Hello and thank you for taking this question. I currently have a Peavey headliner 1000 and a Peavey headliner 4x10 cab. The head runs at 1000w RMS at 4ohms and the cab is rated for 800w at 8ohms. I was reading that I would be able to get more power out of the head by adding another 8ohm cabinet and have them function together at 4ohms. My question is whether I should add another headliner 4x10 cab or the headliner 2x10 cab which handles 400w at 8ohms. I'm not sure exactly how many watts you would want the combined cabinets to be rated for or if that even matters. For instance two 4x10's would both be 800w at 8 ohms vs a 4x10 and 2x10 where one is 800w and the other 400w at 8 ohms. I'm just kinda confused. Thank you and I'm sorry in advance if this question is redundant.