Description
The top class turntable of Exclusive, model P-3a. Only item pickup or shipping inside Japan is available. Item location is Japan. Perfect working condition. Specification: Based on the Exclusive P3, this stereo player system aims to achieve higher quality playback by modifying the arm and other details. The phono motor and bearing structure use a slotless, coreless linear torque DD motor controlled by a quartz PLL. In addition, the stable hanging rotor (SHR) bearing structure, which sets the center of gravity of the rotating shaft low, achieves rotational performance with a rotational unevenness of 0.003% or less and a rotational speed accuracy of 0.001%, which was impossible with conventional measurement methods. The SHR method is a bearing structure designed in reverse to the conventional method. First, the fulcrum is moved closer to the center of gravity, and the conventional bearing part is changed to the rotating side, which creates inertia in the bearing part during rotation and prevents lateral pressure from being applied to the shaft. In addition, the bearing clearance is kept to a minimum to prevent rattling, and sufficient torque and inertia of the turntable are set even for the load of the cartridge applied to the outer periphery of the turntable. The high torque motor with a dual rotor structure using a strong anisotropic ferrite magnet achieves high torque (10kg-cm) comparable to that of a record cutting device. In addition, the turntable has an inertial mass of 700kg-cm2, and the servo circuit has excellent transient characteristics, resulting in excellent startup characteristics (constant speed rotation in 0.3 seconds after switching on) and load resistance characteristics (1.5kg in terms of needle pressure), resulting in stable and highly accurate rotation characteristics. In addition to reducing the equivalent mass of the tone arm, the tone arm is equipped with a mass concentration method that concentrates the mass on the rotation axis and an oil damping adjustment mechanism. By adding reliable silicon oil damping to the arm axis, we have achieved a sense of volume in the low range and reduced intermodulation distortion. In addition, the amount of oil damping can be controlled according to the characteristics of the cartridge, and the damping can also be turned off. The tone arm is made of DRA & alumina ceramics, which pursues non-resonance. The vibration characteristics of the tonearm, which deteriorates sound quality, were grasped using computer analysis techniques such as FFT analyzers, and a new mechanism called DRA (Dynamic Resonance Absorber) was developed based on this data. The DRA is equipped with a sub-resonator consisting of a damper and weight with moderate springiness, and is designed to absorb the vibration by giving the arm resonance the opposite vibration. This vibration neutralization prevents the stylus tip from picking up extra components other than the sound groove, resulting in more accurate sound reproduction. The arm material is made of alumina ceramics. This material has about three times the specific rigidity of conventional aluminum, reducing resonance. The quick stop mechanism combines an electronic brake that applies a force to rotate the motor in the opposite direction using an electronic circuit, and a mechanical brake that stops the rotor rotation using a plunger. The motor and tonearm are fixed to a 12kg base made of laminated aluminum and barium sulfate, a high-density material. In addition, the base is completely floated from the cabinet, and a coaxial suspension vibration-proof structure is used to isolate the sound pressure from the speaker and the vibration from the floor. A triple-layer insulator is used to enable a high feedback margin. The 25 kg body is supported by an oil-damp piston structure using a 62 mm spring, and special rubber is used to absorb the spring surging. The natural frequency of the insulator is set to 5 Hz or less, which is lower than the natural frequency of the tone arm, and combined with the vibration-proof structure of the coaxial suspension, a high feedback margin is obtained. The cabinet is designed to combine a cabinet with a natural wood grain finish of Brazilian rosewood and a dust cover made of tempered glass that is excellent at preventing feedback. The power cord is an extra-thick power cord made of oxygen-free copper with high electrical conductivity, which reduces loss in the wire and significantly improves non-linear distortion. In addition, clear polarity indication is applied to achieve higher sound quality. Please check business term before bidding on my item. ///////////////////////////////NOTE: 1. Dont share personal information or ask me contact outside eBay as well as offer me purchase outside eBay. If you want to buy item, press buy it now or make offer button if you want to offer your best price. 2. I only ship item via EMS or Fedex, I dont accept ship item via sea way. 3. Please make your payment within 3 days. 4. If you have any question about item, feel free to ask me before bidding. Generally, I dont response to question ask about what is your best price, you can press best offer button and input your best price. If there is no best offer button then item is fixed price. 5. If you want to find any item related to audio turntable, audio vintage or amplifier, and you can not see in my listing, please ask me via message, I can help you find it. 6. If you want to know about me, you can search on google with key word Otomon Laboratory //////////////////////////////
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