Hi. I just joined up as I have recently been interested in learning a bit more about Amps.
I just bought a used Crate FEX Retrofex 65 that has a loud crackle in it. This only happens at volumes that start to
create some real vibration. All three channels work perfectly at low volume but at about 4 or 5 it creates a horrible crackle.
especially on certain frequencies. I just discovered that I can reproduce the crackle by banging on the top of it with my fist.
I made a short video of it and posted it on You Tube.
http://www.youtube.com/watch?v=1TtRxe8IBMQ
I think that there are some loose solder joints in the output circuit that are causing this.
I would appreciate any input from any of you more experienced and knowledgeable members who have experienced this or
might have a clue.
Many Thanks
Pete