["pop"-noise when changing patches]

Good luck finding one that doesn't have the VCA bug. In fact, let us know when you do, that would be huge news :wink:

Does your encoder skip forward and backward more steps than you would expect from a single "click"? In that case it could be as easy as changing the encoder type in the configuration file.

Hehe, OK, just thought I read somewhere that this was solved in the later revisions.

Yes, but I really don´t understand what this "configuration file" is? Do I need to reprogram the PIC? (I know this is a "lazy" question, since I probably can find the answer myself, but I didn´t find it at a quick search)

["pop"-noise when changing patches]

Thanks for your replies!

Hmm... I´m a little bit disappointed to hear this actually.

It doesn´t help that my SID-chip has the VCA "leakage" bug as well, but a gate at the sound output will solve that.

The problem is that my encoder for selecting patches is very "unstable", so I hear a lot of "popping" before I reach my desired patch. I found some threads about this problem at this forum, but I don´t know which "cure" I should use.

["pop"-noise when changing patches]

Hi,

I just bought a MIDIbox SID v1 at an auction, sold as-is.

It works fine, but when I change patches on it I always hear a loud short "pop"-noise.

It is the same whether I change it with the units encoder or via "program change"-message via MIDI.

Could anyone help me to find out what is wrong?

P.S. I will upgrade it to V2 as soon as I find the time