Here is a nice Tweed Deluxe 5E3 made by IT-11 Audio (see http://www.it11audio.com/deluxe).
This amp is great for blues and rock well known for its early breakup. What is the first stage involved in this saturate tone ?
Here is the schematic : deluxe_5e3_schem
Here are the voltage (DC and signal AC 1kHz) for the IT-11 Audio Deluxe :
No doubt that the cathodyne PI is the first to be overdriven :
Yellow trace : « input » : 12AX7 pin 7
Blue trace : « non inverting output » : 12AX7 pin8
« Clean » mode
Higher signal injected :
PI Spiced !
On this SPice model, PI enters saturation with a 40Vpeak signal (28VRMS). On my 5E3, it breaks up when input signal is 22VRMS … Real tube Vs simulation !
Here is the schematic simulated :
… and the non inverting output signal :
By the way : when you use your voltmeter to read the voltage at pin 7 of the 12AX7 PI, you read 17V or something like that : here is what happens (voltmeter impedance) :
Hi, what’s the name of the program and which program version did you used to simulate the 12ax7 tube?
Many thanks for your answer,
Gábor
Hello Gabor,
If your question is related to PI Spiced part, I use PSPICE. You could also use LTSpice (imho better, but I learnt PSPICE and I’m too lazy to migrate to LTSpice
)