DPDT for switching caps?

[Descartes]

I'm building a Noisy Cricket, and I want to be able to switch one of the caps from 47 nf to 1 uF with a DPDT. Are there any drawbacks (i.e. pops or other weird noises) to wiring caps like this?

http://plaza.ufl.edu/bradt/dpdt.png

[TweedBassman]

yup, that'll do it. it will probably pop, especially if it's the input cap. but i've done that and it works fine.

[Descartes]

Is there any way I can avoid that? What if I use a SPDT like this?

http://plaza.ufl.edu/bradt/spdt.png

[el_tonto]

The SPDT will work as well as the DPDT version, and neither will have better pop characteristics than the other.

However to minimize popping, solder a 1 meg resistor across the outer terminals (as drawn) of your switch. That means that whichever cap is currently switched into the circuit, the other one is also attached through a very large resistor. However the resistor will always keep the unswitched cap at the same DC level as the switched cap. This will go a long way to minimizing pops.