Advice Needed

[grungeman91]

I'm trying to make a Williamson amp with 6l6GC tubes in the output stage. I'm trying to calculate the resistor values but I'm having trouble with the calculations. How can I go about analyzing the original amplifier so I can appropriately choose my resistors. I have this website to see the original design and I have the 6L6 datasheet. I plan to run in push-pull AB1 for 25 watts of output power.

http://www.clarisonus.com/Archives/A...0Amplifier.pdf

I would like this blog to be for advice only. I have been here several times asking for advice and half of the posts end up being people debating things rather than giving me advice. I need help.

[DF96]

"trouble with the calculations" is a bit vague. I assume you know about load lines, cathode bias, and understand what the datasheet is telling you? E.g. you know about gm, amplification factor and anode/plate impedance? You can calculate the gain of a triode stage, or estimate it from the graphs in the datasheet? If not, you need to do a lot of reading.

[payitforwardeddie]

I do a lot of reading.
I'm none the wiser.

I'm currently building two Mullard 5-20s and to get the extra watts (25-30) all I am doing is replacing the cathode resistors for the output valves with 10 ohm ww (for current measuring purposes) and negative bias for the grids. Maybe you could do the same. I think the design of the speakers will affect the amp more than mathematics.