How to use a switch to select different resistors

[Guybrush]

Hi all

I'd like to make R9 on the MK1 Tone Vendor circuit switchable so I can choose from two different values.

Simple question - how do I do this please?

Hopefully it's a simple answer, but a basic diagram would be appreciated if possible.

Thanks.

 

[Aleph Null]

Here's How I would do it. The blue lines represent the resistor leads, the green, your wire. Using an On/On switch each resistor will be connected to an outside lug and to the middle lug, then a wire from the two outside lugs is each attached to a resistor pad on the PCB. Depending on how the switch is flipped, one of the resistors will be shorted and the other selected.

 

[pricklyrobot]

This is another way to do it.

 

[pricklyrobot]

Or, if you want to get fancy, use an On/Off/On, do a little bit of parallel resistance math (it builds character!), and have three values on tap.

 

[pricklyrobot]

Or skip the paralleling and use a DPDT On-On-On toggle