What sound system DO I actually have?

[Dark Vader]

I have/had a faulty MULF2 hi (completely corroded over but I just ordered a replacement one from eBay) and my BT and AUX don’t work (SOS malfunction light as well) but my radio (FM/AM/WB) still works fine… people have told me that is because I might have the ‘base’ stereo because the speakers are connected directly to the head unit… but my car has the A-pillar tweeters which are a sign of the 8-speaker ‘Hi-Fi’ system (no rear door speakers)… I haven’t check in the boot yet for an amplifier, but right now I’m just a little confused… if anyone can lend some insight It’d be greatly appreciated


I was under the assumption that if my MULF2 is down, and I have an amplifier attached to the MOST system, my radio shouldn’t be playing at all or at the most, it should be playing intermittently because the AMP wouldn’t be seeing a signal… hence the reason I’ve been told I have the base system… but the base system forgoes the A-pillar tweeters (or so I thought)

thx

2010 E60 535i… MASK (6.5” screen)

[richardodn]

It's highly unlikely you have the base system unless it's a gray market import. BMWs come with 3 different sound systems; base, hifi, and top hifi. All cars in the US market are either hifi or top hifi. To find out for sure how yours came from the factory, input your VIN in a decoder service like https://www.mdecoder.com/ You'll be looking at stereo and media option codes in the 6xx range.