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I bought this C300 a couple of months ago. Stock audio is trash. Upgraded the speakers and tweeters, as there weren't even any tweeters. I also got Aliexpress subwoofers for my footwell. I have the passenger side installed, and it sounds infinitely better. I went to wire up the other one on the driver's side, and there isn't a wire there to plug it in, nor a subwoofer, just a firewall cover where the speaker would go. Can anyone help me find solutions to this? Thank you!
you have to buy the sub and it will come with required wire needed to install. if you had a good experience with aliexpress seller just order from them, they probably have it. keep in mind the left and rights speakers fit different.
Yes, I have bought the sub and already installed it in the passenger footwell. It sounds good, but there was already a wire there to plug the new sub into. Unlike the driver's side, which I haven't installed because there isn't a wire, and the subs don't come with any wires.
Hello, I've upgraded the front speakers and tweeters to this, https://www.ebay.com/itm/277302286696 . Sounds way better, would recommend or if you want cheaper Aliexpress, but I've never tried those. Also thank you I just ordered the jumper cable!
Last edited by WyattH2009; Sep 23, 2025 at 08:15 PM.
Hello, I've upgraded the front speakers and tweeters to this, https://www.ebay.com/itm/277302286696 . Sounds way better, would recommend or if you want cheaper Aliexpress, but I've never tried those. Also thank you I just ordered the jumper cable!
Thanks for the link, you mentioned that you had to install your passenger side sub. My understanding is that even the base system has the passenger side subwoofer but not the driver side. Or did you just upgrade the passenger side?
I think this will go a long way in cutting out the lower frequencies from the tiny 4" door speakers, divert the lower frequencies to the footwell subs as well as add a trunk subwoofer output. It will also add more watts to the system overall.
Thanks for the link, you mentioned that you had to install your passenger side sub. My understanding is that even the base system has the passenger side subwoofer but not the driver side. Or did you just upgrade the passenger side?
I think this will go a long way in cutting out the lower frequencies from the tiny 4" door speakers, divert the lower frequencies to the footwell subs as well as add a trunk subwoofer output. It will also add more watts to the system overall.
Hello, hopefully this will help. I have the base system. Not Burmester. The passenger footwell does have a subwoofer. I've replaced it with the Aliexpress subwoofer, which I don't regret. The driver's footwell does not have a subwoofer or wires going to the spot a subwoofer should be in. Also, I'm looking for an amp next. Any cheaper alternatives?
I have the base system as well, this amp is the cheapest alternative I've found and is also plug and play. The other alternatives are brands like JL Audio, Audison etc. which are way more expensive. Being able to fine tune the frequencies will be alot more important than watts due to all the speakers in this car being very small. The aliexpress amp has digital DSP tune ability from an app.
I have the base system as well, this amp is the cheapest alternative I've found and is also plug and play. The other alternatives are brands like JL Audio, Audison etc. which are way more expensive. Being able to fine tune the frequencies will be alot more important than watts due to all the speakers in this car being very small. The aliexpress amp has digital DSP tune ability from an app.
Thanks, I don't plan to go any more expensive. I'm already 600 dollars in, and I'm mostly satisfied compared to what the base system was. I don't want to keep this car for long, but I couldn't pass up the deal my boss gave me.
yes,
I just found this on AliExpress: $17.56 | Car subwoofer speaker For Benz C W205 GLC X253 E W213 series high quality tweeter bass horn audio midrange loudspeaker refit https://a.aliexpress.com/_m05vG21
, sorry I just coppied and pasted in on phone right now I will send actual link later.
Can you send the links to the simple audio upgrade you did. like everything you did to upgrade the sound and the links
Yes, link if you have audio 20, which is the base audio, I'm pretty sure. Buy a jumper cable to jump from the passanger woofer to the drive woofer listed above i belive
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Subwoofer Upgrade
