THE VOX V100
Advert from the Melody Maker, April 10th 1971
Vox Sound Ltd's move to introduce a 100W valve "concert" amp, perhaps too late in an already crowded marketplace. The recommended cab or cabs will presumably have been a Supreme 4x12" (midax horns had been dispensed with by 1971), a multi-link 4x12", or a 2x15" + 2x12", though nothing is said in the brochures and adverts.
Had a "name" artist or group taken a V100 or two up, VSL might have capitalised. As it turned out, probably fewer than two hundred were produced - a pity, as the amp is capable of producing a good sound. Pictures of anyone using V100s on stage in the 1970s have yet to emerge.
Nor a price-list to show how much the amp cost.
As can be seen from the flyer above and the images of amps below, the box was effectively a standard solid state amp box slightly reworked.
The power section of these amps was based in part on the last iteration of the Vox AC100 - zener diodes to provide the bias voltage; doubled-up filter capacitors to increase reliability; and still the brimistor.
For reference, the last schematic of the AC100, re-drawn in VSEL days (4th December 1969), which shows the design was very much alive even if the AC100 itself was out of production:
To the left of V2, things are different, as the V100 has only two preamp valves - V2 and V3, both ECC83s. But otherwise the circuit is very familiar.
EXAMPLES OF SURVIVING AMPLIFIERS
Serial no. 1009
Serial no. 1013
Serial no. 1039
Serial no. 1069
Serial no. 1105
Serial no. 1106
Serial no. 1120
Serial no. 1149
Serial no. 1152
Serial numbers unknown