Ik heb gekeken in de handleiding en daar staat:

First plug the speaker cord into the appropriate output on the Head.
Do not use more than one of these outputs simultaneously! That is, use
either 1x4 ohms, 2x16 ohms, 1x8 ohms, or 1x16 ohms. Don’t mix and
match cabinets either, say by plugging a 4-ohm cabinet into the 4-ohm
output and a 16-ohm cabinet into the 16-ohm output.
Plug the other end of the cord into the speaker cabinet’s Input. This is
vital to every all-tube amp’s life! Power amps may be damaged when
tube amps are operated without a connected speaker load or at an
insuffi cient impedance level!

Het is blijkbaar 2 x16 ohm en geen 2 x 8 ohm.

Dus moet ik waarschijnlijk de tweede cab doorlussen?