I use DSL20HR with emulated out connection. I have found that two knobs won't do anything: reconance and precence. Is this normal or is my amp broken?
Other EQ knobs working fine.
I purchased an AS50D amp a while ago, and while I've otherwise been extremely happy with it, when it arrived the caps fell off many of the knobs, which is obviously annoying since I can't see what the current settings are.
I contacted the (Swiss, German-speaking) vendor, who contacted Marshall, and they shipped me a baggy of replacement knobs.
Naively it appears that I should be able to pull the old knobs off and push these on (as I see no evidence of a set-screw anywhere). However, applying reasonable force with my hand or even prying with a screwdriver, I can't get the old knobs to come off. I don't want to risk applying a large force until I'm more confident that I'm following the correct procedure and won't break anything.
So, my questions are
- are these in fact the correct replacement knobs?
- what is the recommended procedure to replace the knobs?
- if I am supposed to simply pull the old knobs off, should I expect to apply a lot of force?
- if not and these are the correct knobs, what is the recommended procedure to replace the knobs?