I just bought a BG-400 and have been using it in combination with my Markbass New York 121 cab at lower volumes just playin' around. Now, the Speakon out says 8 Ohms on the combo, and the cab is 8 Ohms, but I want to be sure that there isn't something that I am missing and you should only use another PJB cab and running this way could damage something. I don't think that I would have given this a second thought, however, I cannot find another example out there of someone using the PJB BG-400 with another brand cab. Any [we'll call it] reassurance would be much appreciated! Ha!