Question, about impeadance?.

[Cree]

Ok if you have seen my question about MultiSim and that subject matter. The reason I am playing with a SIM program is to see if I can, or if it one can, mix and match pre-amps and power amps. I have found a few schematics I like the Pre-amps in. And some schematics I like the power amps in, and want to mix or match these together for my use or benefit. But the Sim program MultiSim is dead to me for this. LTspice will take me way in another direction, taking too many days to learn how to use it. I'm in a bit of a hurry, working against some personal dead-lines here. I have been on this site for a couple of 3-4 days, browsing, reading and searching and learning??? Yes, I have found many schematics that show similar designs and are already up and running. I have quite a few Schematics downloaded and studied to the max. But I have some other Ideas I want to incorporate that are not in there. Which will be other questions for later as I go.  So hear goes the question.  Looking at a schematic, lets say it is a 3 valve medium gain pre-amp with the third valve being a cathode follower feeding a james type tone stack. Now I have a Long tail Pair phase inverter feeding a Push-pull power amp, from another totality different amp schematic. What has to be math-ed out to meld these two together as far as Impedance and or coupling caps and / or things I do not know about yet? This may sound way to easy but I am just not sure of this, is it a cut and glue thing?

[sluckey]

is it a cut and glue thing?

yes

[shooter]

Beat me again!! 

for sims n mathing it out, start with the cut n paste parts, run the sim, tweak the values in sim, compare.  as you can see from different formulas each piece interacts with the other.  The main problem with sim results, you can't hear them.  so 100% efficient coupling might sound like sheet!

simmin things like harmonic content can get all touchy feely.

the great part of sims, you can easly "see" where things are wacked before you apply power or signal.  over time you get a sense for what sims well AND sounds like you expect.  sorta like using a scope with complex waveshapes.  Now go play 

[Cree]

Thank You both again Mr. Sluckey and Mr. Shooter.  Now question number two. I guess I should start another Topic.