In the following rig rundown (courtesy of Fredrik Svensson of Gitarr zombien) Fredrik Åkesson explains his set-up and rig. During this shoot Opeth was still testing the Box of Doom. Fredrik was already impressed, he couldn't resist showing off his Box of Doom, or as he says "doom box"..
For more information on the set-up of the Box of Doom units, used by Opeth check the references page.