Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
Normal
Generally speaking I have rarely heard pops and bangs. Pings are quite common and if you tap some tubes there is a definite resonance like maybe the grid vibrating.Plus or minus 10% is normal for tubes but so called NOS tubes vary even more. Many NOS tubes, especially on eBay, are not new and unused and you really do need to thoroughly test each and every one before using it. That's why I only use current production tubes now.Zero ohms. Noise in tubes is almost entirely voltage noise. Using anything other than zero just invites the pick up of external interference.I am sure there is but I am am not sure it is worth it. There is probably some learned treatise about this in the RCA tube manual. When it comes to noise the duffers are easy to spot.Cheersian
Generally speaking I have rarely heard pops and bangs. Pings are quite common and if you tap some tubes there is a definite resonance like maybe the grid vibrating.
Plus or minus 10% is normal for tubes but so called NOS tubes vary even more. Many NOS tubes, especially on eBay, are not new and unused and you really do need to thoroughly test each and every one before using it. That's why I only use current production tubes now.
Zero ohms. Noise in tubes is almost entirely voltage noise. Using anything other than zero just invites the pick up of external interference.
I am sure there is but I am am not sure it is worth it. There is probably some learned treatise about this in the RCA tube manual. When it comes to noise the duffers are easy to spot.
Cheers
ian
