Thanks again for the replies...
Looks like we all have some sort of drone with the Meisterschaft... So will re install the N55 mids tomorrow morning..
Meanwhile... I will rubber line the hollowed out boot/trunk compartment tonight, to reduce drone.
I am using 3mm Everroll sound deadening flooring rubber.. We use this in our Spin/Cycle room, at out fitness centre to reduce accoustic booming from the sound system..
Fingers crossed..
