using a Speaker Crossover network(woofer) to clean up a TWIN-T CPO's sidetone, reducing hf harmonics

[Chuck aa0hw]

USES a RADIO SHACK 3 way speaker crossover(woofer/BASS) that has added un-polarized electrolytic CAPs - to 'tune' it to peak signal at 700 hertz

REALISTIC 3-WAY UNIVERSAL CROSSOVER 40-1299

https://i.ebayimg.com/images/g/WIIAAOSwF39ilQiO/s-l640.jpg

SETUP

output of TWIN-T goes to a class D amp....output of class D amp goes to input of RADIO SHACK crossover network...output of WOOFER leg ...goes to input of laptop mic input jack and then into the screen recorder so you can hear the difference with// without the 'low pass' speaker crossover