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I am glad you enjoyed the steps I made. When adding more coils the vibrations will increase and that makes the music sound much better
Thank you for saying mine is the best one you found so far. You can make the sound louder by adding more magnets to your cup and increasing the amount of coil you use. You can also make sure to sand everything well and have a firm connection
Beats by Danny and Mike(DIY...View Instructable »