hermetico
New member
Re: My Amp Soufs TOO NOISY
If that guitar, cable and pedals work fine in other amp, then the issue is in that amp. Amp issues are 95% related to tubes.
Unfortunatelly, current production tubes aren't so reliable. I had tubes that lasted just 1 hour and, some others that I never had to change.
My bet is:
V1 - since you are having noise even in clean channel.
PI / Driver - I don't know to which tube number corresponds in your amp but, PI tubes that go bad are a real mess. Probably, it's your tube V9.
Power tubes - if you bought it second hand, maybe they are old enough.
Tubes that worked fine, can go wrong during transport. Some bumps on the road and their metallic parts go loose and microphonic issues start.
If swapping just one tube doesn't fixes the issue, you have more than one bad tube there, for sure.
Cascaded gain, usually works using more than one tube for each channel and, usually, all channels share at least the first triode of first tube. Maybe V6 is the last tube for all your channels, while V1 is your first tube for all channels.
I would focus first on to swap V1, V6 and V9 at same time.
Be sure to put on V1 a high quality low microphonics tube.
If that guitar, cable and pedals work fine in other amp, then the issue is in that amp. Amp issues are 95% related to tubes.
Unfortunatelly, current production tubes aren't so reliable. I had tubes that lasted just 1 hour and, some others that I never had to change.
My bet is:
V1 - since you are having noise even in clean channel.
PI / Driver - I don't know to which tube number corresponds in your amp but, PI tubes that go bad are a real mess. Probably, it's your tube V9.
Power tubes - if you bought it second hand, maybe they are old enough.
Tubes that worked fine, can go wrong during transport. Some bumps on the road and their metallic parts go loose and microphonic issues start.
If swapping just one tube doesn't fixes the issue, you have more than one bad tube there, for sure.
Cascaded gain, usually works using more than one tube for each channel and, usually, all channels share at least the first triode of first tube. Maybe V6 is the last tube for all your channels, while V1 is your first tube for all channels.
I would focus first on to swap V1, V6 and V9 at same time.
Be sure to put on V1 a high quality low microphonics tube.
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