New more compact ver3 PCB kit to make Rob Squires Passive Monitor Controller easily. Click on the image below to read the PDF article.
On this PCB mode control layout is MONO, STEREO, REV. R1 is 4K7 or 5k1 4 resistor SIL pack or 4 separate 4k7 or5k1 resistors
Passive Monitor Controller PCB ver 3 size is 86.9mm (3.42") x 36.9mm (1.34")
3 switches are spaced 30.48mm (1.2") apart centre to centre of the switch next to it.
Our TASCAM / IDC to XLR / TRS IN & OUT PCB & STEREO IO PCB can be used with this PCB as well.

PCB Kit parts list
3 x Alpha 3 position 4 pole rotary switches.
2 x 10pin header without frame
2 x 10pin IDC header with frame
1 x 26pin IDC header with frame
1 x 5k1 4 resistor SIL or 4 x 4k7 resistors
Optional
1 x Dual 10k log pot