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Post by John on Jan 30, 2009 12:09:01 GMT -7
Does it just turn off two tubes....and leave the OT the same?
Or is the OT tapped differently when switched?
Anyone? Doc?
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Post by hogridr on Jan 30, 2009 12:29:51 GMT -7
These are questions answered by Doc in the "It's now available post" They may answer your question.
I got a question about the 1/2 power switch. Is it a "power" reduction to all or part of the circuit (power amp only maybe?) or does it isolate 2 of the power tubes like popping a tube off each side of a plexi 100 or twin?
Actually neither. In half power only two tubes produce output , but in a totally original way. DR.Z
Does that mean in a pinch if you just have a matched pair of 6v6's, you only need 2 of the 4 power tubes plugged in?
Nope need all four. That is how the circuit is successful at sounding the same just louder , all four are loading the OT so no impedance shift, all four are biased not hotter biased with only two, all four are keeping the B+ the same via Ohms Law and I R drop if that means anything to some of you hot shots, and to those of higher Electronic expertise the Miller Effect stays constant in Full/Half. And also I haven't done extreme time testing , but what I have show no excise wear on the half power pair. DR.Z
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