These DIY modifications will make your antique phonographs sound incredible again.

Jack Stanley and Brett Hart reveal a revolutionary method for restoring Edison diamond disc reproducers using coin holders. Their innovative technique transforms the sound quality of century-old phonographs by addressing "reproducer arthritis" and bringing back vibrant audio reproduction that rivals or exceeds the original factory performance.• Coin holders designed for collecting can be repurposed to revitalize Edison diamond disc reproducers• The modification requires cutting and fitting the coin holders alongside appropriate gasket material• Leaving a controlled air leak in the reproducer enhances bass response and works as a tone control• This technique works on multiple types of Edison reproducers including B, C, H, and K models• The restored reproducers produce dramatically improved sound quality with enhanced clarity and bass• Materials needed are inexpensive – approximately $5 for enough coin holders to rebuild multiple reproducers• Both inventors are available to help collectors attempt this restoration ([email protected] and [email protected])• Special tribute to Eric Reiss, author of "The Complete Talking Machine," who recently passed away at age 71