SSS #002 Filters | Real Bode Plots!

[rccolgan]

I got a new toy and trying some Bode plots measuring at the preamp-out. The speaker-out is connected to a Boss Waza Tube Amp Expander (reactive load)

Screen Shot 2021-06-22 at 2.30.04 PM.png

Equipment:

• Siglent SDS1104X-E 4 Channel Scope https://amzn.to/3gWKW3O

• SIGLENT SAG1021 Waveform Generator https://amzn.to/3xLHnnA

All my plotted CSV files recorded by my scope at every filter step here for your dissection: https://drive.google.com/drive/folders/ ... sp=sharing

I'm not really sure what to think yet. I am going to start comparing with the LTSpice simulations I did. At first glance, I think they are close however the highs seem a little more attenuated in the simulation and EQ shifted slightly.
My LTSpice repository: https://github.com/colganr/LTSpiceCircuits

Screen Shot 2021-06-22 at 2.45.54 PM.png

I hope this is a helpful insight into the amp. I'm sure data scientists here could take the information and apply speaker impulse response plots to further understand the resulting sound through the amp using different speakers. That's a little out of my wheelhouse at the moment but cool potential.

The gain/treb/mid/bass/etc. are the settings from the real SSS #002 when John Mayer played it. Remember that my high/low filter is wired reverse compared to the real SSS.

-Ryan