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In this video we will analyze a passive high-pass and low-pass filter for an electric guitar. That is, two tone knobs, one for high frequencies, the other for low frequencies) Today we will again turn to the legacy of Leo Fender. This time it will be a circuit from the early 80s. At that time, Fender created at G&L, which he founded with his friend and colleague George Fullerton. By the way, G&L means George and Leo. So, there is one very interesting circuit that actually creates a two-band equalizer right in the guitar. In other words, this is a passive high-pass and low-pass filter, in English Passive Treble and Bass, abbreviated PTB. This video is for the same fans and enthusiasts as myself) If you liked the video - support the project - subscribe to the channel, like and leave a comment. Timecodes: 00:00 Introduction 00:40 A bit of history 02:03 Analysis of the PTB circuit 07:11 PTB circuit for Strat 08:30 Example of wiring the PTB circuit for Strat 09:30 PTB for Strat – sound examples 15:15 PTB circuit for a guitar with humbuckers 16:02 Example of wiring the PTB circuit for a guitar with humbuckers 16:57 PTB for a guitar with humbuckers – sound examples 21:42 Generalizing thoughts... 22:48 PTB for Les Paul 24:05 Supplement 25:20 PTB in guitars with two “knobs” 26:41 Conclusion Useful links: • Guitar circuit design – my playlist on guitar circuit design http://jablog.ru/blog/workshop/3999.html - link to article about PTB. If you use wiring diagrams from this article, be careful - there is an error!