https://github.com/atoomnetmarc/16db-speaker-attenuator

A simple resistive divider network to dampen the output of an audio amplifier 16db.
https://github.com/atoomnetmarc/16db-speaker-attenuator

attenuator kicad noise-reduction pcb speaker

Last synced: 3 months ago
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A simple resistive divider network to dampen the output of an audio amplifier 16db.

• Host: GitHub
• URL: https://github.com/atoomnetmarc/16db-speaker-attenuator
• Owner: atoomnetmarc
• License: apache-2.0
• Created: 2021-03-10T18:05:11.000Z (over 4 years ago)
• Default Branch: main
• Last Pushed: 2021-05-07T10:05:15.000Z (about 4 years ago)
• Last Synced: 2025-02-03T20:49:59.527Z (4 months ago)
• Topics: attenuator, kicad, noise-reduction, pcb, speaker
• Language: HTML
• Homepage:
• Size: 1.13 MB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
A simple resistive divider network to dampen the output of an audio amplifier 16db.

## The problem

![](DS2_2018101203259.png)

See that spike at 6KHz? It was always there no matter what volume my Logitech Z-5500 Digital was set to. Very annoying.

The solution was this attenuator circuit that was fitted to each of the 5 channels of the amplifier. That peak at 6KHz is now 16db less annoying. Problem solved.

## Front

![](16db%20speaker%20attenuator-front.jpg)

## Back

With instructions on how to tune the final resistor values.

![](16db%20speaker%20attenuator-back.jpg)

## 1/2 3d printable enclosure

Print 2, they fit together. There are slots in which the pcb's fit.

![](16db%20speaker%20attenuator-0.5-box.jpg)

## The result

With 2 years of collected dust, but hey, it works :-)

![](16db%20speaker%20attenuator-dusty-proof.jpg)

[![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://opensource.org/licenses/Apache-2.0)