Tubes Asylum

• RE: Need help to choose 12bh7 - shane. 22:50:58 03/31/15 (0)
  In Reply to: RE: Need help to choose 12bh7 posted by pc123v on March 26, 2015 at 02:45:34

  I had a pre and also a power amp that used these tubes some time ago - long enough that they were cheap enough to buy and experiment with.
  
  If you get the chance, try and find AWV Super Radiotron. Australian made tubes from around 1960 to late 1970's. Hands down best for me.
  

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• RE: Need help to choose 12bh7 - BCR 05:22:29 03/26/15 (0)
  In Reply to: RE: Need help to choose 12bh7 posted by pc123v on March 26, 2015 at 02:45:34

  GE are my favorite!
  

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• NOS Tung-Sol or RCA (nt) - Chip647 04:47:52 03/26/15 (10)
  In Reply to: RE: Need help to choose 12bh7 posted by pc123v on March 26, 2015 at 02:45:34

  
  

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  • Raytheon BP 12BH7A - FenderLover 07:17:57 03/26/15 (9)
    In Reply to: RE: NOS Tung-Sol or RCA (nt) posted by Chip647 on March 26, 2015 at 04:47:52

    I've used these in several amps, through the years. Very clean, warm tone. Prolly nice repro of female vocals.
    

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    • RE: Raytheon BP 12BH7A - sony6060 13:50:00 03/26/15 (8)
      In Reply to: RE: Raytheon BP 12BH7A posted by FenderLover on March 26, 2015 at 07:17:57

      I second that Raytheon recommendation.
      

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      • RE: Raytheon BP 12BH7A - rosendds@frontiernet.net 17:14:37 03/26/15 (7)
        In Reply to: RE: Raytheon BP 12BH7A posted by sony6060 on March 26, 2015 at 13:50:00

        How do RCA black plate 12bh7's rank?I can tell you that I like the RCA 12bh7 grey plates in my Mc240.
        

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        • RE: Raytheon BP 12BH7A - sony6060 18:54:50 03/26/15 (0)
          In Reply to: RE: Raytheon BP 12BH7A posted by rosendds@frontiernet.net on March 26, 2015 at 17:14:37

          I prefer the RCA grey plate to the black plate. But, Raytheon is my favorite.
          

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        • RE: Raytheon BP 12BH7A - FenderLover 18:42:15 03/26/15 (5)
          In Reply to: RE: Raytheon BP 12BH7A posted by rosendds@frontiernet.net on March 26, 2015 at 17:14:37

          IMHO, the Raytheon 12BH7 have a cleaner high note. The RCA a richer midrange.
          

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          • RE: Raytheon BP 12BH7A - pc123v 10:42:39 03/27/15 (4)
            In Reply to: RE: Raytheon BP 12BH7A posted by FenderLover on March 26, 2015 at 18:42:15

            Thanks Fenderlover and everyone. Sounds like the Raytheon BP 12bh7a could be a possibility.
            
            @Fenderlover...would you say that the Raytheons could be tilted towards high frequency? Besides the top end being smooth...judging from my system now...I should also avoid tubes with excessive HF energy. Full bodied vocals is priorty. System is on the lean side, thus HF is emphasized.
            
            Thanks again for your help.
            

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            • RE: Raytheon BP 12BH7A - FenderLover 18:03:20 03/27/15 (3)
              In Reply to: RE: Raytheon BP 12BH7A posted by pc123v on March 27, 2015 at 10:42:39

              In my experience, the Raytheon are not tilted to the highs. Not like Sylvania. The Raytheon have very good bass and mids. Not warm. But, neutral.
              

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              • RE: Raytheon BP 12BH7A - pc123v 05:16:09 03/29/15 (2)
                In Reply to: RE: Raytheon BP 12BH7A posted by FenderLover on March 27, 2015 at 18:03:20

                Thanks Fenderlover.
                
                @ Fenderlover or anyone who knows...
                
                I am using 12bh7. Would the 12bh7a be an identical substitute?
                
                Thanks again.
                

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                • RE: Raytheon BP 12BH7A - FenderLover 08:22:31 03/29/15 (1)
                  In Reply to: RE: Raytheon BP 12BH7A posted by pc123v on March 29, 2015 at 05:16:09

                  12BH7A is interchangeable with the 12BH7. The "A" version has a controlled heater warm-up. Useful in stringed-series heater circuits. This feature doesn't effect a circuit designed to use the 12BH7.

                  • http://www.mif.pg.gda.pl/homepages/frank/sheets/093/1/12BH7A   (Open in New Window)

                  
                  

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                  • RE: Raytheon BP 12BH7A - pc123v 05:37:36 03/31/15 (0)
                    In Reply to: RE: Raytheon BP 12BH7A posted by FenderLover on March 29, 2015 at 08:22:31

                    @Fenderlover....Thanks.
                    
                    Sorry for being such a pest...can you recommend a reputable online tube vendor? Trying to avoid buying off eBay.
                    
                    Btw...are you familiar with sq of Westinghouse 12bh7a grey plate?
                    
                    Thanks again.
                    

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