Mounting Ellipticor drivers
Copyright 2024 © Troels Gravesen

Some thoughts on mounting Ellipticor drivers.

All Ellipticor drivers have a decor ring, covering screws and makeing a nice transition to surrounding panels. The rings are kept in place by neo magnets and to remove the ring, you wet your fingers and turn the ring until it loosens its grip, most easily when the driver is vertical.
Now, we all like to make nice routings for drivers, not leaving a gab between driver and front panel. If too tight, like having to press the decor ring in place, you simply won't be able to remove the decor ring again.
To avoid this we need some tolerance in mounting the drivers, like having a driver of 104.0 mm diameter, we do the rebate some 104.2-104.3 mm diameter. Next, when mounting the driver, we add strips of plastic or alu/cobber foil to keep the driver centered in the rebate, because tightening countersunk screws we may press the driver in one or the other direction and the decor ring will be squeesed towards the rim of the rebate. Not good. We need the decor ring to be able to rotate freely.  

As seen on images, add some foil around the driver when fastening the screws. This way you will leave some 0.1-0.2 mm space between decor ring and cabinet. Removing the decor ring by rotating until it slips the magnets and lift with another small neo magnet. The tweeter decor ring pops up by itself. The D84 doesn't.
When routing for the D24 and D84, make the rebate diameter +0.5 mm.

The screws for the tweeter need to be well countersunk to eliminate the decor ring to buzz at certain frequencies. I found some good torx 20, 4 x 20 mm screws at the local Bauhaus and for the tweeter I did some grinding to reduce the head size and to make sure the decor ring doesn't ride the edge of any screws and cause buzzing. This is important.

Left: Mounting a D84 middome.
For the D84 and larger drivers, I didn't need to grind the screws, only D2404 and D3404.

Left: Mounting an 18WE driver in Ellipticor-1824.