On 04-May-98, Five wrote: >Ultimately, I'd like to build a pair of SV filters around the SSM2040, that I >could switch between LPF/HPF/BPF/Notch selections on each of the two of them, Try http://www.tomg.vivid.net/maxx/page_015.html It's not a 2040 but it's got LPF/HPF/BPF. -Tom