A Blend PCB
- Thread starter K Pedals
- Start date
Yeah, maybe another stomp switch mounted board. Probably dual op amp for the dry side so you can select inverting or noninverting. Wet side often doesn’t need a buffer since many pedals have high input impedance. But there could be a switchable bjt buffer that goes before the board input. I say bjt because it’d probably be smaller than another op amp, and with the smd jfet situation being what it is, I’d prefer to just use a bjt where possible (I think bjt buffers sound just as good).
The for pedals with fewer than 6 pots, you can place the clean blend pot (with lugs) bear the other knobs. Maybe us lug pots for one or two other knobs so you can reorganize the layout.
The for pedals with fewer than 6 pots, you can place the clean blend pot (with lugs) bear the other knobs. Maybe us lug pots for one or two other knobs so you can reorganize the layout.
moonlightpedalbuilds
Well-known member
Something like this?
K Pedals
Well-known member
Yep...
pretty much...
I think it can be simpler.
the tagboard split n blend is used pretty commonly. It’s two jfet buffers, one feeds the pcb input and the other feeds the dry side of the blend pot directly. I don’t think they really need to be jfet buffers (although the high input impedance might be nice since there are two of them), so a dual op amp could be used for the wet side, with a dip switch to select inverting or noninverting, and maybe just a bjt buffer for the dry side to save space.
Here is a list of buffer options for reference. I’ve used a few of theseto make blend pots, including inverting and noninverting op amp, jfet, and bjt.
the tagboard split n blend is used pretty commonly. It’s two jfet buffers, one feeds the pcb input and the other feeds the dry side of the blend pot directly. I don’t think they really need to be jfet buffers (although the high input impedance might be nice since there are two of them), so a dual op amp could be used for the wet side, with a dip switch to select inverting or noninverting, and maybe just a bjt buffer for the dry side to save space.
Here is a list of buffer options for reference. I’ve used a few of theseto make blend pots, including inverting and noninverting op amp, jfet, and bjt.
bifurcation
Well-known member
Probably don't need that inverter switch if it's going to be hardwired with two effects within a single enclosure.
