Currently have a 4 ohm 4x10 cab and my head states that the minimum load it will tolerate is 4 ohms. I would really, really like to add another cab to my setup but I don't know if that's even possible with that 4 ohm cab in the mix. I've read a few things about running 4 and 8 ohm cabs in series and one guy even said something about rewiring the 4 ohm cab to make it 8 ohms but that seemed pretty farfetched to me. Any suggestions other than ditching the 4 ohm 4x10 cab for 2 8 ohm cabs? Thanks in advance.