Retrofitting from standard audio (no subwoofer) to HK

[TweakeNL]

Hi 
You probably don't have the roof speakers and the smal speakers in the rear door.

Just switching the speakers do a lot, you dont need to change the amp for it to work, audio will be much better

But the audio will be a lot better when changing the amp.

Just take a look at my V60 post. Should be almost the same. But for the 90 series, extra speakers in de rear doors.

https://forums.spaycetech.com/showthread.php?tid=24