I think you're only going to be able to do 4 Ohm or 16 Ohm. Or 2 sets of 8 Ohm.
Hmm, I know parallel would be (16 * 8) / (16 + 8), so that seems right for daisy chaining (I think). Still nothing usable. :noway:It's been a while, but I think you'd get (16+8)/2 = 12.
:metal: "Sensitivity to speaker mismatching in regards to ohmage differences is low, hence no damage to the amplifier will occur. However,Read the manual for your recto. I don't think you actually have a problem.
You can use both cabs as is, as the recto (per the manual) says that ohm mismatching won't damage the amp (it will cause the tubes to wear a little faster, that's it).