Vox AC50s from the last third of 1964, unknown serial numbers

Valve rectified, large box

On this page, valve-rectified large-box AC50s with slot and dome voltage selectors, unknown serial numbers.

An introductory page on the mark 2 .

Serial numbers 1360-1760 . Serial numbers 1750-2200 .

SURVIVING AMPS - UNKNOWN SERIAL NUMBERS

Serial number unknown - whereabouts unknown

Black escutcheon panel for the XLR sockets. Slot voltage selector.

Serial number unknown - whereabouts unknown

Original XLR connectors in place on an early-style black plate. Note that no mains connector was provided - the lead is hard wired, as in the case of no. 1678 below. Also note that the fixing on the top edge of the back panel is centred.

Serial number unknown - currently in New Zealand

Slot voltage selector. Grille cloth and baffle replaced, but to judge from the control panel, in good condition otherwise. Transformers look to be original.

Serial number unknown - currently in the UK

The pictures are just a little too small to be sure, but the serial number looks as though it may be hand stamped. Rotary voltage selector.

Serial number unknown - currently in the USA

"AC50" is hand stamped, the serial number, too feint to make out, is machine stamped. The grille cloth is now 1970s Rose Morris. The transformers still have their original stickers. Mustard capacitor date codes: "A4N" and "B/64" = first and second quarter of 1964. One of the pots has the code: "GL" = July 1964.

Serial number unknown - currently in the UK

A nice amp. Valve rectified, rotary voltage selector, stickers still on its transformers, and a set of original valves. The Mullard ECC82 has the code B4K2 = Blackburn Factory, 1964, 2nd week of November. Amp probably produced in late 1964 or very early 1965.

Serial number unknown - currently in the USA

Replaced output transformer, but otherwise all there. The two smaller mustard caps have the date code "C3N" = third quarter of 1964. The larger 0.1uf caps have the codes "B5N" = second quarter of 1965.

Serial number unknown - currently in the UK

Mains cable still hard-wired. Pictures from

Serial number unknown - currently in the UK

Old pictures, which though small, show the three valves through the grille, and the lack of a mains connector on the back panel. The preamp looks to be in good order.

Serial number unknown - currently in the USA

Pot codes "GL" = July 1964, so the amp probably produced late 1964. The box, with its Amphenol connectors, is later.

Serial number unknown - currently in the USA?

Probably to be included here - note the old-style black panel for the output XLRs. The cab and trolley may be later however - observe the round Amphenol connector. Early cabs had rectangular Cannons. .

Serial number unknown - currently in the USA

The first picture is before, the other two after restoration. Certainly a dome voltage selector. Output transformer has been replaced. The position of the internal fuse is horizontal (as in Mark 1 amps) rather than vertical.

Serial number unknown - currently in the UK

Ancient pics from ebay. Valve rectified, rotary voltage selector. Not identifiably any of the amps above - there is a distinctive scuff on the back board above the serial number plate.

Serial number unknown - currently in the UK

Paired with a re-grilled Conqueror cab. The three main valves are just visible through the grille in the last picture. Note on the back the white warning plaque, the lack of mains connector, and the black panel on which the XLR speaker sockets sit.