# ecualizador v1

## Description

Stereo 3‑Band Active Audio Equalizer and Mono Preamplifier using TL072 and LM386 with Right‑Angle PCB‑Edge CUI SJ1‑3535NG TRS Jacks for Jack Sensing and Routing

## Project Details

- **Owner:** gatowo
- **Created:** 12/24/2025
- **Last Updated:** 1/8/2026
- **Visibility:** Public
- **License:** https://creativecommons\.org/licenses/by/4\.0/
- **Jack Orientation:** right\-angle PCB\-edge
- **Switch Count:** tip\-and\-ring
- **System Architecture:** flowchart TD     A\["Input Jacks"\] \-\-\> B\["Stereo\-to\-Mono Mixer"\]     B \-\-\> C\["Three\-Band Filters"\]     C \-\-\> D\["Summing Inverter"\]     D \-\-\> E\["LM386 Power Amp Stage"\]     subgraph PWR\["Power Rails"\]         V12P\["\+12 V"\]         V12N\["\-12 V"\]         V5P\["\+V \(LM386\)"\]     end     V12P \-\-\> C     V12N \-\-\> C     V12P \-\-\> D     V12N \-\-\> D     V5P \-\-\> E
- **Domain:** Consumer Electronics
- **Same Jack Model:** yes
- **Operating Voltage:** 12V
- **Power Requirements:** Battery

*The full schematic, PCB layout, bill of materials, and interactive design are available at [https://flux\.ai/gatowo/ecualizador\-v1\~ug](https://flux.ai/gatowo/ecualizador-v1~ug).*

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*Generated from [https://flux\.ai/gatowo/ecualizador\-v1\~ug](https://flux.ai/gatowo/ecualizador-v1~ug)*