JLM Go between kits , how to modify for impedance select , ideas welcome

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andre tchmil

andre tchmil

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Hi all.
Need to rack some preamps and I'm using the JLM go between kit for the project.
Preamps do have a phase switch on board, so I was thinking if I could use the existing JLM phase switch as an 150/600 ohm impedance switcher. Ideas very much welcome.

 
not really practical, as jlm phase is 'hardwired' using pcb traces. I would recommend to leave the jlm phase switch (and the hole on the front panel) out altogether and jumper off the relevant parts of the go-between pcb. add an impedance switch off-board, which you can insert either before or after the go-between.
 
briomusic said:
not really practical, as jlm phase is 'hardwired' using pcb traces. I would recommend to leave the jlm phase switch (and the hole on the front panel) out altogether and jumper off the relevant parts of the go-between pcb. add an impedance switch off-board, which you can insert either before or after the go-between.
Click to expand...


You have a point there, but since the spacing for 3 switches is already there...
 

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