Anyone familiar with 60's era Vox amps might suspect that the Supreme and AC-100 speaker cabinets are quite similar. About the only difference between the Supreme and the AC-100 speaker cabinets is the input jack. Vox dropped the locking, XLR style speaker cable connectors used in the AC-100 in favor of more conventional 1/4" phone jacks in the Supreme.

The original Supreme cabinets were constructed of 3/4" thirteen ply baltic birch and had removable baffle panels that were secured with 14 machine bolts and three wood screws. The three removable back panels are made of 3/8" five ply baltic birch.

Some later versions of the Supreme speaker cabinet were constructed of particle board and had less expensive Goodmans 12" speakers with ceramic magnets.

The total impedance of the Supreme enclosure is 8 ohms. The speaker output jack of the Supreme head states "15 ohms," but in reality the output transformerless (OTL) circuitry used in the Supreme head will accept any impedance from 4 to 16 ohms.

It is somewhat curious that Vox included two Goodmans Midax horns in the Supreme speaker cabinet. Vox originally included these horns in the speaker systems for the AC-100 and AC-50 tube amp heads because these heads did not have much treble. The Supreme had no lack of treble, and probably would not need horns. As the Supreme was the British version of the American Vox Super Beatle, and the Super Beatle had Midax horns, the Supreme did as well.