ACOS MIC35-1 CRYSTAL MICROPHONE, 1950's

Crystal microphone made in the early 1950's at the Enfield factory of Cosmocord Ltd, they relocated to Waltham Cross in 1956. Crystal Microphones are very high impedance and provide a higher voltage output than other types, they are fragile and if dropped will probably cease to function, they are however the cheapest type. These types of microphone were supplied with low cost equipment such as Tape Recorders for domestic use.

Nortel Collection

A1354