[bigxO]

Hey everyone, I’m planning to upgrade the Base sound system in my 2011 BMW 328i E90. I listen mostly to rap, so I want a setup with clean, crisp sound and a decent amount of bass, but nothing too overpowering. I want to hear the lyrics clearly, even at high volumes. I’m not looking for anything too complex—just something simple that works. I can handle the installation myself but need recommendations on what to get. I’m willing to spend on quality, but I’m not looking to go overboard. Any advice would be appreciated!

[ctuna]

Audio Tech Fisher DSP/Amp and speakers .
There are many threads on these here .

[bigxO]

you mind helping me choose what i need? don’t know much about stuff like this and would really appreciate the help

[bigxO]

also, do they deliver in the US? i see it’s a Germany website but wasn’t sure

[ctuna]

https://unexpectedcreations.com/mobile-audio/

These guys can kit you out right .
There are many threads on this stuff.

[Reverend_Wrong]

Since you're in the US, I assume base system means the Hi-Fi (tweeters in the front doors and BMW Professional on the head unit). The amp is the weakest link in the audio system so start by replacing that. The simplest plug & play solution is probably the Bimmer-Tech Alpha One Up8 (which I believe is a rebranded Helix Match 8) and includes a wiring harness and comes pre-tuned for your car.

If you decide on a different amp, get one with at least 6 channels and get the Technic wiring harness to make the installation much easier and completely reversible (I recommend the one that includes the power cables to the battery). I went this route about a month ago and installed an AudioControl D6.1200 mounted to a board in the original amp location. I am astounded by how much better the stock system sounds with a better amp and a basic tune of the DSP. Clarity and imaging have improved dramatically and there is a bit more presence to the bass. A Digital Signal Processor (DSP) can make a huge difference, but requires a lot of research and patience to learn to get it just right (or a few hundred dollars to have someone else tune it). However, just setting the gains, time alignment and crossovers was pretty simple and made a dramatic difference. If you don't want to take the time to learn and experiment with tuning, the Bimmer-Tech amp is probably the way to go since the DSP comes pre-tuned.

[bigxO]

I have the one with 2 mids in the front, woofers under the seat, and 2 mids in the rear. no amp and no tweeters. if you have any recommendations on what to get, i will gladly take it

[ctuna]

Both Bimmertech and Bav sound uses rebranded audiotec fisher amp
dsp's . The bav sound one is closed down you cannot tweak it .
The link I mentioned above is the distributor for Audiotec Fisher in the US .

There are multiple threads on people using these .
There are multiple threads on details of system description and how
to identify it.

I suggest you call up unexpected creations or get to rooting through the threads for details.

If you have to be hand fed you are probably not up to doing this stuff yourself.