Post by kcatthedog on Apr 4, 2015 4:56:28 GMT -6
so, with my interest in quality diy mikes ( 47/12): thank you cat5, of course, now I am interested in tubes and nos tubes or valves if your british 
Just bought 2 nos ericsson 408a for the mk-u47: one's good the other hissy .
So, my question is why : what causes tube noise and or failing performance over time ?
Also. what is known about the history of how manufacturers shared parts in the past ?
for example the ericson and rca 408a with chrome anode: are they the same tube with same sound or just look similar ?
thx: huge topic but many of you here have way more knowledge than me and I am always grateful when people share.
Just bought 2 nos ericsson 408a for the mk-u47: one's good the other hissy .
So, my question is why : what causes tube noise and or failing performance over time ?
Also. what is known about the history of how manufacturers shared parts in the past ?
for example the ericson and rca 408a with chrome anode: are they the same tube with same sound or just look similar ?
thx: huge topic but many of you here have way more knowledge than me and I am always grateful when people share.
