Site Index:


Ferrograph Book

Ferrograph CD

About the Author

Famous Ferro's

Best of British






In This Section:



Vortexion PPM3

Vortexion 3/PPM valve mixer - originally designed and first produced in 1950, was still being advertised in 1970 albeit with changes in the valve line up

Vortexion 50/70

Vortexion 50/70 FET Amplifer available during the late 1960s early 1970s


Vortexion CBL6

Vortexion CBL6 Stereo reel to Reel tape recorder first marketed from around 1965




A short history - 2

Probably though the best known of the Vortexion range which appeared around this time was an amplifier known as the   “Wimbledon” and the “Super Fifty” this used as the power output, a pair of 807 beam tetrodes in class AB2; at first glance these may appear to be a slightly unconventional choice of valve as they were more often found in the RF or driver stages of transmitters and examples will be found in the No19 set and various amateur radio transmitters of the period. Vortexion got them to work well enough in the amplifier and  the 807 based model was produced for a number of years until the change to EL34s in the early 1960s.

Throughout the 1950s and early 1960s the amplifier equipment was joined by a small range of high quality mixers, some of these were produced with 3 or even 5 identical channels for low impedance microphones of the balanced line type while others allowed for the mixing of a gram input and microphones. Another type, marketed as the 3/PPM and first introduced in the very early 1950s, featured a peak programme meter for accurately monitoring the resulting signals. Much of this equipment was designed for professional applications with the basic design behind these remaining virtually unchanged for a number of years. 

Vortexion WVA Early
A rare and very early Vortexion "A" dating from around 1953. It was briefly offered with a Truvox deck option alongside the standard Wearite deck seen here. This particular version was not in production for long, before it adopted the more familiar black Rexene look and major changes made to the amplifier chassis. The speaker in this early model was housed in the base of the cabinet.


Vortexion eventually entered the tape recorder market in 1953 with their first “A” model, followed by the WVA and WVB series. The design changed very little until the final model, the stereo CBL6 of 1967 which was considered by some to be the finest stereo reel to reel tape recorder ever produced in the UK. All of the machines used the Ferrograph Wearite tape transport making Vortexion one of the largest users of the deck with Clarke and Smith a very close second. With the demise of the Wearite deck in early 1968, Vortexion briefly marketed the CBL7/ T this was designed around the ill fated Ferrograph Series 7 deck launched later that year. The new range was abruptly withdrawn after a considerable investment in the development of the new recorder, with the subsequent marketing yielding few sales. The late 1960s also saw Vortexion make the move into transistors and one of the first of the designs to appear was the CP50, a 50watt amplifier.  This was still being advertised under the CSI banner as late as 1979. Vortexion do not appear to have attempted to produce any Hi-Fi amplifiers choosing it would seem, to remain in the more specialised markets of sound reinforcement.

Vortexion WVB
A later Vortexion WVB. These were fitted with a third head for monitoring as standard. The Wearite deck is a late Series 5