From: xtrchessreal@gmail.com   
      
   On Friday, October 2, 2020 at 2:50:43 AM UTC-6, Xtrchessreal wrote:   
   > On Thursday, October 1, 2020 at 8:57:07 PM UTC-6, palli...@gmail.com wrote:   
   > > Xtrchessreal wrote:   
   > >   
   > > ===================   
   > > > Section 1 is so called due to lower hum compared to section 2.   
   > > >   
   > > ** The 2 triodes of a 12AX7 / ECC83 are identical, one doe not "hum" more   
   than the other.   
   > >   
   > > Internal connection arrangements for grids and heaters vary between   
   versions and brands, maybe having a small effect on capacitive coupling if   
   high impedances feed he grids.   
   > >   
   > > It is very common to use DC voltage for the heaters to eliminate any   
   issues whether grid or cathode related.   
   > >   
   > >   
   > >   
   > > .... Phil   
    Just read the REMARK on the bottom of page one. https://drtube.   
   om/datasheets/ecc83-philips1970.pdf   
    I don't understand the perpetual misinformation. V1B is triode with pins   
   6,7,8.   
    But hey, thanks for making my point more clear.   
      
   http://www.eierc.com/rc/ECC83.htm  NOTE: under the pinout   
   Similar remarks and notes can be found on many 12ax7,12au7,...etc data sheets   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)