Meridian Dual-Pivot Arm

The Meridian Dual-Pivot Arm eliminates bearing friction entirely. Two pairs of opposed neodymium magnets suspend the arm assembly on both its lateral and vertical axes simultaneously, creating a bearing system in which no surface touches any other surface. The static friction coefficient is not low — it is zero. The arm floats in a magnetic field, and the only resistance to its movement comes from the air molecules that happen to occupy the space around the bearing gap. We have calculated this aerodynamic drag to be approximately 0.0003 dynes at typical tracking velocities. We do not consider it significant, but we disclose it because we believe in transparency.

The arm tube is fabricated from unidirectional carbon fiber, laid up at our facility in Macapá, Brazil, where the geomagnetic equator intersects the manufacturing floor at an angle of less than 0.4°. Carbon fiber is already magnetically inert by conventional standards, but the equatorial layup process ensures that the resin matrix cures under conditions of zero hemispheric magnetic bias. The resulting tube exhibits a measured hemispheric bias of less than 0.005 nanoTesla — a figure so low that our calibration instruments required a dedicated Faraday cage to confirm it.

Anti-skate compensation is achieved through an eddy-current mechanism: a small copper vane moves through a precisely calibrated magnetic field, generating an opposing force proportional to the arm’s lateral velocity. Unlike spring or thread systems, the eddy-current brake has no static friction, no breakaway force, and no elastic memory. It responds instantaneously and proportionally. Several reviewers have described the resulting groove tracking as “uncomfortably perfect,” a characterization we accept without comment.

The integrated headshell permits azimuth adjustment through a precision eccentric clamp, allowing stylus rake angle optimization to within 0.1 degrees. This level of adjustment is essential when operating with a frictionless bearing, as even minor azimuth errors that would be masked by conventional bearing friction become audible when there is, quite literally, nothing to hide behind.