bobbtoz
Silver Supporting Member
- Messages
- 226
Just want to get some feedback on what the problem could be. During the start of the second set I started hearing a very metallic tinny/ trebly sound. The amp did not cut out but I lost all dynamics and bottom end. Very trebly and somewhat buzzy.
I'm using a modified 100 watt JMP. I've owned this amp since mid summer. The previous owner told me the power tubes were new. I just fired up the amp and the 4 power tubes were glowing and looked fine. the preamp tubes on the other hand had various types of glow. The preamp tube in the tube buffered loop glowed similar to the power tubes but the other three preamp tubes were dim and one barley had a glow.
My guess is to replace the preamp tubes, but wanted to see what you guys thought.
Thanks
Bob T.
I'm using a modified 100 watt JMP. I've owned this amp since mid summer. The previous owner told me the power tubes were new. I just fired up the amp and the 4 power tubes were glowing and looked fine. the preamp tubes on the other hand had various types of glow. The preamp tube in the tube buffered loop glowed similar to the power tubes but the other three preamp tubes were dim and one barley had a glow.
My guess is to replace the preamp tubes, but wanted to see what you guys thought.
Thanks
Bob T.