Many thanks for your help! Okay, I have found the wrong parts. Now there are a lot of new inconsistencies. If I stop my player and restart after a while impulse freeze in one second. Then I must restart player (clementine) and coverbox. The same if I reload coverbox after changing something.
And another question: Can you explain for what amplified = "2" exp_factor = "0.8" is?
You must add impulse files (.py and .so) inside your skin folder copying these from my impulse skin released with coverbox, and for last, add all the code in the section <widget.../> of skin.xml as is in my skin, you can set bars colors, spacing and size.
Good stuff I only wish that the equaliser was embedded in the skin. Can CoverGloobus handle such interactive thing? The skin itself works fine for me (with Clementine) but I can't get impulse to work and don't like to use screenlets on KDE anyway ..