Speaker adapter rings (woofer and tweeter) for BMW vehicles

thingiverse

Here are speaker adapter mounts for BMW E46 front doors, designed specifically for JL Audio C3-525 component sets but easily adaptable to other speakers using included generic .stp files. The printed adapter rings secure the woofers in place, while factory mounting screws hold them firmly to the door card. In contrast, tweeters clip effortlessly into their mounts with a twist and are secured by integrated springs, reusing the same factory screws that attach them to the door cards. Both left and right mounts are identical, eliminating the need for mirroring. After a month of installation without any issues, these adapter mounts prove to be a perfect fit.