mau108

Hey guys posted this in the audio technical information area but no traction wanted to see if you guys have any issues.

Picked up a 17 C43 with Burmeister sound system (garbage btw). But for some reason above 115km\h the bass cuts out completely. As soon as the speed drops below 115 it's back.

I also listen to an FM station and I noticed above 80km/h it cut out the bass today.

Wth is going on? I have the auto volume setting turned off.

303_AMG

Sounds like a warranty issue to me, maybe some kind of loose wiring?

And I'm interested to hear you say it's garbage. Reviews are very polarized, with car and driver saying it's one of the best on the market, and others saying it isn't very good. Personally I've owned Bose, Bang and Olufsen, Harmon Kardon, and now Burmester, and I find the Burmester to be quite nice (I'd say it's a bit better than Harmon Kardon and Bose, but not as nice as the Bang and Olufsen).

RichardCranium3

I know I'm but just leaving this here...
https://mbworld.org/forums/c-class-w...ster-myth.html

303_AMG

Interesting, I don't find them to be terrible by any means, but nor am I an audiophile that has ever (and probably never will) replace a stock sound system. I'd rather alter my engine/exhaust to sound better than my speakers . That being said those findings certainly are disappointing, I'm glad mine came in a package though and weren't a specific option I paid for.

Mr. J

Burmester is only an $850 add on. For the price it's definitely worth it. If it was a $3000 add on, I'd be pissed.

I think with the Burmester you get exactly what you paid for. Which is a decent factory system that performs adequately at typical listening volumes. As soon as you try to pump up the bass it's limits become obvious.

Mr. J

Is this with all sources or just FM radio?
If radio only, then some sort of signal interference is present.

sev7nflow

mine actually does this too... i have adaptive volume OFF yet it cuts out randomly in and out . wth is going on!

mau108

mine stopped doing this all of a sudden. Gotta keep an ear on things.

mau108

Argh it came back randomly. The speeds are random to but for sure the bass is cutting out and as soon as I drop below that speed what ever it decides to be the bass come back in.

So weird. I may do a factory reset and see what happens

mau108

so to update this post, dealership tried updating the software. Apparently road tested it and said it was fixed. It's not fixed so back to the dealership it goes.

I have a feeling its either the head unit or something to do with some sort of noise cancellation system (my acura tl had a active noise cancellation mics that needed to be disconnected when I installed an aftermarket sub).

gabe.m

It has nothing to do with speed... or it might... for me it happens when I listen at really high volume. Very low frequencies disappear and then reappear, probably every 30 seconds or so, to a minute.

This is not the first car sound system that does this, I assume it might be some kind of amplifier overheating protection kicking in (?!). I don't have an explanation, I just wish it didn't happen.

badboy2m

Hey are you still having issue with the bass cuts out, did you find a fix with your dealer, I'm having the same issue in the US

J**2

mau108

Yes I got it fixed. MB had to reflash the COMAND system.

Alfa4

Mine does this too. Only at certain speeds then the bass drops out. 2016 AMG GTS.