Mounting a 166mm diameter speaker, in this case an Aurum Cantus AC-165, in the plastic AliExpress adapters requires the mounting screws to be driven in at an angle. This was from a set obtained from Bruce Miranda - he had done it perfectly, as you would expect. The bottom of the screws did not break through, and the woofer flange was perfectly aligned. Note that the Aurum Cantus and the ScanSpeak 18W shown earlier use very strong cast aluminium baskets and flanges. The Dayton does not and this t
