Linn Keltik old style tunebox

Hello there,

I have recently upgraded to Keltiks and the crossover came with the speakers are a LK-styled box. I checked bit history on the web and believe this is the early version of the crossover. And looks like there are some soldering job required if I want to adjust the treble and bass.

Does anyone still have the information on hand that can share with me? It should be a table telling you a value of a resistor and corresponding level of adjustment.

Thanks for help.