I was wondering if I could get an answer to a question I had about my rig. I have been using a GK 700RB-II head through a 410RBX-II cab and I want to extend my rig to include a 15. I found a good deal on a GK 115RBX and I was looking at the specs and I was getting completely confused. Both cabs have an impedance of 8 ohms and have a power handling of 400 watts. Now the specs for the 700RB are 480W @ 4 ohm and 320W @ 8 ohm This is the part thats messing me up. If I hook up two 8 ohm cabs to the head it changes the impedance to 4 ohms so then my head is pumping out 480 watts. Isnt this too much for the cabinets since both of them have power handlings of only 400 watts? This is what Ive come up with from reading the FAQ from this site and other sites. It just makes no sense in my head that these three GK products, that all appear to be designed to work together, would not be compatible when making a full stack. Am I completely off bass? (HA, pun) Thanks in advance to any help!