Electronics Questions & Answers ← browse Q&As

In-Ears headphones use magnetic dynamic drivers. If you bring the in-ears close to an electronic device that releases magnetism with a 29" CRT TV (coils, speaker) turned on, will this TV cause demagnetization or permanent loss of performance of these in-ear drivers?

??? question

Technically, it is "possible" for a weak magnet to be permanently weakened by a stronger opposite magnet. (There are expensive instruments which allow to remagnetize permanent magnet, but that is not the question, ... and the instrument is expensive.)

In your case, check the manufacturer warnings. Or, experimentally, magnetize an iron nail (becoming a very weak magnet), and after confirmation that it is magnetic, place it near the CRT TV. Then check back if the nail is still magnetic, with the same strength (attracting a nickel, as example). If so, we can conclude that a neodymium magnet won't be influenced negatively either.

Inears KZ EDX Pro and KZ EDC Pro use dual magnetic dynamic driver (it has magnet inside it). What is the strength of the magnetism of the 29" CRT TV and 4 2.5" laptop HDD units? When turned on, do they emit enough magnetism to demagnetize and cause permanent loss of performance in these In-Ears?

HDD are the ones who need protection, provided by the metallic box shielding them in (and out), they are surely not a problem. For the CRT TV, that depends on the CRT maker. You may worry too about things like microwave oven, large electrical vacuum cleaner, or any unshielded current transformer and high voltage AC transmission line. But if there was a problem with small "In Ear" devices, that would have come out already, a long time ago, imvho.

TV CRT 29" and hdds next in-ears headphones cause demagnetize in drivers of in-ears?

?? doubt