Esti
Member
- Joined
- Aug 18, 2009
- Messages
- 8
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I need help with my first tube amp, it is a Randall RG50TC.
The clean channel sounds nice, the volume is fully working, and all the tubes are warming up but the overdrive channel is sounding like ****, like a low gain SS amp, I have 3 more 12AX7 that I replaced and tested in different ways but the problem persists, almost no gain and ****ty sound on the distortion channel.
I don't know, maybe all my preamp tubes are bad? Maybe somebody experienced this before.
Something strange happened when I was testing the tubes.
One of them is a 12AT7EH and is known as the phase inverter (or someting like that), this tube was working nice but suddenly stopped working and I had to use one 12AX7 in replacement (when it happened the volume in both channels got reduced like 80%). Anyway the problem is still there, is like the distortion I am getting is not from the tubes, just the circuit gain or something.
I noticed something else too, when I try to play in the overdrive channel with the channel volume almost maxed the sound fade in and out when I hit the strings hard.
The clean channel sounds nice, the volume is fully working, and all the tubes are warming up but the overdrive channel is sounding like ****, like a low gain SS amp, I have 3 more 12AX7 that I replaced and tested in different ways but the problem persists, almost no gain and ****ty sound on the distortion channel.
I don't know, maybe all my preamp tubes are bad? Maybe somebody experienced this before.
Something strange happened when I was testing the tubes.
One of them is a 12AT7EH and is known as the phase inverter (or someting like that), this tube was working nice but suddenly stopped working and I had to use one 12AX7 in replacement (when it happened the volume in both channels got reduced like 80%). Anyway the problem is still there, is like the distortion I am getting is not from the tubes, just the circuit gain or something.
I noticed something else too, when I try to play in the overdrive channel with the channel volume almost maxed the sound fade in and out when I hit the strings hard.