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The Oracle Delphi Mk VII motor bearing is a state-of-the-art assembly designed to achieve the highest level of rotational accuracy and minimal vibration. It replaces the traditional two-bushing system with a dual tripod main bearing design using six precision surfaced PEEK screws arranged in two sets of three screws offset by 60 degrees. The thrust plate supporting the platter spindle's tungsten carbide ball tip is made of glass-filled Torlon, a non-metallic material, to reduce resonance and bearing chatter. This bearing design allows very precise calibration of the spindle holder assembly, minimizing micro-movements and vibrations. The motor is a specially selected AC synchronous motor with impedance-matched internal windings, driven by a precision frequency generator with military-grade capacitors to smooth the sinewave feeding the motor coils. This results in a vibration-free, stable rotation essential for high-fidelity audio playback. The bearing assembly is part of a comprehensive system including a two-piece platter assembly that facilitates belt installation and reduces platter resonances, and a Turbo Mk II power adaptor for optimized motor drive stability. The bearing and motor system are calibrated by ear to achieve the best equilibrium and sound quality.
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The closest alternatives on specs, description and the systems they turn up in, with the specs they share set side by side.
The Gyrodec LE mkII's platter weight is 14 kg (31 lbs) against the Delphi VII Motor Bearing's 4 kg (9 lbs), its platter material Brass against Glass, its weight 14 kg (31 lbs) against 30.9 kg (68 lbs), and its height 190 mm against 150 mm.
The WCS-5's weight is 11.5 kg (25 lbs) against the Delphi VII Motor Bearing's 30.9 kg (68 lbs), its width 370 mm against 363 mm, its height 270 mm against 150 mm, and its depth 380 mm against 475 mm.
The Double Matrix Professional Sonic's weight is 16 kg (35 lbs) against the Delphi VII Motor Bearing's 30.9 kg (68 lbs), its width 410 mm against 363 mm, its height 276 mm against 150 mm, and its depth 385 mm against 475 mm.
The LS-600WA's platter material is Aluminum against the Delphi VII Motor Bearing's Glass, its weight 9.73 kg (21 lbs) against 30.9 kg (68 lbs), its height 125 mm against 150 mm, and its width 418 mm against 363 mm.
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