[zenmaster]

Originally Posted by Nine Lives

If it's this thread you're on about then it doesn't address my question;that is taking the HK to the level as that found higher up in the BMW range ie full L7 functionality with OEM parts.

http://f87.bimmerpost.com/forums/sho....php?t=1251916

You're not going to be able to do it, because the HK system is designed to work holistically with the physical factory speaker setup. The higher-end setup, such as you'd see in the E90/F30, involved complicated tuning work which was never done for the 2 series configuration.