
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2010 S550, 2011 E350
Originally Posted by CaliBenzDriver
open your trunk
look under the back shelf
what do you see ?

could you be a little more specific lol sorry
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Old Jun 25, 2024 | 07:16 PM
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W212 MY'14 M276-3.5NA @75kMi
Originally Posted by bst123
could you be a little more specific lol sorry

speaker sound bar


woofer power amplifier

Amp has optical fiber interface named "MOST"
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Old Jun 25, 2024 | 08:03 PM
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Subwoofer is prone to failure
especially if someone has been hammering the crap out of it with doof doof




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Old Jun 25, 2024 | 11:37 PM
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2016 E350 4Matic wagon, 2019 Ford Expedition, 2019 Chevy Bolt EV
fwiw, in a wagon, it is under the floor panel in the luggage area, next to the spare tire...


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