Synton Potted Modules

In the early period of Synton, just like ARP and others, parts of circuits were potted in boxes. At Synton, these were:
7717 Voltage Controlled Filter
7710 Exponential Conververtor
7707 Highpass, Lowpass, Bandpass Filter
4411 Expocon
5516 VC Oscillator KBO
5588 ATNF
4401 MLA