TubeMeister TM112 60W 1x12 Guitar Speaker Cabinet. The Hughes & Kettner TubeMeister TM112 60W 1x12 cab is a great partner for your TubeMeister combo or head. Mr. Hughes and Herr Kettner used their know-how to create a cab that would function perfectly with the rest of the TubeMeister family. It features a sweet Celestion Vintage 30 speaker in a compact bass reflex housing. Its a steel fist in a velvet glove delivering all the tonal subtleties of the TubeMeister 18 Head with a punch that will rock your world.