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You're having convergence issues. Here's a PSPICE document that covers possible problems. https://www.electro-tech-online.com/custompdfs/2010/03/PSpice-ConvergenceOnly-12.pdf

Thank you Jules!

You can do this, if you bring the capsules out separately and combine in Post you can create the figure 8. Keep them in the same plane facing opposite sides and as close as possible. It will work.

Hi! I've got 4 tsb2590 laying around, would love to use three of them for a mid side dual output mic. I'm planning on use the p48 design as Jules has used in the ambi alice. How can I wire the two

Hi! I did built Jules ambialice and planned to build two but didn't sadly. Ive got four tsb2590 that I'm not using would you like to buy them or trade them with me? I'm located in Italy. I would love

Usually multiple package opamps are treated as individuals, each section being the typical +in, -in, out, V+ and V-. It does not represent the actual topology, but for simulation purposes, it does the

It sepends on the actual input impedance of the mic preamp. For a typical 2kohm input impedance, the capacitor should be 1.15uF for 70Hz cut-off. The actual response would be first-order, i.e. only

I literally took the .lib file provided by TI, which defines the SUBCKT and appended my SBCKT to it. Yes. My intention was to account for all the pins with the parameters already defined in the .lib

Got it, thank you much. Then, what should be the capacitor value to cut off audio at frequencies lower than 70Hz? Thanks again.

Hold on, did you also define the SUBCKT for OPA164x??? I presume you did since this is what TI provides. But I want to make sure. Basically, what you've done is to "call" two versions of the OPA164x

I'm having fun with variations on the OPA Alice circuit and would like to be able to model using SPICE in KiCAD. I found the model on TI's website but it doesn't have the correct subcircuit for a

In order to work, it takes disconnecting one of the internal 6.81k resistors inside the preamp, or to isolate it DC-wise, which is exactly what teh capacitor does.

A couple of years ago, Martin Kantola shared his simple P48 without a capacitor. Pure genius! Do a search for: One resistor P48 electret mic Different pros and cons compared to SimpleP48.

Tj=he role of the capacitor is to conduct AC signal whilst isolating DC. Not used, as in "not there" or as in "replaced with a short"? In the former case, very low signal, in the latter case, too low

The capacitor blocks the 48V to your mic. The 48V via pin 3 is limited to a safe voltage by the resistor. Smaller values will make a 6dB/octave HP filter in the audio range. Mostly nor desired.

Dear All, My questions are, In the simpl48 circuit, what is the role of the capacitor? What happens if it is not used? What are the results at different values? Many thanks.

This method is valid for unbalanced loads, but not for all types of balanced loads.. This is true only if the outputs are non-floating, which is the case of the typical Schoeps arrangement, or

Try this method shown in a Jensen Tranformer app-note: https://www.jensen-transformers.com/wp-content/uploads/2014/08/as048.pdf That will work for an active output microphone if you measure the

"Earthworks Homepage's M23R Spec : OUTPUT IMPEDANCE ? ?65Ω balanced (between pins 2 & 3)" That means exactly what it states, that the output signal is taken between pins 2 and 3, and the impedance