So I've finally took a different approach to change the sound of hd800 to something more of my taste.
The annax mod is a bit complicate for me to apply (I must get that creatology thing ...).
So finally I got the idea for a much easier mod.
I used one of these round sponge , that let young sudents , erase chalk from their slate .
A pic just in case you don't see what I mean:
So it's a sponge with a diameter of 6cm, and a thickness of roughly 8mm.
I tried cut it into two equal parts with a scissor:
Then I've inserted each part directly above the dust cover, on region where there's the trapezoidal section.
I've tried to apply each part in symmetric way, and I 've pushed as much as possible the sponge against the mesh,
to limit the area of the driver that might be hidden.
The sponge is too thick, you can't put it behind dust cover .
But it stays in place.
The changes in the sound signature are not subtle.
The treble is "tamed", and softer (or perhaps more "diffuse").
There's less "sparkle", or should I say unnecessary "aural excitement".
It sounds overall "warmer", perhaps more "analog".
The mids are more forward and I love this, because this my favorite part on the hd800.
The imaging is improved i.e it's more "realistically 3D".
I heard some stuff "vibrating near my ear", and I thought there was a resonance problem with the sponge.
But nope, it's in the recording when I remove the sponge, I was just tricked into thinking that's a real thing.
So overall, I like the result, and I'll remove this easily if I change my mind.
Also , I'd like to add if some of "excitement" from treble is gone, with this mod I think it's better for longer listening session.
I'd think the treble emphasis of stock hd800 give the illusion of something "more focused" , but it harms the genuine imaging.
No I can't get same result with an eq.
Edited by extrabigmehdi - 7/24/13 at 5:38am