Sony TC756-2 reel-to-reel

The Sony TC756 set new records for performance of home tape decks.

Hirsch-Houck Laboratories further noted. "The dynamic range, distortion, flutter and frequency response performance are so far beyond the limitations of conventional program material that its virtues can hardly be appreciated".

 

The Sony TC756-2 features a closed loop dual capstan tape drive system that reduces wow and flutter to a minimum of 0,03% , logic controlled transport functions that permit the feather-touch control buttons to be operated in any sequence, at any time without spilling or damaging tape: an AC servo control capstan motor and an eight-pole induction motor for each of the two reels; a record equalization selector switch for maximum record and playback characteristics with either normal or special tapes; microphone attenuators that eliminate distortion caused by overdriving the microphone pre-amplifier stage when using sensitive condenser mics; tape/source monitoring switches that allow instantaneous comparison of program source to the actual recording; a mechanical memory capability that allows the machine to turn itself on and off automatically for unattended recording; and a full, two-year guarantee.

In addition, the TC756-2 offers 15 and 7-1/2 ips tape speeds; Ferrite & Ferrite 2-track/2-channel stereo three-head configuration; and symphase recording that allows you to record FM matrix or SQ** 4-channel sources for playback through a decoder-equipped 4-channel amplifier with virtually non-existent phase differences between channels.

The Sony TC756-2 is representative of the prestigious Sony 700 Series - the five best three-motor 10-1/2" reel home tape decks that Sony has ever engineered.

 

Specifications

Track System:  2-track 2-channel stereo (TC756-2); 4-track 2-channel stereo (TC756)

Reels:  270 mm (10-1/2 inches) or smaller

Tape Speed:  19 cm/s (7-1/2 ips), 38 cm/s (15 ips)

Recording Time:  with 1,100 m (3360 ft) tape of 270 mm (10-1/2 inch) reel

3-hours stereo recording at 19 cm/s (7-1/2 ips) :  TC756

1,5 hours stereo recording at 19 cm/s (7-1/2 ips) :  TC756-2

Heads:

TC576 Model

Record :  RF140-2902

Playback :  PF142-4202

TC756-2 Model

Record :  RF142-2202A

Playback :  PF142-2202A

Motors:

Capstan :  IC-624G (AC servo controlled)

Reel :  IC-638R (2)

Frequency Response (with Sony SLH tape):

20 - 35,000 Hz at 38 cm/s (15 ips)

30 - 30,000 Hz ±3 dB at 38 cm/s (15 ips)

20 - 30,000 Hz at 19 cm/s (7-1/2 ips)

30 - 25,000 Hz ±3 dB at 19 cm/s (7-1/2 ips)

Signal-to-Noise Ratio

TC756 Model

Sony SLH Tape :  56 dB

Standard Tape :  53 dB

TC756-2 Model

Sony SLH Tape :  59 dB

Standard Tape :  56 dB

Wow and Flutter

0,04% (RMS) weighted at 38 cm/s (15 ips)

0,06% (RMS) weighted at 19 cm/s (7-1/2 ips)

Overall Distortion:  1,2%

Record Bias Frequency:  approx 160 kHz

Input Sensitivity/Impedance

Mic :  0,19 mV (-72 dB) / low

Line In :  60 mV (-22 dB) / 100 k Ω

Output Level/Impedance

Line Out :  0,44 V (-5 dB) with 100 k Ω load  / 100 k Ω

Headphone :  8 Ω  Impedance

Rec/Power Bandwidth Connector (AEP, UK)

Input Impedance :  3,9 k Ω

Output Impedance :  8,2 k Ω

Semiconductors:  1 ICs; 2 FETs; 58 Transistors; 46 Diodes

AC Outlet (USA):  Unswitched, 300 W maximum

Power Requirements:  AC 120 V, 60 Hz (USA, Canada); AC 110, 127, 220 0r 240 V 50/60 Hz (AEP, UK)

Power Consumption:  100 W (USA); 110 W (AEP, UK, Canada)

Dimensions (W x H x D):  435 x 451 x 221 mm (17-1/8" x 17-3/4" x 8-3/4")

Weight:  24 kg (52 lb 14 oz)

 

Sony PS-2250 turntable

Newly-developed servo-controlled direct drive turntable and turntable system. Rumble-free performance with lowest flutter and wow.

 

PS-2250 features:

Direct-drive turntable

The turntable and motor are directly coupled, eliminating idler and belt. The result is extremely silent, reliable operation.

 

Sony's exclusive AC servo drag cup motor

There is virtually no irregular rotation torque or vibration because of the combination of an AC motor (with non-magnetic copper material press formed into a cup shape on the rotor) and frequency generator servo mechanism

Wow and Flutter

Combination of a turntable with large-mass inertia moment and AC servo system keeps wow and flutter extremely low, less than 0,04% and 0,03% for TTS-4000

Rumble

AC servo control enables the motor to roatate at low speeds. So the rumble is virtually inaudible; under -58 dB, and _60 dB for TTS-4000

Electrical speed switching and adjustment

Adjustment is accomplished by changing the circuit constant of the servo amplifier.

Stroboscope to measure the turntable speed; Pitch control to obtain accurate speed; Feather touch speed selector

Static balanced tonearm with direct-reading gauge, anti-skating compensator and lateral balancer (PS-2250)

 

Specifications

Turntable System:  Direct-drive

Motor:  AC Servo-Controlled motor

Speeds:  33-⅓ and 45 rpm ±4% adjustable

Wow and Flutter (weighted):

WRMS :  less than 0,04%

DIN 45507 :  less than 0,07%

Signal-to-Noise Ratio (Weighted)

JIS :  better than 58 dB

DIN 45544 :  better than 67 dB

Turntable Platter

Diameter :  310 mm (12-3/16")

Weight :  1,5 kg (3 lb 5 oz) aluminium diecasted

Start-up-Time:  less than 2,5 sec

Tonearm Section PUA-114

Type:  Static balanced

Arm Length (Pivot-To-Stylus):  245 mm (9-21/32")

Overhang:  14 mm (9/16")

Stylus Force:  0 to 3 g adjustment (0,1 g increments)

Anti-skating Range:  0 to 3 g, (0,5 increments)

Tonearm Height Precise Adjust Range:  465 mm - 515 mm (1-27/32" - 2-1/32")

Cartridge Weight Range:  4 g to 11 g (10 g - 17 g optional counterweight CW-50)

Headshell Weight:  10,5 g

Power Requirements:  110, 127, 220 and 240 V 50/60 Hz

Power Consumption:  15 watts

Dimensions

PS-2250 (W x H x D) :  490 x 185 x 395 mm (19-9/32" x 7-9/32" x 15-11/32")

TTS-2250 (W x H x D) :  328 x 146 x 357 mm (12-29/32" x 5-3/4" x 14-1/16")

Weight (net)

PS-2250 :  11,3 kg (24 lb 15 oz)

TTS-2250 :  7,5 kg (16 lb 9 oz)

 

Sony PS-X35 turntable

Direct-Drive turntable

Full automatic direct drive turntable with a BSL linear motor

The crystal lock system in conjunction with a specially developed servo IC ensures stable and accurate speed as well as a high degree of reliability

The accurate speed sensing provided by the magnedisc servo system ensures that the crystal lock system operates at its full potential

High torque (500 gm/cm) BSL DC servo controlled motor which ensures low wow and flutter, yet enables the turntable to reach full speed within half a revolution

All major functions, such as power on/off; start/stop; repeat; speed changing and arm raising or lowering can be operated with the dust cover closed

Cartridge supplied

LED speed display

 

Specifications

Turntable Section

Type:  Fully automatic

Speeds:  33-⅓ and 45 rpm

Motor:  Linear BSL motor

Speed Control Range:  Fixed

Wow and Flutter:  0,03% WRMS, ±0,05 DIN

Signal-to-Noise Ratio:  73 dB DIN

Tonearm Section

Type:  Static balance

Overall Arm Length:  300 mm

Stylus Force adj. Range:  0 - 3 g

Shell Weight:  10,5 g

Cartridge Weight Range:  12 - 18 g (with headshell)

Cartridge Section

Type:  XL15

Channel Separation:  better than 25 dB at 1 kHz

 output Voltage:  4 mV at 1 kHz

Tracking Weight:  1,7 g recommended

Stylus:  ND 15G conical, 0,6 mil diamond

General

Power Requirements:  AC 240 V, 50 Hz

Power Consumption:  8 watts

Dimension (W x H x D):  445 x 140 x 395 mm

Weight:  5,8 kg

 

Sony PS-X60 turntable

 

Direct drive Turntable

Fully automatic crystal lock direct drive turntable

High torque (1 kg/cm) BSL DC servo motor ensures low wow and flutter

Precision arm with adjustable height

Ultra rigid IEC head shell connector

Cartridge is not supplied, recommended XL 45, XL55, XL55-PRO cartridges

 

Specifications

Turntable Section

Type:  Fully automatic

Speeds:  33-⅓ and 45 rpm

Motor:  Linear BSL motor

Speed Control Range:  Fixed

Wow and Flutter:  0,025% WRMS, ±0,045 DIN

Signal-to-Noise Ratio:  75 dB DIN

Tonearm Section

Type:  Static balance

Overall Arm Length:  330 mm

Stylus Force adj. Range:  0 - 2,5 g

Shell Weight:  11 g

Cartridge Weight Range:  11 - 19,5 g (19 - 17,5 g with extra weight)

General

Power Requirements:  AC 240 V, 50 Hz

Power Consumption:  12 watts

Dimension (W x H x D):  480 x 165 x 420 mm

Weight:  12 kg

Sony PS-X40 turntable

Direct drive turntable

Fully automatic crystal lock direct drive turntable

High torque BSL, DC servo motor ensures low wow and flutter

All major function can be operated with the dust cover closed

Recommended cartridge XL45 (not supplied)

 

Specifications

Turntable Section

Type:  Fully automatic

Speeds:  33-⅓ and 45 rpm

Motor:  Linear BSL motor

Speed Control Range:  Fixed

Wow and Flutter:  0,025% WRMS, ±0,045 DIN

Signal-to-Noise Ratio:  73 dB DIN

Tonearm Section

Type:  Static balance

Overall Arm Length:  300 mm

Stylus Force adj. Range:  0 - 3 g

Shell Weight:  11 g

Cartridge Weight Range:  12 - 19 g

General

Power Requirements:  AC 240 V, 50 Hz

Power Consumption:  8 watts

Dimension (W x H x D):  445 x 145 x 400 mm

Weight:  8 kg

Sony PS-T15 turntable

Direct Drive Turntable

Semi-automatic direct drive turntable with linear BSL motor for stable speed, low wow and flutter and high Signal-to-Noise Ratio

Magnedisc servo systam for accurate speed sensing

Easy to use semi-automatic system; the reject button can be used with the dust cover closed

Aluminum die-cast platter with illuminated stroboscope

Cartridge supplied

 

Specifications

Turntable Section

Type:  Semi-automatic

Speeds:  33-⅓ and 45 rpm

Motor:  Linear BSL motor

Speed Control Range:  ±%

Wow and Flutter:  0,0% WRMS, ±0,05 DIN

Signal-to-Noise Ratio:  68 dB DIN

Tonearm Section

Type:  Static balance

Overall Arm Length:  300 mm

Stylus Force adj. Range:  0 - 3 g

Shell Weight:  7,5 g

Cartridge Weight Range:  4 - 10 g

Cartridge Section

Type:  XL15

Channel Separation:  better than 25 dB at 1 kHz

 output Voltage:  4 mV at 1 kHz

Tracking Weight:  1,7 g recommended

Stylus:  ND 15G conical, 0,6 mil diamond

General

Power Requirements:  AC 240 V, 50 Hz

Power Consumption:  8 watts

Dimension (W x H x D):  445 x 1140 x 375 mm

Weight:  5,0 kg

 

Sony PS-333 turntable

Sony Direct-Drive Turntable

Full automatic direct-drive turntable with a BSL motor

Magnedisc servo system for accurate speed sensing

Controls can be operated with the dust cover closed

Universal static balance type tonearm with bias adjustment

Illuminated stroboscope to check turntable speed.

Cartridge supplied

 

Specifications

Turntable Section

Type:  Fully automatic

Speeds:  33-⅓ and 45 rpm

Motor:  Linear BSL motor

Speed Control Range:  ±6%

Wow and Flutter:  0,03% WRMS, ±0,045 DIN

Signal-to-Noise Ratio:  70 dB DIN

Tonearm Section

Type:  Static balance

Overall Arm Length:  216,5 mm

Stylus Force adj. Range:  0 - 3 g

Shell Weight:  7,5 g

Cartridge Weight Range:  4,5 - 11 g

Cartridge Section

Type:  VL 37G

Channel Separation:  better than 23 dB at 1 kHz

 output Voltage:  3,5 mV at 1 kHz

Tracking Weight:  2 - 3 g

Stylus:  ND 137G

General

Power Requirements:  AC 240 V, 50 Hz

Power Consumption:  6 watts

Dimension (W x H x D):  430 x 125 x 365 mm

Weight:  5,3 kg

 

Sony PS-212A turntable

Sony Direct-Drive turntable

Semi-automatic direct-drive turntable with a BSL motor

Magnedisc servo system for accurate speed sensing

Controls can be operated with the dust cover closed

Illuminated stroboscope to check turntable speed.

Pitch control

Cartridge supplied

Specifications

Turntable Section

Type:  Semi-automatic

Speeds:  33-⅓ and 45 rpm

Motor:  Linear BSL motor

Speed Control Range:  ±3%

Wow and Flutter:  0,03% WRMS, ±0,045 DIN

Signal-to-Noise Ratio:  70 dB DIN

Tonearm Section

Type:  Static balance

Overall Arm Length:  300 mm

Stylus Force adj. Range:  0 - 3 g

Shell Weight:  13 g (with cartridge)

Cartridge Weight Range:  4 - 12 g

Cartridge Section

Type:  VL 33G

Channel Separation:  better than 20 dB at 1 kHz

 output Voltage:  3,5 mV at 1 kHz

Tracking Weight:  2 - 3 g

Stylus:  ND 136G

General

Power Requirements:  AC 240 V, 50 Hz

Power Consumption:  6 watts

Dimension (W x H x D):  410 x 125 x 370 mm

Weight:  4,8 kg

 

Sony TC-K81 cassette tape deck

The Professional-Grade Performance of Three-Head Design

Independent-Suspension heads

With their superior performance and enhanced operating flexibility three-head machines are obviously attractive. But there are several problems particular to the design of three-head cassette decks. For example, it is no simple matter to fit there heads into the cassette shell's openings. Fitting each head into a different opening raises the problem of tape skewing between the heads which causes azimuth error. Even slight azimuth error can result in audible high frequency losses. Thus, decks that insert each head through its own opening often require the user to re-adjust head azimuth before recording each side of each cassette.

However, placing the record and playback heads through the same opening can cause improper contact with the cassette's pressure pad, as well as interference between the two heads. In this configuration, bias leakage and magnetic cross-feed can degrade the monitored sound during recording when both heads are active. Sony with its long experience in three-head recording,, has solved these problems with a unique, new head configuration;

Independent Suspension.

Unlike the vast majority of three-head cassette decks, the Sony TC-K81 (and TC-K71), with Independent Suspension, use physically distinct, individually-shielded record and playback heads. Separate shielding reduces magnetic cross-feed and bias leakage dramatically. While physically distinct from each other, both the record and playback heads still fit into the cassette's center opening, in fact, the two head gaps are intentionally brought close together - less than 3,1 milimeters apart. As a result, both gaps make proper contact with the cassette's pressure pad. And the gaps are so close together that skewing error is reduced to the vanishing point. There is no need for user-adjustable azimuth.

Sony's Independent-Suspension three-head design ensures that the frequency response of these machines is not only extended, but also extremely stable. You can expect good result on each cassette, from the beginning of the tape to the end, on side A as well as side B. Of course the record and playback heads of these decks boast Sony's Sendust and Ferrite head formulation (as described for the TC-K44 and K61). The S & F design provides high permeability low specific resistance. Un supressed maximum flux density and exceptionally long service life.

 

Bias and Record Calibration

The TC-K81 incorporates even more sophisticated adjustments for each tape formulation. Bias and record calibrations permit the K81 to be handtailored to suit the requirements of each tape. Built-in test-tone oscillators, the monitoring capability of the three-head format and the deck's own Peak Program Meters combine to make calibration quick, simple, and precise.

The bias calibration procedure of the TC-K81 establishes flat frequency response by obtaining equal output for a 400 Hz and an 8000 Hz test tone. These tones are recorded and played back together, and displayed on the deck's meters. To make the adjustment, you simply turn the Bias Cal Knob for equal readings on both meters. Because switching to the calibration mode automatically increases meter sensitivity, the adjustment is accurate to within 0,5 dB.

The result is flat high-frequency response and low-distortion recording with any tape you use. In addition, the K81 provides record level calibration with the 400 Hz tone. You make adjustments with the left and right controls, setting the meters to the Rac Cal reference marks. When set, Dolby noise reduction tracking in encode and decode will be precise, resulting in accurate high-frequency sound during both loud and soft passages.

 

Closed-Loop Dual -Capstan drive

Conventional cassette decks use a single drive capstan, engaging a single pinch rolle; to drive the tape. While single-capstan drive often yields good performance, dual-capstan drive - using two capstans and two pinch rollers - is a superior system. The TC-K81 (and TC-K71) incorporate dual-capstan drive. Both capstans are driven from the BSL motor by the same belt, in a closed-loop configuration. The capstans are located on either side of the head assembly, for better control of tape tension, and minimum modulation noise.

Combining this drive system with a separate spooling motor, and two over-size anti-resonant flywheels, the K81  (and K71) achieve clear, unwavering sound, even during sustained notes.

 

 Specifications

Drive Type:  Belt

Servo Type:  Frequency

Number of Motors:  Two

Motor Type:  Capstan: BSL; Spooling:  High-Torque

Number of Heads:  Three

Record/Play Head Type :  2 x S&F

Erase Head Type :  2-Gap Ferrite

Record Level Calibration:  400 Hz osc.

Fast-Forward/Rewind Time (C-60):  80 sec.

Wow and Flutter:  0,04% (WRMS), 0,12% (DIN 45507)

Frequency Response (±3 dB, Re: -20 dB)

Metallic Tape : 30 - 18,000 Hz

FeCr Tape : 30 - 18,000 Hz

EHF Tape : 30 - 17,000 Hz

SHF Tape : 30 - 15,000 Hz

Re: 0 dB Metalic Tape : 30 -13,000 Hz

Signal-to-Noise Ratio ( Dolby NR Off, Re: 3% THD, Peak, IHF-A Wtd.)

Metallic Tape : 60 dB

FeCr Tape : 60 dB

EHF Tape : 58 dB

SHF Tape : 54 dB

Improvement with Dolby NR On :  Up to 5 Db at 1 kHz, 10  Db at 5 kHz or above

Total Harmonic Distortion (1 kHz, Re: 0 db Record level)

Metallic Tape : 0,8%

FeCr Tape : 0,8%

Crosstalk (1 kHz, tracks):  60 dB

Separation (1 kHz, channels):  35 dB

Erasure (400 Hz, incl. Metallic Tape):  60 dB

Bias Frequency:  105 kHz

Meter Range:  -40 dB, +8 dB

Line Input Sensitivity/Impedance:  77,5 mV/50 k ohms

Mic Input Sensitivity/Impedance:  0,25 mV/Low

Line Output Level: 

Fixed :  435 mV

Variable :  27,5 - 435 mV

Line Output Load Impedance Nominal/Minimum:  50/10 k ohms

Headphone Output Level:  4,9-77,5 mV

Nominal Headphone Impedance:  8 ohms

Power Requirements:  AC 120/240 V 50/60 Hz

Power Consumption:  26 W

Dimensions (W x H x D):  430 x 130 x 290 mm (17" x 5-1/8" x 11-3/8")

Weight:  6,3 kg (13 lbs 14 oz)

 

Sony TC-K71 cassette tape deck

The Sony TC-K71 is outstanding examples of advanced technology in the service of music. This machine provide the exceptional sound quality of Sony's Independent-Suspension three-head design and the absolute precision of Closed-Loop Dual Capstan drive. The K71 offers variable bias for TypeI tapes, and including two-motor tape drive with BSL capstan motor and FG servo system, Sony's Dolby IC for greater dynamic range and lower distortion, microprocessor logic control with remote and timer capabilities, LED Peak-Program Meters with double indication peak-hold, and selected electronic parts for superior performance.

 

Three-Head Design

Many audiophiles prefer three-head decks - with separate erase, ecord, and playback heads - because this format permits them to monitor the tape an instant after it has been recorded. In this way, the user can compare the quality of the recorded music with the original source. Tape monitoring is convenient and in demanding applications, the monitored sound can be an invaluable recording tool. But three heads yield significant performance advantages, too.

A conventional cassette deck, with a combined record/play head different physical requirements from playback. Recording is a high-energy process, involving signal levels some 40 dB higher than playback. For good recording dynamic range, the head gap should be wide - three to five microns. Yet for playback high-frequency response, the gap should be narrow - no more than one micron. Any combined record/play head must necessarily represent a compromise between these two requirements.

The Sony TC-K71 circumvent this compromise. This deck have separate record and playback heads, each optimized to its particular function. The playback head has a narrow 0,9  micron gap for response out to 18,000 Hz. And the record head has a wide 4,5 micron gap for superb dynamic range. In fact, the high-energy capabilities of the record head easily meet the requirements of the most demanding tape formulations, including metal particle tape.

 

Variable Bias for Type

Slight variations in bias requirements from one brand to another can result in overly "bright" or "dull" high frequency response, and excess distortion. The problem is most serious for Type I tapes, which have the widest range of bias need. For this reason, the TCK71 variable bias for Type I cassettes. To use the bias control, you record sample material and switch back and forth between Tape and Source, correcting the bias for proper tonal balance.

 

 

 Specifications

Fast-Forward/Rewind Time (C-60):  80 sec.

Wow and Flutter:  0,04% (WRMS), 0,12% (DIN 45507)

Frequency Response (±3 dB, Re: -20 dB)

Metallic Tape : 30 - 18,000 Hz

FeCr Tape : 30 - 18,000 Hz

EHF Tape : 30 - 17,000 Hz

SHF Tape : 30 - 15,000 Hz

Re: 0 dB Metalic Tape : 30 -13,000 Hz

Signal-to-Noise Ratio ( Dolby NR Off, Re: 3% THD, Peak, IHF-A Wtd.)

Metallic Tape : 60 dB

FeCr Tape : 60 dB

EHF Tape : 58 dB

SHF Tape : 54 dB

Improvement with Dolby NR On :  Up to 5 Db at 1 kHz, 10  Db at 5 kHz or above

Total Harmonic Distortion (1 kHz, Re: 0 db Record level)

Metallic Tape : 0,8%

FeCr Tape : 0,8%

Crosstalk (1 kHz, tracks):  60 dB

Separation (1 kHz, channels):  35 dB

Erasure (400 Hz, incl. Metallic Tape):  60 dB

Bias Frequency:  105 kHz

Meter Range:  -40 dB, +8 dB

Line Input Sensitivity/Impedance:  77,5 mV/50 k ohms

Mic Input Sensitivity/Impedance:  0,25 mV/Low

Line Output Level: 

Fixed :  435 mV

Variable :  27,5 - 435 mV

Line Output Load Impedance Nominal/Minimum:  50/10 k ohms

Headphone Output Level:  4,9-77,5 mV

Nominal Headphone Impedance:  8 ohms

Power Requirements:  AC 120/240 V 50/60 Hz

Power Consumption:  26 W

Dimensions (W x H x D):  430 x 130 x 290 mm (17" x 5-1/8" x 11-3/8")

Weight:  5,6 kg (12 lbs 5 oz)

 

Sony PS-X800 turntable

 

The Perfect Match - The Biotracer Tonearm and Tangential Tracking

The PS-X800 is designed for audiophiles and music lovers who will settle for nothing but the very best reproduction of music from their record collection. Careful attention was given to each detail of the PS-X800 to make it the new standard against which every other turntable will have to be measured.

Outstanding Features:

Tangential Biotracer tonearm for minimum distortion, excellent soni performance

Biotracer tonearm elicits the best performance from the widest variety of cartridges

Biotracer actively damps tonearm/cartridge resonance and achieves wide stereo separation

Biotracer controls tracking force, anti-skating and tonearm automatic functions

 

Tonearm

Advanced fully automatic operation is silent and responsive for total convenience

Automatic zero-balance for fast interchange of cartridges

Tonearm may be "indexed" left and right at high or low speed without lifting dust cover.

Feather-touch controls respond to the slightest finger contact for fast, effortless function selection

Automatic record-size selector permits precise and safe indexing

Audio muting circuit provides silence during start, return, and cueing phases

Luminous end-of-disc sensor frees the tonearm from mechanical linkages for improved reliability

Capable of operation in synchronization with selected Sony cassette decks using the optional Sony RM-65

Repeat mode for continuous music

Accepts universal headshells and cartridge/headshell combinations

 

Turntable

Quartz lock with Magnedisc servo control prevents even minute speed variations caused by external factors

The Sony Linear Torque BSL motor designed for uniform and smooth delivery

Of torque

Electromagnetic braking provides rapid and smooth half of platter rotation

Sony Bulk Molding Compound base is both rigid and acoustically inert to reduce feedback

Adjustable, gel-filled feet isolate turntable from external vibrations

 

The tangential Biotracer tonearm

The Sony PS-X800 is the first turntable to combine the advantages of tangetial tracking with the low-frequency performance of a stable tonearm foundation. Like other straight-line tracking turntables, the X800 uses a tonearm mounted on a moving platform. However, unlike any other tangetial arm in the world, the tonearm of the X800 incorporates Sony's innovative Biotracer design.

The Biotracer's automated Motional Feedback (MFB) system constantly senses and corrects for tonearm vibration. For this reason, the arm provides all the advantages of a solid foundation: full-bodied, detailed low frequencies. And you get the reduced distortion, and improved stereo separation associated with tangential tonearms.

 the Biotracer tonearm of the PS-X800 is the first design to fulfill the promise of straight-line tracking. Quite clearly, the combination of the Biotracer tonearm and the tangential configuaration results in a joyful musical experiance.

 

Uni-Motion design for superior precision

He tangential Biotracer arm provides still more benefits. Other straight-line tracking arms require some slight tracking error to keep the arm moving forward. These tonearms are in a constant state of correcting tracking error. In contrast, the PS-X800 incorporates Uni-Motion design. Uni-Motion brings the tonearm slowly towards the center of the record, even when no tracking error is detected. As a result, the tangetntial Biotracer maintains superior groove tangency. Phase differences between the stereo channels are dramatically reduced. This results in a stable stereo image, with outstanding spatial characteristics.

As a final measure of precision, the vertical tonearm bearings, so important to tonearm function, are made to extremely close dimensional tolerances. Situated in Sony's long-span pivot, they provide the final assurance of exquisite performance.

The PS-X800, with its Biotracer tonearm and straight-line tracking displays exceptionally lower distortion, extraordinary stereo separation and greatly improved reproduction of the inner grooves of all records,  most important, the Biotracer tonearm is unique in providing the solid, vibration-free tonearm base necessary for superior music reproduction.

 

Specifications

Operation Type: Fully-automatic

Tonearm

Type:  Tangential Biotracer

Effective Length:  180 mm (7-1/8 ")

Overhang:  0 mm (0 ")

Tracking Error:  ±0,05°

Usable Cartridge Weight (including headshell): 10 -17g; 16 - 23 g; 22 - 29 g

Supplied Headshell:  SH-156 (7.2)

Effective Mass (without cartridge): 

Turntable

Drive System Motor Direct, BSL - Yes

Magnedisc Servo Control - Yes

Quartz Lock, with Indicator - Yes

Wow and Flutter

WRMS :  0,025%

DIN-45507 :  ±0,03%

FG Direct Measurement:  0,015%

Signal-to-Noise Ratio (DIN-B): 78 dB

Speed Accuracy:  better than 0,003%

Start-up Time at 33-⅓ rpm:  1/2 rotation

Platter Diameter:  320 mm (12-5/8")

Platter Weight (with rubber mat):  1075 kg (3 lb 14 oz)

Speeds:   33-⅓ and 45 rpm

Electromagnetics Breaking:  Yes

Others

Power Requirements:  AC 120 V

Power Consumption:  45 Watts

Dimensions (W x H x D):  440 x 120 x 440 mm (17-5/16" x 4-3/4" x 17-5/16")

Weight:  11,6 kg (25 lb 10 oz)

Sony Biotracer tonearm

Biotracer.  The World's Most Advanced Tonearm

 

The tonearm problem - every tonearm functions to hold the cartridge, enabling the cartridge to trance the record groove. While this task is simple to describe, doing the job well is anything but simple. To prevent sonic coloration, the tonearm must be strong, a requirement that suggests heavy-duty construction. Yet some cartridges require low tonearm mass. At some frequencies the tonearm must be inert and immune to vibration - while at others it must move without resistance. And the tonearm must handle the imperfections of real-world records; warp and inaccurate centering.

All of the traditional methods of coping with these problems have dealt in pure mechanics. Sony has now taken a bold step beyond mechanics to find a solution to the troubles that have puzzled designers since the first turntables were presented to the world.

 

The Biotracer solution

Conventional tonearms are passive objects moved only as a result of external force. In contrast, Sony's new Biotracer tonearm is radically different. The Biotracer moves under the constant control of two separate motors that are guided by a "brain" - a sophisticated multi-function micro-computer. As a result the Biotracer tonearm is an active contributor to exquisite performance. In fact, it is the solution to a number of problems that have plagued turntable designers and music lovers.

The Biotracer damps resonance

It is an unfortunate fact that many cartridge/tonearm combinations produce unwanted resonances which distort the music. The Biotracer tonearm damps these unwatnted resonances consistently. Music reproduction is crystal clear and undistorted.

 

The Biotracer accepts the widest variety of cartridges

The problem of resonance limits even the finest conventional tonearms to a relatively small number of compatible cartridges. The Biotracer's ability to damp the unwanted vibrations of tonearm resonance means that you are free to choose from the widest variety of cartridges - moving magnet or moving coil - including the latest high-compliance models.

The Biotracer reduce modulation noise

In conventional tonearms, unwanted stylus motion results in modulation noise - a blurring of proper musical pitches. The Biotracer tonearm dramatically reduces such noise, for clear, crisp sound.

 

The Biotracer provides added precision

As music lovers are awere, the anti-skating and tracking force systems of conventional tonearms cannot be completely accurate. This is because record warps and eccentricities tend to alter the effective forces. You get mistracking and premature record wear. The Biotracer tonearm senses and immediately corrects for such external influences, automatically. You get perfect tracking. As an added benefit, you can even vary the tracking force while the record is playing, for the clearest possible sound.

The Biotracer tonearm does more than incorporate the latest in magnetic, microprocessing and electro-mechanical technology, it ends the long-standing compromises embodied in conventional tonearms, its precise operation, response to command and its extraordinary contribution to musical sound represent a significant advance in the state of the art..