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In the Forum: Melquiades Amplifier
In the Thread: Do the Filament Transformers Require a Center Tap?
Post Subject: More power is less heat and more efficiency. Do direct impact to sound.Posted by Romy the Cat on: 10/6/2017
Iraschwips, sorry did not see your post. Anthony is basically right, it does not matter for this specific application of you have center tap or not. It is also not really important if you connect filaments on 6C33C in series or parallel. There is a catch in here. If you connect parallel then you have a freedom to drive the first stage and second stage from the same fully loaded transformer or to drive a half of 6C33C if you would like to. There is a catch in this catch as well. If you chose to add or remove filaments at will then the voltage drop as you load the transformer more might think your voltage well below of what you need to have. From what I observed the audio filaments transformers are real crap.  You buy let say a transformer that should give you 6.3V and 10A but if you begin to load it more then you might discover that the current rating is very not really accurate. It might give you 6.3V at 6A but as you draw let say 9A then the voltage will drop to 6.0V. If you have just one channel then it is not a problem but then you have many channels and you have an option to wire the thing differently than you do want to have a lot of extra VA transformer. So, if I need 500VA then got for 1200VA transformer and have a lot of spare power in there. This is just a direction t think that I share. You should be of for one channel with a direct power matching..

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