SOTA Cosmos Non-Vacuum Turntable  Ref: SOTTCOSPB

The Cosmos takes ultimate rigidity/mass damping in sub-assembly, arm mounting, motor coupling and bearing structure to new absolutes. The chassis is hung on a floating seismic platform of four-point spring suspension. The chassis utilizes a one-piece milled solid aluminum sub-assembly as the foundation. It is so effective that the platter, motor and arm block are mounted directly on the suspended sub-chassis. This provides an unvarying geometry between the motor and the turntable. The dampened sub-chassis and multi-layered platter isolate the arm and record surface from motor vibrations. The Cosmos utilizes Sota’s internally dampened, multi-layer 15-pound vacuum platter system with the Vinyl Format Mat. The dampened platter with Vinyl Format exactly matches the mechanical impedance of record vinyl - further optimized by its total inertness. The record, mat and platter function as a single, non-resonant entity. The Cosmos platter incorporates Sota’s inverted bearing assembly design, utilizing a polished sapphire thrust plate with zirconium bearing. The Sota self-sensing record-hold-down system uses a high-tech pneumatic sensing circuit to provide vacuum clamping and maintenance of exact low-pressure vacuum hold-down. The synthesized sine-wave drive 24-pole A/C stepper motor, designed for critical computerized motion use, has electronic speed control and speed change. The Cosmos cabinet has historically been made of critically-damped Fountainhead, by Nevamar, a beautiful and inert material, including the matching Fountainhead cabinet for the Pump/Power Supply unit. Sota's latest design enhancement will also feature a removable control cover for easy belt access. The Cosmos Vacuum Turntable includes the Cosmos Armboard, for universal tonearm compatibility, and a Reflex Clamp. The Cosmos Armboard is multi layers of acrylic, aluminum and lead in a constrained mode and high polished. The ultimate mechanical clamping system, the Sota Reflex Clamp assures intimate contact between the record and the mat over its entire surface. The clear beveled-seamed acrylic dust cover with milled aluminum tension hinges is available as an additional cost option. Specifications: Rumble: less than -60db unweighted (10cm/sec @ 1000Hz) Wow & Flutter: less than .04% RMS Suspension: tuned 4-point stretched-spring sub-chassis, 2.55 Hz frequency Platter: individually balanced 12 lb one-piece cast platter with internal damping, lead flywheel ring, Sota Vinyl Format Platter Mat, molded silicone vacuum lip and anti-static Groove Damper Mat Vacuum System: electronic-sensing, provides LP clamping vacuum pressure of 3.0 Hg, +/- 0.2 Hg Shaft: hardened steel, hand matched to sintered bronze sleeves Motor: 24 Pole A/C Stepper Motor Bearing: thrust pad; polished sapphire disc; thrust point: zirconium ball Transmission: belt driven Speeds: 33-1/3 and 45 RPM, electronically switchable with fine tuning Weight: 44 lb (20 kg) turntable only; 20 lb (9 kg) pump and motor unit Dimensions: 7-1/2"H (to top of dust cover), 20-1/4"W, 16-1/2"D The Cosmos may also be upgraded to the new top-of-the-line turntable, the Millennia.