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effective load resistance


 
11/28/2003 2:12 PM
jollynator
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effective load resistance
hi guys, i was looking in my rc-30 when i noticed that some tubes have a listing of effective load resistance in class ab. this is not mentioned in class a. why is this? it is listed for two tubes. what would it be for four? and also, how is it calculated? thanx! jon
 
12/1/2003 6:04 PM
dpcoyle
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I was looking at some tubes this weekend that did have load resistance listed for class A.  
 
Generally, you would halve the load for paralleled pairs of tubes.  
 
Dan
 
 
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12/1/2003 8:26 PM
jollynator
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thanks dan, i am currently buiding my first, and am not sure how to hook up the ot. (the ax84 p1 is the amp). hammond 125se is the ot. thanks again. jon ps i figured i would need to know this stuff, since i will be building several amps from now on, but there is nothing in the rc30 tube manual that covers this in depth.
 
12/2/2003 3:42 PM
dpcoyle
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Try all the Z values 3K and above and see what you like.  
 
Dan
 
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