You should be using bone conduction transducers instead of speakers

[millerhooks]

Speakers in the helmet are lame. Bone conduction transducers/exciters are much more effective.

[mertyildiran]

@millerhooks you might be right. Feel free to update the design and send a pull request. 😊

[millerhooks]

I'm gonna try to do that this weekend. Thanks for putting all this together!