VOX SOLID STATE AMP SCHEMATICS

JENNINGS MUSICAL INDUSTRIES AMPS - the Mark I schematics

Virtuoso Power section - OS132
Schematic for the Vox Virtuoso power section

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Conqueror and Dynamic Bass power section - OS133
Schematic for the Vox Conqueror and Dynamic Bass power section
Defiant and Foundation Bass power section - OS134
Schematic for the Vox Defiant and Foundation Bass power section
Supreme and Super Foundation Bass power section - OS135
Schematic for the Vox Supreme and Super Foundation Bass power section
Virtuoso, Conqueror, Defiant and Supreme preamp - OS136
Dynamic, Foundation and Super Foundation Bass preamp - OS137

LATER AMPS (1969-1972) - the Mark II / Mark III schematics

In the main, the power sections of the guitar and bass amps follow the older JMI schematics. However, in late 1969 the standby circuit was removed.

OS/184, which bears the name of Vox Sound Limited, was actually taken over from the Vox Sound Equipment Limited Mark II schematic. Note the register of changes, top left, and the signs of erasures in the panel, lower left - which one can see also lower left in OS/185.

Vox Sound Equipment Limited and Vox Sound Limited schematic for the guitar preamps, changes

The list of changes from OS/184. In terms of the preamp, "Mark II" was the new six-position MRB.

Vox Sound Equipment Limited and Vox Sound Limited schematic for the guitar preamps, descriptive panel

The lower left panel of OS/184, bearing signs of erasure and updating.

Conqueror, Defiant and Supreme preamp - OS/184
Vox Sound Equipment Limited and Vox Sound Limited schematic for the guitar preamps, descriptive panel

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Dynamic Bass, Foundation and Super Foundation Bass preamp - OS/185
Vox Sound Equipment Limited and Vox Sound Limited schematic for the bass preamps

The Public Address Amplifiers - 1969-1973

The Vox Sound Equipment Limited schematic for the PA100SS mark 1 is OS/176; the PA50SS is OS/177.

OS/176. A good complete copy of the schematic, including the schedules of changes at top left.

OS/177 for the PA50 SS. The earliest visible change at top left is 2th November 1968 (though another clearly preceded it).