Simple Explanation

A speaker designed so its magnets don’t interfere with nearby electronics like old TVs.

Concise Technical Definition

A speaker construction method that contains or redirects its magnetic field to prevent interference with sensitive electronics, particularly CRT displays.

Layman-Friendly Analogy

Like putting a fence around a magnet so it doesn’t mess with nearby gadgets.

Industry Usage Summary

Historically essential when placing speakers near CRT TVs to avoid screen discoloration; less critical today with LCD/LED displays, but still relevant in some professional and medical environments.

Engineering Shortcut

Magnetic field contained—prevents interference with electronics.

Full Technical Explanation

Magnetically shielded speakers are designed to contain or redirect their magnetic fields to prevent electromagnetic interference (EMI) with nearby electronic devices, especially old CRT (Cathode Ray Tube) displays, which were sensitive to stray magnetic fields. This shielding is typically achieved by adding a bucking magnet or ferrous shielding materials (like steel cups) around the speaker’s driver magnet to neutralize or redirect the magnetic field. While largely unnecessary with modern flat-panel displays, magnetic shielding is still useful in specific environments where sensitive measurement instruments, medical equipment, or legacy CRTs are used.