Why don't you call Sean? I am sure he'll give you lots of ideas for things to work on. In fact, I think he kind of likes it when owners do modding.
Congrats on your mods. Which x-over caps did you use? By double x-over caps do you mean using a bypass cap?
I'm not a modder but from what I've read Sean will offer lots of ideas to improve Omen performance. I kind of like the sound of mine as is and I've compared Omens directly with Zu models up the chain, so I'd be afraid to mod mine too much, but that's just me. I did the ClarityCap upgrade myself and that hits the limits of my modding ability.
Zu used to use a parallel resistor but then I believe for Omen Mk II they switched supertweeters and found it was no longer necessary.
Yes I may actually at some time contact Sean, I have been considering changing the elements entirely! 😁
I started with the clarity cap, a decent upgrade it is. But after reading on misc forums, I ended up with Mundorf Supremes 1uf and with a 0,1uf in parallell. I must say, a HUGE difference over the clarity cap!
I added a 63ohm Duelund graphite resistor across the tweeter, that really helped the tweeter relax, without negative effects really..
I added a solid 1x1 inch oak dowel right underneath the main element towards the back wall. Made it a snug fit, had to force it in place, and glued it in place with epoxy glue.
Prior to this, I used about 1L of noise-x sound paint (for each speaker) in 3-4 layers all over the insides.
aldso adding new bolts with nuts torqued from the back side of the front plate, allowing for much higher torque.
made the cabinet «talk» vanish, and a much more dynamic sound all over. Good improvement in imaging as well!!