id 100 tvp cab set up

[PSJ 282]

hi all

got the above amp and have a 2 x 12 marshall cab wired at 4ohms i do have another 2 x 12 cab with 2 8ohm celestions my question is do i wire both to 16ohm (series) and just plug each one into each of the speaker slots in the back?

thanks in advance ed