Celestion TSQ2160 - 21″ Low frequency 8Ω

Technical parameters and comparison of the Celestion TSQ2160 21″ Low frequency 8Ω · Resonance frequency 30Hz · Power handling 5000W · Sensitivity 95dB · Xmax 18.75mm · Magnet: Neodymium

Loudspeaker Database
Celestion TSQ1535 - 15″ Low frequency 8Ω

Technical parameters and comparison of the Celestion TSQ1535 15″ Low frequency 8Ω · Resonance frequency 50Hz · Power handling 1800W · Sensitivity 95dB · Xmax 8mm · Magnet: Neodymium

Loudspeaker Database
Eighteen Sound 8NCX750 - 8″ Coaxial 8Ω

Technical parameters and comparison of the Eighteen Sound 8NCX750 8″ Coaxial 8Ω · Resonance frequency 111Hz · Power handling 600W · Sensitivity 95dB · Xmax 4mm · Magnet: Neodymium

Loudspeaker Database
Eighteen Sound 21NLW5300 - 21″ Subwoofer 8Ω

Technical parameters and comparison of the Eighteen Sound 21NLW5300 21″ Subwoofer 8Ω · Resonance frequency 31Hz · Power handling 3600W · Sensitivity 95dB · Xmax 15.3mm · Magnet: Neodymium

Loudspeaker Database

"North Korea could have the world’s largest rare earth reserves." This includes #Neodymium. Rare earth elements are an essential component for the arms industry and many #electronics .

For those who love earthly commodities, this makes an attack on #NorthKorea a temptation.

China has already secured many mineral resources in North Korea.

https://nationalinterest.org/blog/korea-watch/billions-ground-race-harvest-north-koreas-rare-earth-reserves-50137

#war

Billions in the Ground: The Race to Harvest North Korea's Rare Earth Reserves

When looking at contemporary geopolitics, often energy and related resource questions are  key in the struggle for influence amongst world powers, as energy can drive or amplify underlying tensions. Today, the attractiveness of traditional oil exploration loses ground with the emergence of new energies and technologies, often produced by “Rare Earths” and the elements they […]

The National Interest

Seltene Erden aus ausgedienten Dauermagneten wiedergewinnen ♻️ 🧲

Im @horizoneu geförderten Forschungsprojekt #Harmony entwickelt ein Team der #TUBAF einen pyrometallurgischen Vorbehandlungs-Schritt für das Recycling von Seltenen Erden aus #Magneten. Bericht vom Projekttreffen in Freiberg:

https://www.harmonyproject.eu/harmony-partners-meet-to-advance-rare-earth-magnet-recycling-freiberg/

#Neodymium #Magnets #Recycling #rareEarths

B&C Speaker 10CXN76 - 10″ Coaxial 8Ω

Technical parameters and comparison of the B&C Speaker 10CXN76 10″ Coaxial 8Ω · Resonance frequency 58Hz · Power handling 600W · Sensitivity 92dB · Xmax 6mm · Magnet: Neodymium Ring

Loudspeaker Database
Ciare NDI3.25 - 3″ Full-range 8Ω

Technical parameters and comparison of the Ciare NDI3.25 3″ Full-range 8Ω · Resonance frequency 77Hz · Power handling 80W · Sensitivity 83dB · Xmax 3.9mm · Magnet: Neodymium Ring

Loudspeaker Database
Finding A Way To Produce Powerful Motors Without Rare Earths

The electric vehicle revolution has created market forces to drive all sorts of innovations. Battery technology has progressed at a rapid pace, and engineers have developed ways to charge vehicles …

Hackaday