[320iG20]

Unfortunately my car only has the base sound system without tweeters (OS7/RAM).

I would like to retrofit those with the Harman/Kardon ones and maybe also use the center speakers from the G30/G11 as they share the same tweeter as the G20.

Does someone know, if these are interchangeable and plug & play?

Would the subwoofers work, too? Stock woofers are 4Ω/15w, Hifi 4Ω/25w. Does someone know the spec of the Harman/Kardon ones? And what power is the RAM able to deliver?

[ramparts]

They are all identical parts across the range so yes

[320iG20]

Originally Posted by ramparts

They are all identical parts across the range so yes

Thanks, also the plugs are the same?

I could just replace the base G20 mid-range speakers 65132622560 with the G30 mid-range 65139364956 and add the tweeters 65139362561?

[panki_86]

You will also need to change RAM from Basic to High and add Booster (ALEV3) for HK woofers.

RAM Modules
-Basic for Base audio
-Mid for HiFi
-High for HK or BW

Boosters
-Base audio is without it
-for HiFi I don't know
-HK have ALEV3
-BW have ALEV4

Also if you have DAB, you need to find RAM with DAB option (HIGH DAB).

And normally you will need to code your VIN number to the new RAM module and add S688 option (for HK) in VO. You will also need to recode HU-MGU unit to HK.
I don't know how is with used RAM modules, if you can get OTA for your car or not?

[320iG20]

Does the basic RAM not offer enough power for the HK woofers?

It should have a 6-channel analog output?

https://www.bimmer-tech.net/blog/ite...system-upgrade

Changing completely to HK would not make sense, as it is more expensive and sounds worse than a third party solution.

[panki_86]

Originally Posted by 320iG20

Does the basic RAM not offer enough power for the HK woofers?

It should have a 6-channel analog output?

https://www.bimmer-tech.net/blog/ite...system-upgrade

Changing completely to HK would not make sense, as it is more expensive and sounds worse than a third party solution.

I don't know, but HK woofers are not even connected to high RAM, they have separate amp called Booster.

[320iG20]

Ok, I also checked the plugs, Base has two pins, Hifi and HK only one per side at different positions. That won't work without custom cables/plugs. Not worth the effort.

And the stock woofer is tiny and only has 15w, Hifi 25w, HK is not specified. Third party woofers have 100+w.

[suchpro]

This link has a lot of info: https://www.audiokit.fi/kirjoitus/bm...-audio-upgrade