craiguitar
Power User
The 1922 cab doesn't have a switch.Just as a heads up. Always keep the Marshall cab switched to stereo. Double check it is in that mode before connecting both outputs. In mono mode it will link the outputs of the amp and damage it so always check or tape the switch to prevent it moving. If using a different cab, check that as well. If not a stereo cab (with a switchable plate or marked as stereo) i'd play safe and run mono with a strange cab.