K2 Insert jack connections

Recently we carried out a major service on a Soundcraft K2 mixer. The mixer required some general repair , cleaning and some limited fader and pot replacement.

The mixer has three jack connections on the rear of each channel seen below:



Two of these are good quality metal fronted jack connectors while the central insert connection (which gets the most abuse) is an all plastic type which is commonly found on budget devices.

The plastic connector takes much less mechanical abuse than the metal equivalent and hence the board connections to the insert are liable to dry joints and will require attention.

This dry joint causes a very weak signal to reach the main or group mix although the input signal on the PFL is still a strong level.