ADC Accutrac 4000 (1976)
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Its father was a turntable. Its mother was a computer. That's how the advert introduced the Accutrac 4000. Are you ready to hear the selection on a record in any order you like, as often as you like, and skip the ones you don't like. Even by remote control. It's a marriage of solid-state integrated circuitry, infra-red electro-optics and the latest in direct-drive engineering. The result: The Accutrac 4000, the most accurate, reliable, noiseless turntable ever invented. And it even lets you re-arrange selections on a record to hear them in the order you want. The Accutrac 4000 reaches new lows. Wow and flutter are down to a completely inaudible 0.03% W.R.M.S. Rumble, -70dB (DIN B). Tracking force, a mere 3/4 gram. And tonearm reso- nance, the ideal 8-10 Hz. A direct-drive motor brings the massive die-cast platter to full speed instantly. And keeps it there with the help of electronic sensors which adjust for power fluctuation. So now, instead of just listening to a record, you can re-arrange the playing order of the selections, repeat them, even skip the ones you don't like. Just by pushing a button. Suppose you want to hear selections 5, 3 and 7. Simply press the buttons marked 5, 3 and 7. In fact, you can pre-set the sequence with any combination of up to 24 commands. And if you don't want to leave your chair to give the orders, beam it in by cordless remote control with the transmitter and receiver. Because the tonearm is electronically driven, not manual, you never risk dropping it accidentally and scratching a record, or damaging the stylus. The reason for this miracle is the minute infra-red scanning beam in the head that reads the surface of the record and directs the tonearm to follow your instruction.
DENON DP-52F (1982)
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To function as an essential part of a true high fidelity reproduction system, a turntable must maintain sufficiently stable rotational performance in spite of load changes taking place during the course of play. To accomplish this, DENON's DP-52F use as drive motor , the core of the rotation system, a highly sophisticated AC servo motor. This motor is virtually free from "cogging" and thus deliver a high signal-to-noise ratio in addition to the highly precise rotaion. DENON's Quartz Phase Locked Loop offers extremely low wow and flutter even in the presence of warped records and large variable loads. DENON's Dynamic Servo Tracer system, working in concert with a Denon high-precision, ultra-low mass tonearm effectively supreses resonances while providing the proper damping for the widest variety of cartridges. Damping, anti-skating and tonearm lift/located are all applied through microprocessor-controlled non-contact electronics. Technical data: Type: 2-speed Fully Automatic | Motor: Quartz Direct-Drive AC-servo | Platter: 30cm diameter, Aluminum Die-Cast | Wow & Flutter: 0.01% WRMS | Signal-to-noise ratio: 78dB (DIN-B) | Tonearm: Dynamic balance type, light weight straight tonearm | Effective tonearm length (total length): 244mm | Dimensions: 455x130x424 (WxHxD) | Weight: 9kg
DENON DP-59L (1984)
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This record player was developed using all of DENON's turntable player technologies, beginning with broadcast station players to the DP-100M . The bidirectional servo DENON quartz installed in the DP-59L realizes a quick response not only when the rotation is delayed but also when it is too fast. This stabilizes the specified speed when changing from 45 rpm to 33 1/3 rpm, and also provides a smooth braking effect for the electronic brake. Ultra-low frequency noise caused by warping and eccentricity of the record lurks in the ultra-low range, mainly consisting of about 6Hz or less. This ultra-low frequency component can be prevented from reproducing noise by setting the low-frequency resonance frequency (fs: about 10 Hz) by using a light-mass arm. However, when a high-compliance cartridge is used, the body of the cartridge itself will vibrate due to the warping and eccentricity of the record near the low-frequency resonance frequency, and the output will be large. Consideration has been given to all vibrations, such as the large arm base, large insulator, 7 mm thick turntable , and 5 mm thick turntable sheet. The platter is 32.5 cm in diameter, 7 mm thick, and weighs 2.2 kg. The drive motor uses an AC servo motor with a low center of gravity design. The shaft of this motor has a thick diameter of 10 mm, which firmly supports the heavy turntable. The servo circuit uses a bidirectional servo DENON quartz. DENON quartz uses a magnetic recording detection method, which is a high-precision speed control mechanism, to maximize the phase control of the quartz PLL circuit. This method detects 1,000 magnetic pulses on the outer circumference of the turntable, where speed changes are most easily detected, and checks them 555.55 times per second (at 33 1/3 rotations), making it the most precise mechanism for rotation control. This high-precision speed detection and phase control using quartz oscillation suppress small variations in rotation speed while achieving a rotation accuracy of 0.002% rotation speed deviation. The tone arm uses a dynamic servo tracer. The electronic Q-damp mechanism is installed to eliminate the increase in crosstalk and ultra-low frequency noise caused by this. The Q-damp mechanism and the light-mass arm work to eliminate the effects of warping and eccentricity of the record. The arm uses a newly developed light-mass straight arm. The arm pipe lead wire uses Litz wire made of 11 twisted oxygen-free copper wires, and the cross-sectional area is 3 to 4 times larger than conventional wires, keeping the internal resistance low. Equipped with a pitch control function, the speed can be changed up to ±9.9% with a 0.1% pitch. The cabinet is made of heavy-weight wood with a height of 11 cm. The exterior has a glossy rose finish. A non-contact, purely electronic anti-skating mechanism is used
DUAL CS 731Q (1981)
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The breakthrough for audible improvement - ULM tonearm, Quartz/PLL direct drive. Most controls of the CS 731Q are located on the front panel. This allows all turntable functions to be controlled vibration-free with the cover closed. On the CS 731 Q, the pitch adjustment can be read on an opto-electronic analog display. A + or - in the display unit indicates whether the actual speed is leading or lagging behind the nominal speed. Quartz-controlled direct drive. This accuracy is generated by a high-precision quartz with an oscillation frequency of 4.608 MHz. The target values for 33 rpm and 45 rpm are derived from this frequency through electronic division. A 200-pole frequency generator coupled to the motor supplies a proportional frequency for each motor speed, the actual value. This actual value is compared in a PLL circuit with the target value supplied by the quartz and synchronized in phase. The Dual tonearm is another special feature of the 731Q. This is hidden behind the abbreviation U.L.M. and can be considered a minor sensation: U.L.M. stands for "Ultra-Low Mass." Its developers have made the arm considerably lighter. Together with the Ortofon ULM 60E system developed exclusively for Dual, it has a fantastically small effective mass of just eight grams.
FISHER MT-6360 (1980)
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The MT-6360 "programmable, full automatic, infrared remote control" turntable was introduced by Fisher in 1980. It is actually a rebranded Sanyo TP 880, Fisher being a Sanyo brand by this time. It is not really programmable, but it does have an infrared sensor next to the cartridge which can "read tracks" on the vinyl allowing you to select a track you want to listen. This can also be achieved with the use of the supplied remote control. Technically the turntable features a DC Servo Direct Drive motor, strobe light for speed adjustment and the tonearm came factory equipped with a Audio Technica MG-S100 cartridge. (Wow and Flutter is 0.035% and rumble is -70dB). The MT-6360 was sold both as a separate unit but also as part of various Hi-Fi system. When sold separately it was named MT-6360 and it came with it's own remote. When it was sold as part of the Fisher 9000 System it was called the MT-9000 and it was intended to be remote controlled through the CB-9000 control center of the system and it's M-9000 full system remote control. Size of the unit is 440x135x385 mm, weight is 8.2 kg and it was originally sold for 798 DM in Germany.
FISHER MT-Z1 (1989)
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The Fisher MT-Z1 is a high-end turntable with belt drive and separate control unit. It has a subchassis made of cast stone, which rests on four springs on a wooden frame. The drive motor uses a newly developed three-phase brushless FG servo motor. The power supply control section, which is responsible for the rectification and operation of the AC power supply, is designed to be separated from the main body. This suppresses interfering vibrations in the rotation system and the adverse effects of the power supply section on the drive mechanism. The tone arm uses a high-precision gimbal support tone arm. While the MT-Z1 was introduced in 1989 under Sanyo ownership it is actually based on the C.E.C. ST-930 from 1989. Made in Japan of course. Specifications: Motor: DC Servo | Drive System: Belt | Wow & Flutter: 0.02% | Platter Diameter: 320mm | Platter Weight: 2.3kg | Tonearm Lenght: 222mm (Straight arm) | Dimensions (WxHxD): 485x350x145 | Control Unit (WxHxD): 100x220x85mm | Weight: 9.61Kg
KENWOOD L-07D (1979)
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No other turntable can come as close to the theoretical limit of 100% reproduction of recorded musical signals. To get that performance, Kenwood had to invent the turntable all over again. Kenwood engineers found that one of the biggest obstacles to perfect sound was loss of energy caused by vibrational movement where the stylus meets the record groove. So, Kenwood designed the L-07D with a closed, ultra-rigid motor-platter-tonearm loop to virtually eliminate unwanted vibration. To further cancel out resonance it was formed a low-mass tonearm from alternating layers of aluminum, carbon and boron. Then the quartz-PLL, speed-phase double servo control motor received a 12-pound platter to give an extremely high moment of inertia for superior speed accuracy. Then all the workings were mounted in a 68-pound base of resin concrete bonded to mahogany in a cast aluminum frame to virtually eliminate resonance across the entire audible spectrum. The whole system is controlled by a separate power supply and logic control for the L-07D. An external Dynamic Phase Compensator that automatically regulates rotational accuracy and islotes the cartridge from electrical interference. Technical data: Type: 2-speed Fully Automatic | Motor: Quartz PLL Direct-Drive | Platter: 33cm diameter, Aluminum Alloy Die-Cast Laminated with Duralumin (5.5kg) | Wow & Flutter: 0.02% | Rumble: better than -94dB | Tonearm length: 245mm | Dimensions: 555x160x470mm (WxHxD) | Control unit: 130x110x356mm (WxHxD) | Weight: 31kg
Korvet 038 Stereo (1983)
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The Korvet-038 Stereo turntable was produced by the Kirov “Ladoga” plant starting with 1983. It features an ultra-low-speed DC motor with electronic control and a tonearm with viscous dynamic damping in both horizontal and vertical planes. Tracking force and anti-skating are adjustable from 0 to 25 mN, ensuring even groove pressure. It was designed by Anatoly Likhnitsky. The large spherical damper contains glycerine with a smaller internal sphere that floats inside it; vibrations transmitted through the tonearm are absorbed by the interaction between the two spheres and the fluid. It is fitted with a magnetic GZM-018 Korvet cartridge with a beryllium cantilever, reducing moving mass to 0.8 mg, and an elliptical diamond stylus. The turntable includes a record cleaner and a photo-electronic auto-stop with microlift. Specifications include 33/45 rpm speeds, 0.1% wow and flutter, −70 dB rumble, 20 Hz–20 kHz frequency response, 0.8% harmonic distortion, dimensions of 485 × 225 × 370 mm, and a weight of 12 kg. From 1987, it was renamed Korvet EP-038S under GOST 11157-87.
KYOCERA PL-910 (1984)
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The PL-910 turntable was the ultimate expression of Kyocera's anti-resonance fine ceramics technology. The PL-910 is not only the top of the Kyocera turntable line; it will stand in audio history as one of the finest turntables ever built. It incorporates the most up-to-date technology and materials to accomplish the age-old goal of all turntable designers: rotational stability and resonance-free per-formance. Consideration has been given to every last detail in the manufacture of this masterpiece, down to the actual construction materials themselves. The platter, for example, has been manufactured of Fine Ceramics to be precise, alumina-ceramics-proven to possess hardness qualities close to those of diamond-and vibration-attenuating characteristics far superior to conventional materials such as ordinary aluminum. This Fine Ceramics platter is placed in full planar contact with an aluminum sub-platter of a different resonance frequency, thereby dramatically reducing unwanted resonances. Fine ceramics is used further in the platter spindle and the thrust bearings of the spindle. These extremely hard thrust bearings are capable of supporting the heavy platter without excessive wear, creating an ultra precise pivot point for extremely smooth rotation. The base chassis of the PL-910 is made of Ceramic Compound Resin (CCR) to isolate the turntable itself from external vibration (mechanical and acoustical feedback). The "howling" normally experienced in the presence of loud signals from large loudspeakers is unheard of in the PL-910. Although the PL-910 is equipped with a heavily damped, powerful DC-servo brushless motor (Matsushita DAX-10A1PM), the actual drive system is via belt to remove any last possible doubt concerning rotational stability. Ceramic Compound Resin (CCR) base chassis successfully isolates external vibration. A high-purity alumina-ceramics platter mounted in full planar contact with an aluminum sub-platter with different resonance characteristics creates an effective resonance barrier Dua-suspensyon system separates the turntable and tonearm from the sub-chassis to isolate any possible externa sources of vibration. DC-servo brushless motor belt-drive system. Heavily-damped motor avoids the creation of internal vibrations. Self-illuminated strobe with on/off switch. 4mm-thick transparent acrylic cover. Four types of optional arm bases to mount most high quality separate tonearms. Specifications: Type: Belt-drive, double float system | Revolutions per minute: 33-1/3. 45rpm | Platter size, etc. (Main-platter): Made of almina-ceramic, 3.6kg 300mm in diameter, 17.2mm high (Subplatter): Made of aluminum, 1.4kg , 260mm in diameter | Wow and flutter (WRMS, JIS): 0.025% | Signal-to-noise ratio: (DIN-B) 78dB, (JIS) 60dB | Dimensions: 455 (W) x 190 (H) x 392 (D)mm | Weight: 20 kg | Manufactured by Micro Seiki
OPTONICA RP-9100 (1981)
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The RP-9100 is a Direct Drive Stereo Turntable with Quartz Double-Locked Motor, APMS (Automatic Programmable Music Selector) and Remote Control. This revolutionary turntable combines maximum audio fidelity with unprecedented operational versatility. Performance is optimum with a quartz double-locked servo system, Mono Torque DC coreless platter motor, direct drive, separate arm motor and J-shaped tonearm. APMS (Automatic Programmable Music Selector) then sets the listener free to program song playback order, while a full-function remote control unit and auto record size-speed selector maximize convenience. Extra advanced features include a special sensor arm, a digital speed accuracy display and soft-touch front-panel controls. It was available in silver or brown while the US market version was called RP-9705. Technical data: Type: 2-speed Fully Automatic with APMS | Motor: Quartz Direct-Drive | Platter: 31cm diameter, Aluminum Die-Cast | Wow & Flutter: 0.028% WRMS | Signal-to-noise ratio: 68dB (DIN-B) | Frequency response: 10-35,000Hz | Cartridge: MC, XL-333E | Tonearm: Statically balanced, tubular with APMS Sensor | Effective tonearm length (total length): 227mm | Dimensions: 480x135x440 (WxHxD) | Weight: 11kg
PHILIPS AF977 Automatic (1978)
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Philips turntables, with all their electronics, from sensor buttons to quartz control to photoelectric limit switches, are difficult to compare with others. The belt drive of Philips turntables protects the turntable from disturbing vibrations of the motor. And the Direct Control technology regulates the speed directly on the turntable axis. From a hi-fi perspective, Belt Drive Direct Control offers the best of both worlds: high rumble clearance and accurate speed. With a precision and durability that can only be achieved with very expensive direct drive systems. The absolute top model of the Philips Electronic HiFi generation is the AF 977 Automatic. From the quartz PLL control to sensor keys, digital strobe display, and photo-electronic limit switch with full electronic precision. Fully automatic, also manually operated. Subchassis suspension. Precisely readable stylus force scale. In short: HiFi progress that can be heard - and seen. Technical data: Belt Drive with Direct Control Quartz PLL | Wow and flutter DIN 0.05% WRMS 0.025% | DIN B Rumble-to-noise ratio 73 dB | Platter diameter 310 mm | Needle tracking force adjustable 0.75-3 p (1p 10 mN) | Cartridge: Super M 412 İl RETMA 1/2" | Tonearm length 215 mm | Dimensions 42 x 14,1 x 34,8 cm | Weight 6kg | Original sale price: 845 DM in Germany
PIONEER PL-L7/PL-90 (1984)
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The PL-L7 is made for the purist. There are some good reasons why the PL-L7 makes this possible. One is a tonearm made from alumina ceramics, another is the Pioneer DRA (Dynamic Resonance Absorber), a combination of a viscous damper and weight, to eliminate resonance. To ensure that records are played with extremely low noise and wow and flutter, a coreless direct-drive DC-servo motor controlled by a precise quartz-PLL servo system to provide cog-free and ripple-free smooth torque generation is installed. With the cabinet and cabinet base separated internally by insulators and the entire unit supported by large insulators on the base itself, the player has an effective Double-Floating configuration. The PL-L7 was first introduced in 1984 in Japan while the North-American market model was the PL-90. This one had "shiny looks", marketed as "Reference Turntable" and it was presented in the Pioneer Elite series brochure. Specifications: Drive System: Direct Drive | Motor: Coreless, Quartz-PLL, DC-servo motor | Turntable platter: 36cm | Wow & Flutter: 0,018% | Tonearm type: statically balanced aluminum-ceramics straight tonearm with DRA | Effective Arm Lenght: 282mm | Dimensions (WxHxD): 596x215x434mm | Weight: 17,3kg
Sansui XR-Q7 (1980)
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The XR-Q7 from Sansui is a full auto direct-drive turntable with exclusive silent synchrotor system. The Silent Synchrotot System utilizez a second rotor, essentially the same design as the drive motor, located directly underneath the drive motor. This second rotor is synchronized with the main drive motor, but rotates back and forth in either direction in response to speed change commands sent by the servo to the drive motor, thereby cancelling any vibration that the torque variations may cause before they can affect the cabinet. The coreless linear-drive motor utilized by Sansui achieve an amazing wow/flutter of 0.009% and a signal-to-noise ratio of 80dB (DIN B). The Quartz-Servo system maintains perfect speeds by controlling the direct drive motor. The XR-Q7 is equipped with Dynaoptimum Balanced Tonearm of a straight design, with an integral headshell fixed to the tonearm tube to minimize mass and improve trackability. All automatic operations of the tonearm are controlled by a completely separate motor and the built-in microcomputer supervises all motor functions. Technical data: Type: 2-speed Fully Automatic | Motor: Quartz-Servo Direct-Drive Silent Synchrotor | Platter: 330mm die-cast aluminum alloy | Wow & Flutter: 0.009% | Signal to noise: better than 80dB (DIN-B) | Tonearm length: 245mm | Cabinetry: chip board base with anti-howing insulators and hinged dust cover | Cartridge: SV-101 | Dimensions: 490x180x430 (WxHxD) | Weight: 11kg
THORENS concrete (1988)
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The legendary "Concrete drive" was the work of a young designer from Switzerland. Modelled after the basic shape of a record, the "Concrete" not only wowed visually, it also offered a convincing technical performance. The base made of concrete and the leaf-sprung sub chassis carved out of an aluminium block damped impact sound and vibrations. This audiophile sculpture was mainly equipped with the SME 3009 S2 tonearm. Another special feature: the 2.7 kg platter made of mineral glass. It is driven by the 24-pole synchronous motor known from the 300 series to a 1.5 kg aluminium sub-platter. It is electronically based on the TD 320 / TD 520 series with a concrete base and it's a great sounding turntable. It was built in limited numbers, aproximately 200 to 350 units. |
Thorens Prestige (1983)
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THORENS turntables are famous throughout the world for their excellent sound quality. For its 100th birthday, Thorens created another monument with the "Prestige" the result of both step-by-step refinement of proven solutions and a commitment to a tradition based product philosophy. It was first presented to an astonished audience at the Berlin radio exhibition in 1983. This is a no compromise transcription tuntable of the highest order without gadgets where the emphasis is placed on sound quality. Obviously the PRESTIGE incorporates the renowned THORENS belt drive/floating chassis system. The servo controlled two-phase synchronous motor, rigidly mounted on the main fixed chassis, drives the turntable by means of a long soft rubber belt. Possible motor vibrations are thus isolated from the turntable and also from the two tone-arms on the suspended chassis. The mass of the turntable (over 8 kg including the centre stabilizer) accounts for the absence of any wow and flutter. The large turntable (diameter 340 mm, height 100 mm) is absolutely resonance free and contributes. in a decisive manner to the stability of the sound image of the PRESTIGE. The outer wall of the turntable is filled with iron granules, thus preventing any resonance of the casting material. A truly unique THORENS solution. The turntable shaft is a very substantial 15 mm diameter precision machined component rotating wear free in an oil bath. Both the main fixed chassis and the floating chassis are constructed using multiple layer technology designed to eliminate undesirable resonances. All controls are located on the fixed front panel, the floating chassis supporting the turntable and the tone-arms decoupled by means of four point gravity controlled suspension. Two large arm mounting platforms enable almost any tone arm to be used. The height of each mounting platform can be separately adjusted and each tone arm has its own electrically operated cueing device with front panel mounted lift/lower control. The nominal speeds are quartz controlled and constantly monitored on the turntable itself. The underside of the platter bears a magnetic track. A meander conductive track forms the counter part to the tachogenerator, and an electronic control circuit compares the rotational speed of the platter with the nominal speed. The slightest deviations are registered and corrected. Measurement data alone does not determine the final sound quality of a turntable. Whether this initial link in a system produces ultimate sound quality or not depends on the precise selection of suitable materials, on individual tuning, and subsequent harmonisation of all component parts. The PRESTIGE makes use of noble materiais only, including a number of Gold plated parts. A true durable realisation of the PRESTIGE. THORENS have built quality turntable since the invention of the record itself. Technical Data: Drive system: 1 speed belt drive | Motor: 16 pole 2 phase synchronous motor | Speeds: 33 1/3, 45, 78 RPM | Motor speed control: quartz controlled electronic 2 phase generator | Pitch control: ≥6% | Turntable platter: 8.1 kg complete with mat and goldweight | Platter diameter: 34 cm | Wow and Flutter according to DIN 45507: ≤0.02% | Rumble unweighted according to DIN 45 539: >54 Rumble weighted: >70dB | Power requirements: 2x19V-200 mA | Mains voltage: may be connected to any line voltage using the appropriate THORENS AC adapter | Dimensions: 612×510×280mm | Weight: 55 kg
YAMAHA GT-2000 (1982)
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In 1982, the year that saw the debut of the CD, Yamaha's turntable lineup, up to then always following a high technology course, saw a new model that suddenly took analog back to its origin. This was the GT-2000 large heavyweight player, taking the GT part of its name from the first two letters of the words "Gigantic & Tremendous." A turntable embodying the GT (Gigantic & Tremendous) concept of achieving high rigidity and resonance-free play through absolute mass. While its predecessor PX series had features like a state-of-the-art symmetrical linear arm and feather touch full auto mechanism, the new GT-2000 was a simple manual player with a conventional S-shaped long arm, not even having pitch control. With a density and accuracy on a par with solid wood thanks to a hot forging method, the turntable measured 374mm in diameter and weighed 5.8kg including a 300g rubber sheet. With a unique shape featuring a high outer edge it achieved a massive inertia of 1200kg/㎠. A powerful direct-drive motor boasting startup torque of 2kg/cm made possible a positive and negative two-way servo that could instantaneously apply torque in the opposite direction during both acceleration and deceleration, and when used with the external power supply sold separately it was possible to operate the electronic brake by using the main body power switch as in broadcasting equipment. The GT-2000 also made owners swoon with a range of attractive accessories that let them enjoy customizing their units with their own hands. These included the previously mentioned YOP-1 external power supply, the YAB-1 32kg anchor block that held the cabinet from the left and right, the YDS-1 disc stabilizer utilizing a brass platter and electric absorption pump, and the YSA-1/YSA-2 straight tonearm. The GT-2000x introduced in 1985 was a Limited Edition upscale model with upgraded enclosure, tonearm and shaft. (Source Yamaha) Original sale price 2000 DM Germany. Specifications: Motor: Quartz Direct Drive | Platter: 37,4cm/5,8kg | Wow & Flutter: 0,005% | S/N ratio: 85dB | Tonearm: YA-39 static balanced | Tonearm length: 26,2cm | Dimensions: 545x125x395mm | Weight: 28kg
YAMAHA PF-1000 (1983)
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The PF-1000 introduced by Yamaha in 1983 is a belt-driven turntable with 3-point inverted spring suspension with rubber surrounds. A resin-cast FG-Servo motor drives the bronze subplatter while platter itself is made of diecast aluminum (outer part). The turntable is fitted with a special Dynamic Balance Twin-Pipe tonearm where the left and right cartridge wires are separated, each into one arm. Other features include a carbon-fibre resin headshell, record clamp with strobe disc, pitch control and oil-damped cueing mechanism. Available with walnut finish and brushed aluminium top parts or full black. Size: 473x154x376 | Weight 13,7kg.
