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RE: What tubes to use with this Interstage Transformers?




The C and R and L are in parallel with each other and together they constitute the load that's being driven by the source.

The load looks like it's in parallel with the 5050 ohm source to me. (the audio generator with 50 ohms of output impedance, in series with the 5000 ohm resistor constitutes the 5050 ohm source)

What does it look like to you?

BTW I ran the sim sweeping 20 to 20kHz with the generator having 5050 ohms output impedance with no series resistor and the way it's shown.

There was no difference in the results.

Either way, a large cap value causes the high frequencies to fall and a low inductance value for the choke causes the low frequencies to fall and all by the same amount at the same frequencies.

It doesn't matter if I start with a generator of high (5050)output impedance with no series resistor or a low output impedance (50) generator with a large value (5000) series resistor. It gives the same result either way.

Tre'
Have Fun and Enjoy the Music
"Still Working the Problem"



Edits: 09/05/16 09/05/16

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