Currently Being ModeratedMar 12, 2011 7:15 AM (in response to pedgar1)Re: Random Changes to Settings
There is a phenomenon known amongst other things as 'control knob jitter'
What this does is to move the physical positions of some control knobs slightly due to vibration from the speaker. When a preset is selected it over-rides the positions of the control knobs, but as soom as one of those knobs is moved, a change is registered in the DSP and your sound can change.
The solution is to physically position all controls (except Master Volume) at 0% and then the controls are less likely to be affected.
Currently Being ModeratedMar 12, 2011 5:08 PM (in response to Nick_Mattocks)Re: Random Changes to Settings
I should have also mentioned that I was lining out into a PA when this happened (amp speaker not active). The amp was situated next to a monitor (we are in a small practice room) so it is possible that the closeness of the monitor to the amp may have caused what you are describing. At my next rehearsal, I will turn all the controls to "0" and see what happens. Thanks.
Currently Being ModeratedMar 21, 2011 2:10 PM (in response to pedgar1)RE: Random Changes to Settings
Just like Nick mentioned, sometimes the digital encoder knobs can move very slightly which can can end up causing a HUGE change in tone or effects. The preset's settings have nothing to do with what the actual knob on the amp is reading, so a slight adjustment of the knob can snap the preset's setting to wherever the knob on your amp is set to.
Hope this helps.