What is stereo?

There are now two system of high fidelity, monophonic (monaural) and stereophonic. Monophonic is a system that starts from one microphone and is fed through a single high fidelity set. Stereophonic is a double system. Two separate microphones are placed at different sides of the orchestra and two different systems are used to keep the two signals or channels separated. Two separate speakers are used, placed on different sides of you room. Stereo is much like 3-D photography, two slightly different sound reach your ears giving you a new dimension in sound.

H.H. Scott '59

Cambridge Alva TT turntable

Rather than go for a Belt Drive system with the ALVA TT, we opted for a medium-torque Direct Drive. Over time, the elastic used on a Belt Drive turntable can stretch and will need to be replaced. As a result of this wear, Belt Drive turntables traditionally have a less accurate playback speed than their Direct Drive cousins. This isn’t a problem on the ALVA TT – it has just 0.06% Wow and Flutter. This means a far better pitch stability – particularly during longer, more sustained musical notes.

The Alva TT uses a classic British-made one-piece tonearm. There are no joints, giving it the best possible grounding for the cartridge and offering extremely low friction.
It’s designed to retrieve the maximum amount of sonic detail from the cartridge and therefore your records.

Bluetooth aptX HD liberates your record player from the hi-fi rack. With the freedom to place Alva TT anywhere you like, your records are invited into the lime-light. Your music can be streamed from Alva TT to any Bluetooth receiver at up to 24bit/48kHz Hi-Res, which means you’re guaranteed an authentic vinyl experience, wherever it’s placed.

Drive Type:  Direct Drive:
Turntable Speeds:  33-1/3, 45 rpm
Motor Torque:  1.6 kg/cm
Wow & Flutter:  less than 0.1%
Turntable Platter:  POM (Polyoxymethylene)
Diameter:  305 mm
Tonearm Type:  One piece aluminium casting
Tonearm Effective Length:  238 mm
Tonearm Overhang:  17.2 mm
Tonearm Effective Mass:  11 g
Phono Stage Gain at 1 kHz:  42 dB
Phono Stage Nominal Output (with CA cartridge):  250 mV rms
Phono Stage Equivalent Input Noise (A-weighted):  0.1 µV rms
Phono Stage RIAA Curve Accuracy:  ±0.3 dB 30 Hz - 20 Hz
Phono Stage Signal/Noise Ratio (ref 1V out, 20-20K BW):  better than 90dB
Phono Stage THD+N 1kHz:  0.0025%
Phono Stage Input Impedance:  47 kΩ
Phono Stage Input Capacitance:  320 pF
Audio Outputs:  RCA line level
Cartridge Type:  High Output Moving Coil
Cartridge Frequency Response:  ±1 dB 30 Hz - 20 kHz
Cartridge Stylus:  Elliptical
Cartridge Cantilever:  Aluminium
Cartridge Output Level:  2 mV at 1 kHz
Cartridge Tracking Force:  2 g
Cartridge Recommended Load:  47 kΩ
Bluetooth:  SBC, aptX, aptX HD
Power Supply:  AC 100 - 240 V, 60/50 Hz
Power Consumption:  6W Approx, 20W max, 0.5W (Standby)
Dimensions (W x H x D):  435 x 139 x 368 mm
Weight:  11 kg

Sansui AU-519 amplifier

Straight DC and Diamond Differential DC - Two Sansui Original Circuit Designs for Lower TIM, Purer Sound

Fresh, dynamic musical reproduction. It's the result of Sansui's advanced amplifier technology, taking a new and in-depth look at the causes of coloration of tonal quality and fuzziness in stereo imaging. And finding ways to end them.
Some of the things we've discovered are truly amazing. TI (that's Transient Intermodulation) distortion, for instance is one of the things that stand in the way of pure musical reproduction. We/ve lowered the TIM and improved the slew rate dramatically in all our AU integrated amps, the AU-519 included All-DC design and Sansui's pat pend "Diamond Differential DC" circuit give us tremendous advantages over the competition.

Power output in the AU-519 is a pleasing 70 watts per channel, min. RMS, both channels driven into 8 , from 10 to 20,000 Hz with no more than 0,008% Total Harmonic Distortion. It adds up to a medium priced "best-buy" amp from the prestigious AU lineup by Sansui, where it's all hi-fi.

Power Output (min. RMS, both channels driven into 8 , from 10 to 20,000 Hz with no more than 0,008% Total Harmonic Distortion) :  70 watts per channel into 8
Load Impedance:  8
Total Harmonic Distortion (Power Amp IN):  less than 0,008% at or below rated min. RMS power output
Intermodulation Distortion (70 Hz :7 kHz = 4:1 SMPTE method):  less than 0,008% at or below rated min. RMS power output
Rise Time:  0,5 sec
Slew Rate:  160 V/µsec
Frequency Response (Power Amp IN) :  DC to 400 Hz +0 dB -3 dB (at 1 watt)
Damping Factor (Power Amp IN):  100 into 8  (at 1 watt)
RIAA Curve Deviation (Phono 20 Hz -20 kHz):  ±0,2 dB
Input Sensitivity/Impedance (1 kHz, for rated power output):
Phono 1 , 2 :  2,5 mV/47 k
Aux, Tuner,Tape :  150 mV/47 k
Power Amp In :  1 V/47 k
Output Level/Impedance (1,000 Hz)
Tape Rec :  150 mV into 47 k  / 600
Preamp Out :  1 V into 47 k / 400 ojm
Channel Separation (1 kHz, at rated power output)
Phono 1, 2 :  70 dB
Aux, Tuner, tape Play :  75 dB
Hum and Noise (short-circuit, A-network)
Phono 1, 2 :  88 dB
Aux, Tuner, Tape Play100 dB
Bass :  ±10 dB at 50 Hz
Treble :  ±10 dB at 15 kHz
Subsonic :  -3 dB (16 Hz), 6 dB/oct
Loudness (Volume control at -30 dB position)
10 dB at 50 Hz
8 dB at 10 kHz
Power Requirements:  100, 120, 220, 240 V 50/60 Hz
Power Consumption:  580 watts (max), 360 watts 440 VA (rated)
Dimensions (W x H x D):  430 x 168 x 390 mm (16-15/16" x 6-5/8" x 15-3/8")
Weight:  15,6 kg (34,4 lbs) net

JVC T-K100 tuner

 FM/AM Stereo Tuner
Though it lacks digital synthesizer tuning, the T-K100 is one of easiest to use tuners, and incorporates many new JVC tuner technologies; a low-noise J-FET transitor in the FM front end for high sensitivity and selectivity, and ICs wherever possible for better reliability. An extra-wide tuning dial, calibrated in linear units and softly illuminated units and softly illuminated, makes tuning easier.
Balanced AM mixer to reduce harmonic and intermodulation distortion.
FM Tuner Section
Tuning Range:  88 - 108 MHz
Usable Sensitivity (IHF):  10,8 dBf (0,95 µV/75 Ω)
26 dB Quieting Sensitivity (DIN):  1,2 µV/75 Ω
50 dB Quieting Sensitivity (IHF)
Mono :  17,3 dBf (2,0 µV/75 Ω)
Stereo :  38,3 dBf (22,5 µV/75 Ω)
46 dB Quieting Sensitivity (DIN)
Mono :  3,0 µV/75 Ω
Stereo :  35 µV/75 Ω
Signal-to-Noise Ratio:
Mono :  76 dB (IHF);  79 dB (DIN)
Stereo :  70 dB (IHF);  64 dB (DIN)
Total Harmonic Distortion (IHF):
Mono :  0,2%
Stereo :  0,3%
Selectivity:  60 dB ±400 kHz (IHF);  55 dB ±300 kHz (DIN)
Capture Ratio:  1,5 dB
IF Rejection:  85 dB at 98 MHz
Image Rejection:  60 dB at 98 MHz
AM Suppression:   50 dB
Frequency Response:  30 Hz - 15 kHz (+0,3 dB. -3,0 dB)
Stereo Separation:  40 dB at 1 kHz
Output Level:  600 mV (IHF);  310 mV (DIN)
Output Impedance:  3,3 k Ω
AM Tuner Section
Tuning Range
MW :  525 kHz - 1605 kHz
LW :  150 kHz - 350 kHz
Usable Sensitivity (Bar Antenna)
MW :  300 µV/m
LW :  400 µV/m
Signal-to-Noise Ratio:
MW :  50 dB
LW :  50 dB
MW :  0,5%
LW :  0,5%
Power Supply:  110-120 V, 220-240 V AC, 50/60 Hz
Power Consumption:  9 watts
Dimensions (W x H x D):  435 x 77 x 282 mm (17-3/16" x 3-1/16" x 12-2/16")
Weight:  2,6 kg (5,7 lbs)

JVC A-K100 amplifier

 Stereo Integrated Amplifier with Gm Driver
It's prieced within easy reach of everyone, yet it's built with powerful, low-distortion circuitry to drive even low, efficiency speakers easily. Its high-technology circuits include new Gm Driver to improve in-use performance in the home. To ensure sound remains clear and noise-free, it utilizes JVC's two-amp construction.
Output Power: 
25 watts per channel, min. RMS, both channels driven, into 8  from 40 Hz to 20 kHz with no more than 0,5% T.H.D.
27 watts per channel, min. RMS, both channels driven, into 8  at 1 kHz with no more than 0,7% T.H.D.
23 watts per channel, min. RMS, both channels driven, into 8  at1 kHz with no more than 0,08% T.H.D.
Total Harmonic Distortion:0,5% at rated output from 40 Hz to 20 kHz, 8 ohms
Power Bandwidth:  10 Hz - 30 kHz ('66 IHF both channels driven, 8 , 0,5% T.H.D.)
Frequency Response:  10 Hz - 30 kHz =1 dB, -3 dB (8 )
Tone Controls:
Bass :  100 Hz ±8 dB
Treble :  10 kHz ±8 dB
Input Sensitivity/Impedance
Phono :  2,5 mV/47 k
Tuner, Video, Aux, Tape:  160 mV/40 k
Phono Equalizer Deviation:  ±1,0 dB (40 Hz - 15 kHz)
Phono Overload :  100 mV (1 kHz)
Signal-to-Noise Ratio:
Phono :  70 dB ('66 IHF)
Tuner, Video, Aux, Tape :  95 dB ('66 IHF)
Loudness Control" =5 dB at 100 H
Power Supply :  AC 110/120/220/240 V 50/60 Hz
Power Consumption:  75 watts
Dimensions (W x H x D):  435 x 77 x 248 mm (17-1/8" x 3" x 9-3/4")
Weight:  3,7 kg (8,2 lbs)

Tannoy DC-2000 speakers

Frequency Response:  44 - 25,000 Hz (±3 dB)
Sensitivity:  92 dB
Recommended Amplifier Power:  10 - 150 W
Impedance:  6  (4  min.)
High/Medium Frequency :  8" Dual Concentric
DC2025 DMT: 1" Aluminium Dome; 8" Polyolefin Diaphragm
Low Frequency :  8" Polyolefin Bass Driver
Crossover Type:  Overdamped first and second order with impedance compensation
Crossover Frequency:  400 Hz , 2,300 Hz
Enclosure Type:  Closed
Internal Volume:  31 litres
Treminals:  Gold, bi-wired
Dimensions (H x W x D):  716 x 260 x 253 mm (28 x 10 x 10 inches)
Weight:  19,9 kg (each speaker)

Pioneer SX-330 receiver

Solid-State 20W AM/FM/MPX Stereo Receiver. New, versatile, dramatically styled.
Years of listening enjoyment in this quality receiver from Pioneer. The FM front end is equipped with FET for excellent sensitivity and selectivity. The ferrite loop antenna ensures ideal AM reception, too. With its 20 watts of music power, this handsome unit is a fine choice for any home music center.

FM Tuner Section
Flawless reproduction of FM mono and stereo broadcasts is assured throuh the use of FET and a three-gang variable capacitor in the front end section. Because the SX-330 is highly sensitive, with an excellent image ratio, reception is free from interference, even in areas where stations are closely crowded together on the dial. Low-noise silicon transitors provide an excellent Signal-to-Noise Ratio.
FM Multiplex Section
The advanced circuitry of the SX-330 incorporates and FM multiplex section with a stable time-switching type demodulator for better FM stereo separation
AM Tuner Section
The superheterodyne AM tuner's receiving band has a range of 525 to 1605 kHz. The highly sensitive (10uv) ferrite loopstick antenna inside the SX-330 eliminates the need for an outdoor antenna even in areas where stations are relatively distant.
 Audio Section
Sound comes through with exceptional clarity thanks to the carefully designed OTL complementary circuitry of the audio section with its all-silicon transitors. The big 20 watt output is perfect for home use.
Terminal Facilities
The SX-330 has connections for playing through a tape recorder or deck, a record player and headphones. The speakers are automatically cut out when you connect the headphones to the jack on the front panel. AM, FM and FM stereo are then yours to enjoy in complete privacy.
Contemporary Styling
Slim wooden case, midnight black front panel, a tuning needle that lights up behind the smoked glass for easy reading under subdued illumination - here is truly refined appearance that makes the SX-330 elegant in any room.
Audio Section
Circuitry:  OTL complementary push-pull
Music Power Output: 
20 watts total at 4 ohms (5% distortion, IHF)
17 watts total at 8 ohms (5% distortion, IHF)
Continuous Power Output
6W/6W at 8  - each channel driven
4W = 4W at 8  - both channel driven
Total Harmonic Distortion:  less than 0,5% (1 kHz, 1,5 W output)
Damping Factor:  11 at 8
Frequency Response:  40 to 100,000 Hz ±3 dB (over all)
Power Bandwidth:  30 to 35,000 Hz 5% distortion (AUX)
Hum and Noise (at rated output):
Mag :  better than 75 dB
Aux :  better than 85 dB
Input sensitivity/Impedance: 
Mag :  2,7 mV/50 k  
Aux :  240 mV/75 k
Output Terminals ansd jacks
Speakers :  4 to 16
Equalization Curve:  Phono RIAA
Tone Controls
Bass :  boost 11 dB, cut 16 dB at 50 Hz
Treble :  boost 8 dB, cut 9 dB at 10 kHz
Loudness Contour:  switchable on/off
Boost 9 dB at 50 Hz; boost 5 dB at 10 kHz with volume control set at -40 dB
FM Section
Circuitry:  FM front end using FET and 3-gang variable capacitor
Frequency Range:  87 to 108 MHz
IHF Usable Sensitivity:  3 µV
Image Rejection:  57 dB at 88 MHz
Signal-to-Noise Ratio:  55 dB (IHF)
Antenna Input:  300  balanced
Multiplex Section
Circuitry:  Time switching type demodulator FM mono/stereo automatic selection
Channel Separation:  35 dB at 1 kHz
AM Section
Circuitry: Superheterodyne
Frequency Range:  525 to 1605 kHz
IHF Usable Sensitivity:  10 µV
Image Rejection:  60 dB at 1000 kHz
Power Requirement/Consumption:  117 V, AC 60 Hz / 32 VA
Dimensions (W x H x D):  440 x 123 x 293 mm
Weight:  5,5 kg (12 lbs 2 oz) net

Copland CSA-14 amplifier

The Integrated Amplifier CSA 14, combines the benefits of both valve and transitor amplification, in a way unheard of before, usually hybrid Amplifiers dedicate one section of the amplifier to valve in isolation from the rest beacuse, the virtues of solid state and valve design are not the same, a synergy between them can be created, offering an alternative to either.
The Copland CSA 14 uses two valves in the input pre-differential driver stage of the amplifier allowing the notably smooth and transparent properties of the valves to blend with the power and dynamics of transitor electronics.
The synergy achieved surpasses, the found in other Hybrid Amplifier, in its relability while combining only the positive attributes from each element. 
The CSA 14 is build into a slim compact chassis. With the same build and sonic qualities, that have always formed the cornerstone of Copland's philosophy, offering exeptional valvue, whist the design allows the listener to relax and enjoy the astronnishing sound quality.
Due to popular demand, Copland have simplified one of their high-end amplifiers, in this case the CSA 14, to provide a solid state produkt of real quality, at a point within reach of the aspiring audiophile.
Output Power:  2 x 60W
Phono Input Impedance:  47 k Ω
Phono Sensitivity:  3 mV
Line Input Impedance:  33 k Ω
Line Sensitivity:  130 mV
Power Bandwidth:  5 Hz -30 kHz ±3 dB
Frequency Response:  5 Hz - 120 kHz ±3 dB
Total Harmonic Distortion:  better than 0,09%
Hum and Noise
Line :  better than 90 dB
Phono :  better than 76 dB
Phase:  non inverting
Vacuum Tubes:  2 x 6922 All valves are hand selected and identically matched.
Grounding:  Separated grounding on power supply. Signal/chassis connected to signal ground
Power Consumption:  250 watts
Dimensions (W x H x D):  430 x 125 x 375 mm
Weight (shipping):  13 kg

Copland CSA-8 amplifier

The CSA 8 incorporates just three controls for input, audio level (which remains calibrated in db steps) and an on/off switch. Advanteges can be gained of cause by reducing the controls, enabling the shortest and most direct signal path for a clean sound. The input selection caters for tuner, CD and AUX 1.
The valves have been replaced with an solid dtate circuit creating the most significant change in price and nature of the sound, but not in the quality itself. The sound stage has been brought forward as in transistor amplifiers, yet the smooth character attributed to Copland has been retaned.
Output Power:  2 x 60W
Line Input Impedance:  25 k Ω
Line Sensitivity:  92 mV
Power Bandwidth:  5 Hz -30 kHz ±3 dB
Frequency Response:  5 Hz - 120 kHz ±3 dB
Total Harmonic Distortion:  better than 0,1%
Hum and Noise
Line :  better than 90 dB
Phase:  non inverting
Grounding:  Separated grounding on power supply. Signal/chassis connected to signal ground
Power Consumption:  250 watts
Dimensions (W x H x D):  430 x 125 x 375 mm
Weight (shipping):  13 kg

NAD 710 receiver

NAD 710
The NAD 710 receiver combined into one chassis the Model 310 amplifier and 412 tuner. Receivers are often regarded as convenience products only; as a consequence most budget receivers may have many features but poor amplifier and tuner performance. NAD has chosen the other route; trim off all the "fat" and instaed optimise the design and components directly related to performance. The NAD 710 exemplifies this; no loudness controls, mono buttons, phono section, remote control, etc.; just those controls needed for day to day operation. The biggest change to conventional amplifier design is to be found internally, however, courtesy of the Super Simple circuit topology.

The super simple concept - the goal of the NAD engineers was to design a circuit which would an outstanding performance and supreme reliability - yet at a lower cost than using conventional technology. This has resulted in a totally new circuit topology, first used in the Model 310, appropriately named "Super Simple".
The highly unusual arrangement of putput devices and driver stages increases both the current capability and efficiency of the power amplifier. Many amplifiers specified at three times the power will not be able to match the Model 710's 20 Amps peak Current capability. Another benefit of the Super Simple concept is that on average it requires 50% less components compared to a conventional design of similar specification.

The high level of performance is further achieved by using discrete circuitry for the entire amplifier section. The generous power supply employs a Holmgren toroidal transformer and separate voltage rails for the Left and Right channels. Loudspeakers with complex loads (such as low impedances) can be driven with ease.
The tuner section can store up to 24 stations (12 AM; 12 FM). These are stored in a non volatile memory which allows the preset stations to remain in memory even if the unit is unplugged from the mains supply. Auto-Search and manual tuning is provided for both FM and AM. Unlike most other receivers and tuners, the Model 710 tunes in 25 kHz increments which makes for precise tuning on crowded FM bands.
Power Amp Section
Continuous Average Power Output:  20 W (13 dBW) into 8 Ω
Rated Distortion:  0,05% (T.H.D. 20 Hz - 20 kHz)
Clipping Power: 25 W (max.contiuous power per channel)
IHF Dynamic Headroom:  3 dB at 8 Ω
IHF Dynamic Power:  80 W at 2 Ω;  60 W at 4 Ω; 40 W at  8 Ω
Damping Factor:  less 100
Input  Sensitivity/Impedance:  210 mV/20 k Ω / 220 pF
Maximum Input Signal:  less 10 V
Signal-to-Noise Ratio:  93 dB ( 1 W A weighted)
Frequency Response:  20 Hz - 20 kHz  ±0,5 dB
FM Tuner Section
Usable Sensitivity:  1,5 µV
50 dB Quieting
Mono :  2,5 µV
Stereo :  30,0 µV
Capture Ratio:  4,5 dB (45 dBf)
Selectivity Alternate Channel:  78 dB
Total Harmonic Distortion
Stereo :  1 kHz
Mono :  1 kHz 50 % mod 0,2%
Signal-to-Noise Ratio:  70 dB
Am Tuner Section
Usable Sensitivity:  7 µV
Signal-to-Noise Ratio:  45 dB
Physical Section
Dimensions (W x H x D):  435 x 91 x 273 mm
Weight (net/shipping):  6 kg / 7,1 kg

Mission 700 L.E. speakers

The original Mission 700 was a landmark in the history of loudspeaker design, such was the acclaim it received and the success it achieved. In fact it is common knowledge that before the 700, budget loudspeakers were simply "boom-boxes". Now, with benefit of many years of research and refinement, Mission are able to introduce a unique, sophisticated, and high technology bookshelf system - the 700 Leading Edge. Advanced technology has been used to develop an exceptional 7 inch bass - mid drive unit. Shaped pole piece and an ultra-fine voice-coil gap combine with a rigid high mass cone, to produce an unusually extended bass response. Refined cone geometry and damping, with progressive hyperbolic suspension affords both high power handling, and inherently low coloration. This bass-mid unit is complemented by a ferrofluid cooled 19 mm dome tweeter. The system is capable of handling musical material with exceptional dynamic range, including digital masters, and remains linear even at modest power levels-unlike many nonlinear systems which, at low level, sound little better than a transistor radio.

The unusual inverted drive unit geometry, first designed by Henry Azima in the Mission 700, goes some way towards equalising the distance from the acoustic centres of the drive units to the ears of the normally seated listener. The effect of such a design is that at the crossover frequency the radiation lobe is directed up towards the listener rather than down to the floor.
The refinement goes one step further in the use of a time delayed baffle board resulting in dramatically better acoustic phase linearity, with substantial improvements in realism, dynamic, and stereo imagery. The baffle board itself is precision injection moulded in polypropylene reinforced with natural composite materials. This combines with Mission's multi-fold technique for cabinet construction to ensure phenomenal transient attack.
The Leading Edge is a high performance system offering a rare combination of accuracy, low coloration, extended dynamic range, and high power handling.

Frequency range:  35 Hz - 20,000 Hz
Frequency Response:  55 Hz - 20,000 Hz ±3 dB
Impedance Nominal:  8 ohms
Recommended Amplifiers:  20 W - 75 W / channels
Sensitivity (SPL 1m/1V):  89 dB
Tweeter :  19 mm Polymer Dome-Ferrofluid
Woofer:  177 mm Plastiflex Cone
Crossover Frequency:  3,1 kHz
Grilles: removable
Terminal Connections:  4 mm plug or wire
Dimensions (H x W x D):  380 x 210 x 210 mm
Weight:  12 kg
Cabinet Finish:  Walnut, Black

Hitachi HA-2500 amplifier

Low-distortion power amplifier
Connection facilities for two pairs of speakers
New ICs in the Equalizer
Subsonic filter that cuts out rumble and wow in the ultra-low frequencies without impairing the sound quality
LED program source indicators

Power Output (Both channels driven):
20 W/ch + 20 W/ch ( into 8 Ω , 40 - 20,000 Hz ,T.H.D. 0,07%)
23 W/ch + 23 W/ch (into 8 Ω , 1 kHz, T.H.D. 0,07%)
25 W/ch + 25 W/ch (into 4 Ω , 1 kHz, T.H.D. 0,07%)
Power Bandwidth:  20 Hz - 20 kHz
Frequency Characteristics:
Tuner, Tape :  20 Hz - 40,000 Hz  (+1, -1,5 dB)
Phono :  RIAA ±0,7 dB
Total Harmonic Distortion ( at 8 Ω )
At rated output :  less than 0,07%
At 1/2 rated output :  less than 0,05%
Intermodulation Distortion
At 1/2 Rated Output:  less than 0,05%
Input Sensitivty/impedance:
Phono :  2,5 mv /47 k Ω
Tuner :  150 mV/40 k Ω
Tape :  150 mV/40 k Ω
Output Level
Tape Output:  150 mV (phono, Tuner)
Phono Overload Level :  140 mV ( at 1 kHz, T.H.D.0,05%)
Signal-to-Noise Ratio (IHF a Network):
Phono :  70 dB
Tuner, Tape :  90 dB
Damping Factor:  30 (1 kHz, 8 Ω )
Bass Control:  ±8 dB at 100 Hz
Treble Control :  ±8 dB at 10 kHz
Loudness Contour:  =9 dB (at 100 Hz)
Subsonic Filter:  20 Hz (-6 dB/oct)
Semiconductors:  2 ICs,  25 Transitors, 13 Diodes, 2 LEDs
Power Supply:  120 V, 220 V, 240 V, 50/60 Hz
Power Consumption:  170 W (at rated output)
Dimeensions (W x H x D):  435 x 110 x 275 mm
Weight:  5,4 kg

Mitsubishi LT-5V turntable

Vertical Format Linear Tracking Fully Automatic LSI Logic Turntable Unit

1 - Linear Tracking - A Major Advance in Turntable Performance
Many disc audition problems arise because conventional tone arms swing in an arc across the disc from a single pivot. This innovative unit features linear tracking with the stylus and tone arm traveling in a straight line across the disc, foiiowing precisely the same path as the head of the cutting machine that made the disc. The improvement in performance is clearly audible, and marks a moajor step forward in turntable unit design.

2 - The Linear Tracking Mechanism
To keep the cartridge stylus always precisely at right angles to the disc groove, two sensitive optical sensors detect the slightest deviation from the proper tracking position. The unbalanced signal from the two sensors actuates a servomotor that immediately moves the tone-arm base the correct distance in towards the center of the disc. Therefore, as the groove spirals inwards, the tonearm assembly moves across with it. This system is so sensitive that it can respond accurately to the differences in the pitch at which the groove was cut  (loud passages are cut at a larger pitch). The high precision servo-motor drives the tone-arm assembly via a specially wound stainless steel wire, wire tension is kept constant by spring loading and the servomotor rotation is applied by a worm type reduction gear. This system holds the tone-arm assembly firmly in position unlike linear motors where the assembly is free to slip and slide. The entire tone-arm assembly rides on a mirror finished high precision rod of nonmagnetic stainless steel, providing stability and rigidity.

3 - Low Tracking Error Means Superb Trackability
Conventional tone arms have tracking errors of several degrees. The LT-5V tracking error is never greater than ±0,1°, a dramatic improvement in the ability of the stylus to trace the groove accurately. The result is a reduction in distortion that shows itself in better definition of the stereo sound field and a more realistic recreation of the original atmosphere of the performance, with each instrument clearly located. All cartridges will benefit from this improvement the better the cartridge, the greater the advantage.

4 - A Short, Straight Arm with Fewer resonances
Conventional arms suffer two important disadvantages. In order to reduce tracking error, they have to be made as long as possible, and they have to set the cartridge off at an angle to the pipe (usually by putting an "S" or "J" bend in the pipe). Increased length means greater effective mass or, if a lighweight material is used in an effort to reduce mass, the tone arm has a stronger tendency to resonate. The short, straight arm of the LT-5V achieves greater strength and reduced resonances using a structure of stainless steel, giving a sound that preserves the full impact of transients and excellent definition right down into the deep bass region.

5 - Improved Stereo Channel Balance
Since the stylus is always at right angles to the groove, there are effectively no unbalanced forces on the stylus. Not only does this remove the need for inside-force cancellers. It also preserves channel balance and separation, ensuring much more faithful reproduction.

6 - Vertical Configuration Improves Feedback Margins
Vibration from speaker systems can sometimes cause acoustic feedback to the stylus tip and serious loss of high-level listening quality even when it doesn't result in a continuous "howl' that prevents normal listening. The vertical turntable configuration is much less sensitive to feedback than horizontal units because the vibration from the speaker systems is at right angles to the motion of the stylus in tracking the groove.

7 - Simple,Accurate Dial-Setting of Stylus Tracking Force
The tone arm hangs vertically down, statically balanced in all three dimensions for completely stable and accurate tracking of the groove. It is therefore able to follow even warped discs - and cope with vibrations - with much less tebdency to skip out of the groove.
The vertical format has another important advantage; since the weight of the cartridge itself acts at right angles to teh tracking forcee. It has no effect on it. So once the right tracking force has been set, there is no need to re-balance and reset it when swap ping cartridges. And the simple dial-setting adjustment of tracking force could hardly be easier to use.

8 - Record Clamp and Stabilizer
A spring loaded clamp secures the disc to the vertical turntable. Hinging completely out of the way for convenience, it snaps into position positively, and applies a slight pressure that brings the disc into contact with the dished turntable mat. It thus acts as a disc stabilizer, reducing vibration and improving the crispness of bass response. The upper edge of the clamp has a scale that corresponds with the scale above the tone-arm assembly. Use these two scales to locate any track you want to play,, and to guide the stylus precisely to the lead-in groove.

9 - Double Flywheel Drive System
In addition to the flywheel effect of the turntable itself there is a second counterweight flywheel. Together, they are accurately dynamically balanced for smooth and stable rotation, with high precision bearings.

10 - Fully Electronic Auto Control
The brain of the comprehensive automatic functions is an LSI computer on a chip specially developed by Mitsubishi Electric. It takes the signals from the push-button controls and from the photoelectric sensors that detect the presence and size of the disc on the turntable, and guides the stylus unerringly to the lead-in groove, automatically choosing 45 rpm for 7" and 33 rpm for 12" discs. It also enables a number of other useful and unusual automatic functions.

11 - Optical Display
LED indicators show the movement of the tone arm in real time, whether to left or right and up and down - they cease to indicate once the stylus is on the surface of the disc. The LED tracking error indicator gives a quick and positive indication of serious tracking errors. It is also useful in checking that the arm is hanging perfectly vertical.

Drive:  Phase-locked loop belt drive by DC servomotor
Platter Diameter:  304 mm 912") diecast Al.
Olatter Weight:  1,3 kg (2lb 14 oz)
Moment of Inertia:  300 g/cm/s²
Speeds:  33 and 45 rpm adjust. ±3%
Speed Selection:  Auto/manual
Wow and Flutter:  0,045% WRMS
Signal-to-Noise ratio: 65 dB (IEC-B);  76 dB (DIN B)
Tonearm Type:  Straight universal, static balanced
Overall length:  223 mm (8-3/4")
Effective lebgth:  180 mm (7-1/8")
Tracking Error:  ±0,1°
Headshell:  GFRP (6,2 g)
Cartridge Weights:  10 - 20 g
Power Consumption:  14 W
Dimensions (W x H x D):  466 x 430 x 200 mm (18-3/8" x 17" x 7-7/8")
Weight:  12,5 kg (27 lb 8 oz)