A modified version of the 3FX socket, this incorporates a rotary switch with positive click action, labelled “on” and “off”. “Off” position shorts pins 2 and 3.
Positive locking version of the 3FX socket, designed for applications where a secure connection is imperative, or to discourage microphone theft. A screw ring on the connector body operates the normal latch bar, forcing it upwards and retaining its position. The design of this ring permits close-coupling to most microphones, thus ensuring an extremely tight noiseless fit. A small hex-head screw locks the ring in the latched position, to discourage unauthorised removal. The secure ‘co-axial’ shell coupling also makes it particularly suitable for digital signal connections.