Sound of Zu Soul Superfly vs Zu Druid Speakers

While not hearing the souls I have updated my Druids with Soul drivers and hi pass, also adding griewe loading and internal damping. The only difference is a slight volume decrease compared to soul now.

My Druids were mk4/08 and there is a difference.

Druids were warmer before.......... now they have better bass and attack. The Mundorf hi pass provides clean detailed treble but is still smooth which is nicer than the old Kimber based hi pass.

Sean suggested to add a foam wedge with a 3/8" gap all around the base of the Druid. I stuck the wedge to the mesh that covers the hole in the base. The wedge should be tapered on all sides to a point in the middle of the speaker level with the center of the tweeter. Zu use a closed cell foam but I chose an open cell melamine foam so not to affect the cabinet volume. He also said to glue a 1" dowel between the FRD and tweeter and the back of the speaker box. The internal damping I used is the same as Zu use on the Superfly, it's a waterbased damping paint, I applied 2 coats, about 1/8" thick. Simple tweaks but a bit ddly, especially cutting the foam.

As I used the new HO FRD from the Superflys I had to add a 10 ohm Duelund resistor insted of the 12ohm of the Druid.

Hope this helps