The fastest, easiest way of changing the EQ profile is to use George Norton's Headphones Toolbox. It's a powerful GUI tool that allows you to shape the EQ any way that you want to. And, it's completely free! Check it out.

If you feel like doing things manually, check the past revisions of this appendix for information on how to do that.

Official Ploopy Headphones Kit Assembly, Revision A

Part 1: Introduction

Part 2: Drivers

Part 3: Ear Cups

Part 4: Headband

Part 5: Amplifier, Cables and Conclusion

Appendices

Appendix A: Printed circuit boards

Appendix B: 3D-printed parts

Appendix C: Firmware Programming

Appendix D: Hardware

Appendix E: Tuning the EQ Profile

Appendix F: Frequency response graph interpretation

Appendix G: Official Ploopy Headphones Fully Assembled Version Instructions, Revision A

Legal

GNU Free Documentation License

Copyright (C) 2023 Ploopy Corporation. Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled "GNU Free Documentation License".