At a guess - the head unit (I think this is around the centre console or transmission tunnel area) has the speaker connections.

No separate amp. Or it’s under the passenger seat.

 

Amp location varies by sound system package. My car has standard sound system so it doesn't have amp in the trunk. If your car has Advanced or Burmaster sound system, there should be an amp in the trunk.

 

Hi,

Audiotec Fischer has a couple of plug and play harness for our cars, supporting both the current non-Burmester sound system and Burmester sound system.

Audiotec Fischer

For the A W177 non-Burmester sound, you can refer to MATCH PP-PAC 80.

For the A W177 Burmester sound, you can refer to MATCH PP-MB 1.9MBUX-BUR

The above applies to the CLA C118 as well.

I came across them while researching to upgrade my current Burmester sound system because I too am not satisfied with it.

The plug and play harness would allow you to connect to their Match Up 10 DSP and it looks promising.

I am still in the midst of researching and comparing, but at least this one is a plug and play option which makes it highly attractive to me.

 

Hi,

Audiotec Fischer has a couple of plug and play harness for our cars, supporting both the current non-Burmester sound system and Burmester sound system.

Audiotec Fischer

For the A W177 non-Burmester sound, you can refer to MATCH PP-PAC 80.

For the A W177 Burmester sound, you can refer to MATCH PP-MB 1.9MBUX-BUR

The above applies to the CLA C118 as well.

I came across them while researching to upgrade my current Burmester sound system because I too am not satisfied with it.

The plug and play harness would allow you to connect to their Match Up 10 DSP and it looks promising.

I am still in the midst of researching and comparing, but at least this one is a plug and play option which makes it highly attractive to me.

Looks like that harness is a high level speaker to line level converter for their dsp amp.
I dont think there is a method to get digital or analogue signal directly from mbux.
If your going down this path have a look at minidsp harmony - probably the best dsp with dirac live. Audison also make good dsp units. With those you can plug the speaker level lines straight into the dsp.

I have 2 issues with my burmester system - not enough deep bass and I dislike the drone from the exhaust noise piped through the speakers. The bass issue is the subwoofer is too small, but I also dont want to lose boot space. Maybe aftermarket subs under rear seat may be an option?

 

The only limitation there is that the signal probably allready has a high pass filter and other dsp applied as its only going to the sub amp. Would probably have to test the signal first to see if worthwhile and what the output voltage/imedance is. May not be compatible with all amps, seen some really low output from stock systems.
Also realised the subs under ŕear seat is probably a bad idea as there are airbags under the seats on the sides. Picturing a bass line triggering an airbag!

 

Hi there

I have W177 with the Standard Sound System and I'm very unhappy with it's sound quality. According to the technical spec there is no external amplifier.

I want to add a subwoofer with an amplifier. So my question is where can I get audio source for the amp? I dont prefer use high level speaker outputs as audio source. Any other ideas?

Can I upgrade Standard Sound System amplifier?


Standard sound system:

• Max. Total power: 100 watts
• 6 speakers

Advanced Sound System (in UK Premium and Premium Plus):

• Max. Total output: 225 watts
• 9 speakers
• 1 subwoofer
• 1 external booster amplifier

Burmester Surround Sound System:

• Max. Total power: 590 watts
• 11 premium speakers
• 1 subwoofer
• 1 external Class-D amplifier
• Optimized sound
• Better-looking speaker grills

 

Poor quality audio is a common complaint with the W177. Been discussed many times on this forum.

for pointers please search plus refer to these previous threads:

Sound systems

Some more information on the differences between the three types of sound system in the W177: Standard sound system: - Max. Total power: 100 watts - 6 speakers Advanced Sound System (in UK Premium and Premium Plus): - Max. Total output: 225 watts - 9 speakers - 1 subwoofer - 1 external...

www.aclassclub.co.uk

Sound system

I’m currently awaiting delivery of an A200d AMG Line Premium, it’s listed as having “mid-range sound system” but I’ve never been able to confirm exactly what this is. Anybody able to shed light? My wife has Dynaudio upgrade in her Golf which sounds good, be nice to know how it will compare...

www.aclassclub.co.uk

Burmester Sound System

I am a sound engineer, getting my AMG A45S, thought Burmester would be a good purchase to upgrade. But, I am not that happy with my Burmester sound system, feels like too much "polished" and not enough thump and crispness. I mostly listen to rock and heavy metal. Worked on EQ a lot, not...

www.aclassclub.co.uk

Quality of the various sound systems?

Hey everyone, My dealer just informed me that in order to upgrade to the advanced sound system I would have to include the premium package which would add to the car a total additional cost of 1.300 EUR (around 1200 GBP) which comes with additional front heated seats, keyless go, the backseat...

www.aclassclub.co.uk

New car. Thoughts on the sound system.

As I posted in the Newbies forum, I just received my new A200d yesterday. It's only been one day. But, I have been listening to the audio system for a number of hours, while familiarizing myself with functions, locations, adjustments, etc. I have been both looking forward to it, and dreading it...

www.aclassclub.co.uk

Bad sound quality

I’ve recently had my gearbox and MBUX updated (FUP3). Now, the sound quality is absolutely terrible in the car, regardless if I listen to DAB+ or Bluetooth/Online music. I have the premium sound system (not BM) and it was excellent prior to the update on whichever version I had (car from...

www.aclassclub.co.uk

Not impressed with the "advanced sound system"

I've had a W177 sport premium for a few weeks now and while i haven't spent too much time playing with the sound system, i'm not impressed at all. I've come from a W176 Executive model so just a normal sound system and while it wasn't as powerful as this one, the sound quality was so much...

www.aclassclub.co.uk

Lacklustre burmester

Hey everyone, I’ve recently made the switch from an A200 premium which had Mercedes Advanced Sound System. I was always very impressed by the system and assumed the Burmester in my A35 would blow me away even more. However, I’ve found the Burmester to be very average. Not saying it’s bad but I...

www.aclassclub.co.uk

Added an Audison equipment to my A35 added video

here are so photos of the equipment I had fitted in my A35 parts fit are as follows Audison bit One Virtuoso hi-res signal processer + DRC MP REMOTE CONTROL Audison SR 4ch amplifier with crossovers Audison Prima10in subwoofer enclosure Hertz ml280.3 legend tweeters Hertz ml 1650.3 legend woofers...

www.aclassclub.co.uk

 

Even with the Burmester Surround Sound System, with the subwoofer, is uninspiring.

In my opinion, the last thread post above is the way to go, gives the richer sound that your after.

 

Thanks for reply.

I could not see any thread about upgrading Standard audio system. Advanced and Burmaster Sound System options have amplifier in the trunk so adding extra amplifier is easy.

But Standard Sound System doesn't have any specified amp, so where can I get audio source? There must be an amp for Standard Sound Sytem too, I would like to know location of the amp so I can wire to the external amp.

 

You can see trunk below, there is no amplifier for standard sound system.

Thanks.

 

Thank you sir.

Head Unit is located on the drivers side near the knee airbag. I took a video of it. I think this is the speaker connector of main unit, you can see the image below.

Can I find an adaptor cable that I can use between Head unit and amplifier?

 

Hi Adrian99, could you be so kind to share the video with us? I also want to upgrade my audio and i'm searching for the head unit.

 

Hi Dionvisser,

You can find the head unit above the odb port. Yo can see it from behind the brake pedal.If you want to ask something different, feel free to ask.

 

That is odd. I'm finding my way through the workshop manual and this states that it's in the trunk. Did you manage to make it work? Also I've got the A200 Hatchback. So it's possible the units can be in different places per model...

 

I see what you mean. Mine has the standard sound system too unfortunately. My dealer told me they won't upgrade the soundsystems anymore. Searching now for a suitable solution without compromising trunkspace.

 

Thank you for the info @Sixman. I am actually a complete noob when it comes to sound system so I am trying to read up as much as I can and ask around friends.

The subs under the rear seats sounds like a great idea! You don't get to lose any boot space and it is well hidden.

 

Pins 1, 10 and 2 of connector 2 in de diagram below connects to the subwoofer amplifier of the advanced sounds system. It looks like an audio connection. Perhaps we can connect our own amplifier to those pins?

I just can't seem to find the right harness or breakout-box for this connector, so I can rewire those pins and distribute it to the trunk.

 

Can we use eMost out for digital connection? There is a dac for Benz most connection link below. What do you think?

https://mobridge.us/mercedes-benz-most150-coax-pre-amps-now-available/

Also high level input another option.
Many dsps have high level input. You can use audiofisher’s integration cable for standard sound system. A dsp + amp can be used for powering all speakers.

 

I wouldn't have a problem with a lowpass filter already aplied. I'm just missing some deep, low end bass which I want to add with an amplifier and subwoofer.

The eMost solution looks interesting but is a bit pricey for my taste. It's just a PreAmp so you'll also need an amplifier with the necessary harness to your speakers, and probably an extra amplifier for the subwoofer.

 

Hi Guys

I have a 2022 A35.
it’s meant to have the upgraded stereo system but I find it very average.
it does have the bass speaker in the boot but sound is not as good as I hoped.
I took a Quick Look at the front door speaker which look a bit cheap.
does any one know the size of the speaker?
Anyone upgraded before?

cheers Gonz.

 

Hi Guys

I have a 2022 A35.
it’s meant to have the upgraded stereo system but I find it very average.
it does have the bass speaker in the boot but sound is not as good as I hoped.
I took a Quick Look at the front door speaker which look a bit cheap.
does any one know the size of the speaker?
Anyone upgraded before?

cheers Gonz.

Have a look through the linked threads in post #3