On my Ambika I have 2 SVF cards. I’m quite fond of them, I haven’t been able to play around with them as much as I wanted, but I was testing them this evening and noticed an issue.
I will disassemble the Ambika later on and see if I can’t trace the issue with my multimeter, but from the way the filters sound, one of the SVF cards is lacking a proper low pass filter (it actually kind of sounds like the high pass filter is acting like a low pass filter).
Please listen to https://soundcloud.com/portervance/ambika-svf-filter-issue
The first 3 samples are SVF card #1, opening up the LP, BP, and HP filters then bringing them back down to 0. The second 3 samples are SVF card #2 (the one that has issues) doing the same order of filters. The last 2 samples are just a comparison of SVF #1 LP filter and SVF #2 LP filter. What’s going on here?