I would go Match PP-62DSP especially if you can get the PP (plug & play) harness for your vehicle. You might be surprised what the factory speakers sound like with some eq, time alignment, & some watts behind them. Plus it's a great foundation if you decide to go "down the rabbit hole"!

 

Thanks for your help DaveG!

That was exactly what one of the shops told me. That the stock speakers with some eq and power would perform very well (option A)

However the other one told me that I if would get the same extra power but on a good pair of speakers instead (without the DSP eq), the sound quality would be better (option B).

I agree on you on the foundation (unfortunatly I am unable to invest more money in this )

My question is if a good pair of speakers+new_amp without eq is worst than the stock speakers with eq (and if anyone has already done an A-B testing between this two options).

 

I would take a decent set of speakers and a DSP over a better set of speakers and no DSP 100% of the time.

 

Thank you gijoe!

Do you consider the Mercedes basic stock speakers a "decent set of speakers"? 😀

Because, due to budget limitations, I can only go to stock+dsp_amp VS better_speakers+new_amp (without dsp).

 

I wish I could help you with that question, but I've never heard them, nor have I gotten to see the actual drivers. I would keep them and add a DSP, but in order to optimize the system you'll really want a measurement mic, and RTA software like REW. Trying to adjust a DSP blindly may take you a step backward, unless you are really willing to spend the time tinkering with it over the course of your lease.

 

I have done this a few different times... most recently in a BMW wagon. The Match amp with DSP can make even bad speakers sound pretty good. Most stock speakers are not as bad as most people make them out to be here in 2020. The problem is always EQ, power and TA.

I don't know about the MB GLB, but on my BMW, Audiotech Fischer (Match) made a tune for my car right out of the box with stock speakers and my touring body style. It's a million times better than the stock DSP in my car, and was probably the biggest single upgrade I made in that car. The tune that are made by A/F is a great starting point if you have never tuned before and they have stock tunes for tons of cars. If you want to go down the rabbit hole, the PP 62DSP also has 2 channel DSP out so that you can hook up a sub amp down the line if you want.

Most people jump right into upgrading the speakers, in my mind that should be done after you get decent power and adjustability to your system. Even stock systems can sound good if you have the adjustability.