to ensure the integrity of the burn-in signals when played through modern streamers or DACs. The "2021" designation often refers to digital re-releases or specific rip versions available in high-fidelity communities that maintain the exact signal properties of the original disc.

Centered at 1500 Hz; targets resonances in chokes and capacitors. Tweeter Diaphragms

Centered at to stabilize the cone, spider, and moving coil junction. Crossovers

To minimize the annoying noise during the hours-long process, place speakers face-to-face (roughly 30cm apart) and wire one speaker out of phase