I have just built my Linkwitz Crossfeed circuit as supplied by Tangentsoft and I am a little unsure if I have installed the jumpers correctly. I wanted to use the board in a set configuration of low crossfeed so have not installed switches. I have soldered one jumper from S1L1 to S1L2 and a second jumper from S2E1 to S2E2. I have tested the circuit and the bass just disappears and the presentation is a little harsh.
I have re-read the article on the Tangentsoft website and in particular the bit that says "If you only want one crossfeed setting, you can leave out the R1As and jumper from each S1C to the corresponding S1L" which I think suggests that my jumpers are incorrect.
Any help is appreciated.