Converting Solid State to Tube Rectification on a Preamp
@salectric I might be lost in translations, but full-wave bridge superposes 4x(as signal is phase split by 180deg) half-waves thus pulsation is substantially smoother than to the conventional full-wave method or tube rectification. Literally saying that you’re dealing with 4 superposed half-waves as opposed to 2 superposed half-waves. Pulsation of bridge is nearly 4 times lower in magnitude and closer to the perfect DC. |
If you haven’t already, try some ultrafast/soft recovery HEXFREDs first. Much simpler, and may satisfy your desire for improved sound. ie: (http://www.partsconnexion.com/rectifier_diode_fred.html) &(http://www.partsconnexion.com/rectifier_bridge_hex.html) There’s a blurb on potential benefits, on this page: (https://www.caryaudio.com/upgrades-and-modifications/) |
I have a Blue Circle 21 preamp. Output tubes are 6sn7 with a solid state bridge rectifier. I want to replace that solid state bridge rectifier with a tube say 6x5. I will be using the existing 6v for the heater or running on battery for the heater. My questions are: 1) curently the unit is running on a bridge rectifier, if i convert it to tube, then it has to be half wave rectifier. To run the preamp at full wave, a pair of two 6x5 are needed? 2) if i do make that change to a single 6x5 tube rectifier, with the preamp does it matter if i do run it in a half wave or full wave?? 3) does anyone knows how to do this, if you can help me out?? Much appreciated!! |
