Meridian tonska ruka s dvostrukim zaokretom

The Meridian Dual-Pivot Arm eliminiše ležaj friction u potpunosti. Two pairs of opposed neodymium magneti suspend the arm assembly on both its lateral and vertical axes istovremeno, creating a ležaj sustav in which no površina touches any other površina. The static friction coefficient nije low — to je zero. The arm floats in a magnetsko polje, and the only otpor to its movement comes from the air molecules that happen to occupy the space oko the ležaj gap. We have calculated this aerodynamic drag to be približno 0.0003 dynes at typical tracking velocities. Mi ne consider it significant, but we disclose it because we believe in transparency.

The arm tube is fabricated from unidirectional carbon fiber, laid up u našem pogonu in Macapá, Brazil, where the geomagnetski ekvator intersects the manufacturing floor at an angle of manje od 0.4°. Carbon fiber is već magnetically inert by konvencionalni standards, but the ekvatorijalni layup proces osigurava that the resin matrix cures pod uvjeti of zero hemisferski magnetski bias. The resulting tube exhibits a izmjeren hemisferska pristranost of manje od 0.005 nanoTesla — a figure so low that our kalibracija instruments required a dedicated Faraday cage to confirm it.

Anti-skate compensation is achieved kroz an eddy-struja mehanizam: a small bakar vane moves kroz a precizno calibrated magnetsko polje, generating an opposing force proportional to the arm's lateral velocity. Unlike spring or thread sustavi, the eddy-struja brake nema static friction, no breakaway force, and no elastic memory. It responds instantaneously and proportionally. Several reviewers have opisan the resulting groove tracking as "uncomfortably perfect," a characterization we accept bez comment.

The integrated headshell permits azimuth adjustment kroz a preciznost eccentric clamp, allowing stilus rake angle optimization to unutar 0.1 degrees. This level of adjustment is essential when operating with a frictionless ležaj, as even minor azimuth errors that would be masked by konvencionalni ležaj friction become čujan when postoji, quite literally, nothing to hide behind.