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DISCLAIMER: Vacuum tube circuits work with dangerously high voltages. Do not attempt to build circuits presented on this site if you do not have the required experience and skills to work with such voltages. I assume no responsibility whatsoever for any damage caused by the usage of my circuits.

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Saturday, May 4, 2013

Two Single Ended 45 / 2A3 Amplifiers

Hi!

Two more 45 / 2A3 amplifiers finished. A two chassis amp (stereo with external PSU) using a directly heated driver tube, either a 26 or 10Y. And a single chassis amp with indirectly heated driver stage.




Both amps can be configured for using either a 45 or a 2A3 as output tube.






The two chassis amp uses Tango interstage and output transformers.




The PSU uses my usual bridge rectifier configuration with 4 6AX4 TV dampers working into a choke input filter.



The single chassis amp uses Lundahl interstage and output transformers.



This amp uses a bit simpler power supply with 2 6AX4 TV dampers.




The circuit is similar to the one of a 46 amplifier which I presented some time ago.




Some close up shots of the amps:











Best regards

Thomas




2 comments:

  1. how much does the 2 chassis version cost ? Thanks

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    Replies
    1. There are different options for the two chassis version. Please contact me by email or phone for pricing. The contact information can be found here:
      http://vinylsavor.blogspot.de/p/impressum.html

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