The ideal mechanism for transmitting rotation in any vintage stereo turntable is a direct-drive phono motor. This highly advanced Pioneer turntable, the PL-51, is the first in its practical price range to use this ultra-slow-speed motor. The use of this motor means that the turntable's platter is directly connected to the shaft of the drive motor, making the PL-51 operate without the use of tension wheels or belts, as is the case with more conventional turntables. The rotation of the motor is the turntable's rotary motion, ensuring extremely quiet and stable turntable operation at all times. The motor used in the PL-51 is a brushless DC servo-controlled motor with a compact design. The turntable's rotation is then kept stable through the use of an electronic servo circuit, which uses semiconductors to significantly reduce vibration and flutter to less than 0.06% WRMS. Equally important, the PL-51's signal-to-noise ratio is better than 55 dB, an excellent result that compares favorably with any other turntable on the market. Then, in conjunction with the direct-drive mechanism, this Pioneer turntable also uses a highly sensitive and stable S-shaped tonearm, ideal for today's commonly used cartridges or for four-channel recordings. Complete with a solidly constructed wooden chassis and a sturdy base with large isolators, the PL-51 offers more performance and value than you ever thought possible in this price range.
New cover and Shure cartridge installed.
Motor and turntable:
Motor: Brushless servo-controlled DC motor
Semiconductors: 12 transistors, 19 diodes
Drive system: Direct drive
Speeds: 33-1/3 and 45 rpm (electronic speed change)
Speed control range: within ±2% (individual control for 33-1/3 and 45 rpm)
Wow and Flutter: less than 0.06% WRMS
Signal-to-noise ratio: more than 55 dB
Turntable platter: 310 mm (12-1/4") die-cast aluminum alloy platter
Weight: 1.4 kg (3 lbs. 1 oz.)
Type: statically balanced S-shaped tubular arm (with plug-in head cap)
Arm length: 221 mm (8-11/16")
Overhang: 15.5 mm (5/88 ")
Useful cartridge weight: 4 to 14 g
Additional features: Anti-scatter control; Side stabilizer; Direct-reading counter with stylus.
Power requirements: 120 V 60 Hz or 110, 120, 130, 220, 240 V 50/60 Hz
Power consumption: 5.2 watts
Dimensions (W x H x D): 480 x 185 x 410 mm (18-29/32" x 7-9/32" x 16-5/32")
Pioneer PL-115D turntable, after full service. Speed sensing auto return mechanism. The PL-115D uses a speed-sensing auto-return mechanism that ensures precise operation while smoothly returning the arm to its resting position. This mechanism works perfectly even when playing distorted discs.
The Vintage Pioneer HPM 1500 - Unique - is one of the famous vintage speakers and the pinnacle of the HPM series. The acronym initially inconsistently meant "High Polymer Mylar", later being consistently referred to as "High Polymer Molecular", especially in the US in the 1980s. This heavy 4-way bass reflex speaker was sold from 1977 to 1980 for $500. The Pioneer HPM 150 was not a typical high-end loudspeaker, but rather a milestone in loudspeaker technology due to two changes. It introduced, on the one hand, the use of new materials (carbon fiber) for the construction of speaker cones, and on the other hand, an innovative "high-frequency high-polymer film".
The Vintage Sansui 9090DB receiver is a beautiful and powerful model of this brand - output power: 125 watts per channel at 8 Ω. It is an "export" model with the possibility of 4 different input voltages (100/120/220/240V). It was the 1966th unit from the assembly line No. 81 in March 1977 (by serial number).