So, one big thanks to you again,
for your hard work and for your patience with me...
I don't know how, but I did it. Sound now is working well.
I just downloaded somewhere patched applehda.kext and I just have putted this to the S/L/E folder, ran the repair of permissions and rebuild of cache....
Here is my Clover folder zipped, for someone with same hardware.
https://www.dropbox.com/s/mu859lv40wh7lng/CLOVER.zip?dl=0
Now I will backup the system with time machine, or do you know some good software for HDD cloning?