Micro Seiki DQ-41

 Micro Seiki DQ-41

Quartz Locked PLL Direct Drive Electro Auto Lift/Stop Complete Stereo Turntable, with Rose, Ebony or Black Wooden Base and Dust Cover.

The heart of any turntable are its rotation and transmission systems. In both, the quality of materials used and the precision with which they have been manufacured determine how well the turntable performs its function.

For years, the name Micro Seiki has been synonymous with turntables machined and engineered of the finest materials. Micro Seiki Turntables have been designed to advance the state-of-the-art. And win awards for elegance. These turntables are as easy to use as they are to look at.

 Electronic  Auto End-Lift and Shut-Off System

Conventional  end-of-record lift and shut-off systems use some type of mechanical link between the tonearm and trip mechanism.

Seiki turntables have a totally electronic trip system employing a Hall-Effect sensor. Since it is devoid of all mechanical appendages or links, the tonearm possesses all the qualities of a separate manual unit, including the ability to track superbly at less than 1 gram.

The concept is simple; the execution flawless. At the end of a record, the tonearm traces the run-out grooves, increaaing its speed toward the center. The Hall-Effect electronic circuit detects this speed change and generates the necessary control signals. The viscous-damped lifter is activated to raise the arm and shut off the power to the turntable. As an added protection for your records, in the event of a power failure, the arm will lift automatically, silently and smoothly.

Direct Drive DC Servo Motor

Micro Seiki DQ-41 turntables utilize a direct-driven DC servo-controlled drive motor. The advantages of this type of motor/transmissionless system are extreme speed stability and increassed torque.  Unaffected by temperature changes and voltage fluctuations, the resultant wow and flutter components are less than 0,03% WRMS and the signal-to-noise ratio greater than 63 dB JIS (75 dB DIN-B).

PLL Quartz Speed Reference

The speed of the DQ-41 is controlled by a quartz reference and phase-locked-loop. It is so accurate, it negates the need for a stroboscopic reference.

 Low-Mass Straight Tonearm with Dual Radial Bearings

A special aluminum alloy is used to give the arm its formidable strength and exceptionally low mass. Both qualities are needed to take full advantage of today's supercompliant cartridges. The straight-line geometry assures the most accurate tracking angles as well as contributing to the arm's low mass. A pair  of precision radial bearings give the arm a lateral sensitivity of only 10 milligrams.

Even the normally-overlooked signal connectors are of the constant-wipe type, insuring contact maintenance at all times.

Skating Force Cancellation

Anti-skating is provided by a precision calibrated adjustment to axactly match vertical tracking force.

 Oil Damped Cueing

Feather-light contact between stylus and record groove is provided by the oil-damped cueing system. It is silent, smooth and, at the end of a record, completely automatic.

Headshell

Thanks to the use of carbon fibres, the headshell is as light and rigid as the arm itself. It joins the arm with a semi-integrated plug-in system that utilizes thick gold-plated wiping-type contacts. Oxygen-free copper leads are used to exclude electromagnetic influences (eddy-current lossles) resulting in exceptional transmission characteristics (improved S/N ratio)

Inert Copper Coil

An inert, oxygen-free, copper coil is at the heart of the 2-MF cartridge. Electromagnetic influences (eddy current lossles) are excluded, resulting in exceptional transmission characteristics as well as an improved signal-to-noise ratio.

 Low-Impedance Circuitry

Very low impedance circuits are used throughout the 2-MF to enhance passage of the highest audio frequencies. And to insure a generous output voltage, the magnet structures are manufactured of High -Flux Alnico V.

 Low Mass Elliptical Stylus

The specially-ground elliptical diamond stylus has an extremely small moving mass. It not only has inherently good high-frequency capabilities, but excellent tracking characteristics as well.

 Crossed Yoke

A completely separated, cross-shaped yoke is utilized to isolate the left and right-channel  magnetic fields.  This novel design is responsible for the 2-MF's unusually high separation of more than 25 dB over all frequencies.

 Genuine Wood Base

One of the best acoustical dampening materials known is wood. It is used as the base material for all Micro Seiki turntables and is available in both natural rosewood and ebony finishes.

Special feet

All Micro Seiki turntable systems are equipped with specially-developed anti-feedback feet. The chart below shows a comparison between the isolation provided by conventional rubber feet and the Micro Seiki feet. As it apparent, sub-sonic resonance is greatly reduced by the Micro Seiki design.

Specifications DQ-41

Motor

Drive System:  Quartz Locked PLL Direct-Drive DC Servo Motor

Speed:  33-1/3 and 45 rpm

Turntable Platter:  Die-cast aluminum

Diameter :  330 mm (13")

Weight :  1,5 kg (3,3 lbs)

Wow and Flutter:  less than 0,025%

Signal-to-Noise Ratio:  More than 63 dB (JIS);  75 dB (DIN-B)

Tonearm

Type:  Low static mass straight type

Lateral Sensitivity:  10 mg by Dual precision Miniature Ball Bearing

Head Shell:  H707X, Light weight, mixing Carbon Fibres, Gold plated 4-pin plug-in connector

Effective length:  237 mm (9-3/8")

Overhabg:  15 mm

Maximum Tracking Error:  less than 1,5

Range of Tracking Force Adjustment:  0 -3 g

Power Supply: 100 - 120 V, 220 - 240 V 50/60 Hz

Dimensions (W x D x H):  468 x 375 x 155 mm (18-3/8" x 14-3/4" x 6-1/8")

Cartidge GAS 2-MF (Optional)

Type:  Moving Flux High Compliance Type

Frequency Response:  10 - 25,000 Hz ±2 dB

Output Voltage:  3,2 mV (1 kHz)

Channel balance:  less than 1,0 dB (1 kHz)

Channel Separation:  more than 25 dB (1 kHz)

Dc resistance:  800 Ω

Impedance: 3 k Ω (1 kHz)

Compliance:

Dynamic : 10 x 10¯⁶ cm/dyne

Static : 25 x 10¯⁶ cm/dyne

Suitable Tracking Force:  1,3  ±0,3 g

Weight:  5,4 g

Stylus Tip:  0,3 x 0,7 mill Elliptical

Micro Seiki DD-31

 Micro Seiki DD-31

Direct Drive Electro Auto Lift/Stop Complete Stereo Turntable with Rose, Ebony or Black Wooden Base and Dust Cover

 Direct Drive DC Servo Motor

Micro Seiki DD-31 turntables utilize a direct-driven DC servo-controlled drive motor. The advantages of this type of motor/transmissionless system are extreme speed stability and increassed torque.  Unaffected by temperature changes and voltage fluctuations, the resultant wow and flutter components are less than 0,03% WRMS and the signal-to-noise ratio greater than 63 dB JIS (75 dB DIN-B).

 Low-Mass Straight Tonearm with Dual Radial Bearings

A special aluminum alloy is used to give the arm its formidable strength and exceptionally low mass. Both qualities are needed to take full advantage of today's supercompliant cartridges. The straight-line geometry assures the most accurate tracking angles as well as contributing to the arm's low mass. A pair  of precision radial bearings give the arm a lateral sensitivity of only 10 milligrams.

Even the normally-overlooked signal connectors are of the constant-wipe type, insuring contact maintenance at all times.

Headshell

Thanks to the use of carbon fibres, the headshell is as light and rigid as the arm itself. It joins the arm with a semi-integrated plug-in system that utilizes thick gold-plated wiping-type contacts. Oxygen-free copper leads are used to exclude electromagnetic influences (eddy-current lossles) resulting in exceptional transmission characteristics (improved S/N ratio)

Skating Force Cancellation

Anti-skating is provided by a precision calibrated adjustment to axactly match vertical tracking force.

 Oil Damped Cueing

Feather-light contact between stylus and record groove is provided by the oil-damped cueing system. It is silent, smooth and, at the end of a record, completely automatic.

 Genuine Wood Base

One of the best acoustical dampening materials known is wood. It is used as the base material for all Micro Seiki turntables and is available in both natural rosewood and ebony finishes.

Special feet

All Micro Seiki turntable systems are equipped with specially-developed anti-feedback feet. The chart below shows a comparison between the isolation provided by conventional rubber feet and the Micro Seiki feet. As it apparent, sub-sonic resonance is greatly reduced by the Micro Seiki design.

Specification DD-31

Motor

Drive System:  Direct-Drive DC Servo Motor

Speed:  33-1/3 and 45 rpm

Fine Speed Adjustment range:  ±6%

Turntable Platter:  Die-cast aluminum; 4 Strobo stripes

Diameter :  310 mm (12-1/4")

Weight :  1,2 kg (2,6 lbs)

Wow and Flutter:  less than 0,03%

Signal-to-Noise Ratio:  More than 63 dB (JIS);  75 dB (DIN-B)

Tonearm

Type:  Low static mass straight type

Lateral Sensitivity:  10 mg by Dual precision Miniature Ball Bearing

Head Shell:  H707X, Light weight, mixing Carbon Fibres, Gold plated 4-pin plug-in connector

Effective length:  237 mm (9-3/8")

Overhabg:  15 mm

Maximum Tracking Error:  less than 1,5

Range of Tracking Force Adjustment:  0 -3 g

Power Supply: 100 - 120 V, 220 - 240 V 50/60 Hz

Dimensions (W x D x H):  468 x 375 x 155 mm (18-3/8" x 14-3/4" x 6-1/8")

Cartidge GAS 2-MF (Optional)

Type:  Moving Flux High Compliance Type

Frequency Response:  10 - 25,000 Hz ±2 dB

Output Voltage:  3,2 mV (1 kHz)

Channel balance:  less than 1,0 dB (1 kHz)

Channel Separation:  more than 25 dB (1 kHz)

Dc resistance:  800 Ω

Impedance: 3 k Ω (1 kHz)

Compliance:

Dynamic : 10 x 10¯⁶ cm/dyne

Static : 25 x 10¯⁶ cm/dyne

Suitable Tracking Force:  1,3  ±0,3 g

Weight:  5,4 g

Stylus Tip:  0,3 x 0,7 mill Elliptical

Linn Sondek LP12

 The Linn Sondek LP12 transcription turntable is designed and manufactured to extract as much information as possible from the modern long playing record. It is, quite simply, the link missing in so many play-back systems between your ear and the reocrded performance.

The design is elegant yet functional, relying on precision machining rather than complex electronics and gadgetry to provide the highest level of performance while maintaining the ultimate in reliability.

 If you can appreciate the differences between listening to a record on a good system and hearing something that approaches live music, then the logical place to start is with the Linn Sondek LP12.

A product of integrity which offers proven value and performance.

 The Linn Sondek LP12 is specifically designed and manufactured to obtein the best reproduction from the modern high fidelity long-playing record.

General Description

The Linn Sondek LP12 transcription turntable is designed for free-standing use with the finest specialist component high fidelity sound reproduction systems.

The unit is designed for a long operating life and should, if treated properly, last longer than any other part of your hi-fi system.

 We cannot emphasise strongly enough the importance of prospective customers receiving a fair demonstration before purchase. We suggest placing any transcription turntable beside the LP12. fit same with arms and cartridges, listen to both at the same volume setting through the same system and decide for yourself which sounds more like real music.

The unit is guaranteed under the conditions which apply in the country of purchase. In addition to any statutory rights the customer may have, we undertake to replace any parts which have failed due to fault manufacture.

 Type

Precision built single speed transcription turntable mounted in a solid kiln-dried hardwood low resonance plinth system with counter-balanced hinges and moulded perspex lid.

Bearing

The LP12 employs an exclusive single point bearing running in an oil bath (world patents pending). [The hardened and ground steel spindle runs on a mirror finished hardened, ground and lapped thrust pad.]

The spindle is hardened tool steel. The thrust plate, which must withstand a pressure of 2,5 tons per square inch, is top grade steel, machined, hardened, groun, and lapped to a mirror finish. The sides of a bearing housing are lined with a hard, very low friction plastic. Between this liner and spindle is a thin film of oil. The only surface to surface contact is at the single point where the spindle  rest on the thrust plate. Since this is also the center of rotation, the velocity at the point of contact is very low. A direct result of this low velocity is low friction, negligible wear, and extremely low rumble.

 Motor

24-pole precision synchronous low noise motor. Speed is 250/300 rpm, depending on mains frequency. The motor is fully electrically and mechanically screened and isolated from the main turntable assembly.

Speed Accuracy

The synchronous motor of the LP12 locks-on to the 60 Hz AC line frequency. Over a day's time, this line frequency, and the speed of the turntable, will typically change by less than ±0,04%.

While it might be possible to obtain greater "accuracy" by using a quartz-locked servo-controlled motor, it should be pointed out that our goal is to obtain the best possible audible performance, not to build a laboratory standard rotating platform. Speed consistancy is far more important than speed accuracy. Errors in accuracy of up to three percent often go unnoticed, while rapid changes in speed of only a few hundredths of a percent are audible. By definition, a servo-controlled motor maintains its speed accuracy by constantly changing and correcting its speed.

 Drive

The platter is driven via a flat precision ground chloroprene rubber belt by a 24-pole, low noise, synchronous motor. The 24-pole design of the motor allows it to run at a relatively slow speed (300 rpm vs. 1800 rpm for a four-pole motor). The combination of the slow speed and the individually tuned motor assembly reduces rumble to a minimum. The beltdrive acts as a filter to prevent any residual motor noise from reaching the platter.  Flutter is minimized by the use of a machined metal drive pulley (concentricity 0,0004") in place of the usual cast metal or molded plastic variety.

The pulley is machined from the same material as the platter. Thus, all parts within the loop of the drive belt have the same coefficient of expansion insuring that the speed will be constant over  a wide range of operating temperatures.

 A flat precision-ground chloroprene rubber belt driven by a drive pulley mounted on the motor. Due to the materials selected, the rotating elements within the drive belt loop are such that the ratio is temperature stable. This means that a constant speed will be maintained over a wide range of operating temperatures.

Suspension

The platter and arm board are fixed to a floating sub-chassis suspended by resilient mountings in the double-damped triple point suspension.

Chassis

The main chassis is heavy gauge non-magnetic brushed satin finished stainless steel. The sub-chassis is formed from mild steel pressing welded for maximum rigidity and stove enamelled to give corrosion protection.

 Base Plate

The base plate is constructed of heavy gauge, satin finish stainless steel. The motor of the LP12 is attached directly to this non-magnetic plate. Besides providing additional hum shielding, this plate acts as a mechanical energy sink. Motor vibrations, that would have been transmitted along the belt into the system, are instead converted into harmless mechanical noise that ia dissipated over the entire surface of the stainless steel plate.

Subchassis

The platter/bearing assembly and the arm board are mounted on a rigid steel subchassis. It is isolated from the base plate, motor, and external vibrations by a fully adjustable three-point spring suspension.

Arm Board

The arm mounting board is constructed of a center ply layer sandwiched between two layers of hard board.

Base

In contrast to the typical flake board base construction, the LP12 base is crafted from solid kiln-dried hardwood. Hardwoods are chosen for their ideal resonance characteristics and stability. Provision has been made for proper arm cable dressing to control vibrations that may travel up the arm cable, by-passing the suspension.

Plater

305 mm (12") diameter non-magnetic zinc aluminium alloy die casting machined throughout with optimum peripheral mass distribution. Total weight is approximately 4,5 kg (10 lb).  A choice of mat is available: a felt type suitable for tag cueing, or a radial-ribbed thermo-plastic moulded mat for standard use.

 Rumble

Rumble is -60 dB unweighted, with reference to a 10cm/sec 1000 Hz signal. The weighted rumble measurements used by most manufactures are virtually useless in evaluating the performance of a turntable. Weighting systems effectively ignore rumble at very low frequencies. This subsonic rumble may not be as audible as rumble occuring at 200 Hz, but its side effects can be quite audible and even more serious than a little low frequency noise. Sunsonic rumble may excite arm/cartridge resonance and cause mistracking. The amplifier, trying to reproduce this rumble, wastes a great deal of power. The speaker cone is forced to move beyond its linear operating limits. The end result is increased IM Distortion. We contend that, if you must use a rumble measurement, it should be unweighted and the velocity and frequency of the reference signal should be specified. Anything less can, and often does, cover up poor performance.

 Wow and Flutter

The LP12's wow and flutter is less than 0,04% (typically, wow is less than 0,03% and flutter is less than 0,015%)

 Dimensions

445 x 355 x 140mm (17½ x 14 x 5½ in)

Approximately 7 cm (2 ½") clearance is required at the rear of the unit and approx. 25 cm (10") above the unit to permit convenient opening of the lid.

Specifications

Type:  single speed transcription turntable

Speed:  33 ⅓ rpm

Motor:  24-pole precision synchronous low noise motor

Drive:  belt-drive

Plater Type:  Non-magnetic zinc-aluminium alloy die-cast

Platter Diameter/Mass:  305 mm (12")/4,5 kg (10 lb)

Rumble:  -60 dB (unweighted)

Wow and Flutter:  less than 0,04%

Power Requirement:  220-250 V or 110-125 V, 50-60 Hz

Power Consumption:  3,3 VA

Dimensions (W x H x D):  445 x 140 x 355 mm (17½ " x 5½" x 14")

Weight:  10 kg (22 lbs)

Linn Ittok LV-II

 The Linn Ittok LV-II arm has been designed to compliment the Linn LP12 turntable. The design philosophies first implimented in the turntable; i.e., providing a means of maintaining a fixed relationship between the cartridge body and the surface of the record, have been extended to the design of the LV-II. Through the use of sensible construction techniques and very precise bearings, the Linn arm provides a very rigid connecting link between the cartridge body and the turntable.

 The Linn Itokk LV-II was designed with several performance features in mind.  First, stability. It is a coherent mechanical system designed to maintain a precise relationship between the cartridge and turntable. This is due in part to a bearing system that minimises intermittent or continuous loss of dynamic accuracy.  Second, simplicity. Dials for both tracking weight and bias force enable easy and highly accurate adjustment, making the Ittok simple to install and convenient to use.

The Ittok is particularly suitable for use with the Linn Asak DC-2100K moving-coil cartridge and enables the full performance potential of this cartridge to be realised.

The Ittok is designed not to degrade with use or require continuous adjustment. In addition it is engineered to cope with the most difficult cartridges now available and to anticipate future cartridge development.

Although designed with the Linn Sondek LP12 turntable in mind, the Ittok is suitable for use with most high quality turntables.  

 Headshell

The headshell is constructed of light weight magnesium alloy. In order to obtain the most rigid connection possible between the headshell and the arm tube, the headshell is permanently fixed to the arm tube. As you can appreciate, any method of attaching the headshell that would still allow it to be rotated would necessitate a weakening of this connection.  We do realize that this doeas limit the amount of "fine tuning" of the vertical tracking angle that you can accomplish; i.e., as you raise or lower the rear of the arm, the headshell, as viewed from the front, will no longer be parallel to the record. It is possible tp make very small changes in VTA and, in most cases, the adjustment range should be satisfactory. The relatively small gains that can be obtained by making larger adjustments to the vertical tracking angle are insignificant when compared to the degradation of the signal that would occur if the tortional rigidity of the arm was compromised. It should also be noted that the optimum VTA varies from record to record, so any VTA setting will have to be , at best , a compromise.

 Arm Tube

The arm tube is constructed of large diameter, thinwall, magnesium tubing. It should be noted that while a small diameter tube is often used to give the appearance of low mass, a large diameter tube with thin walls aill actually require less mass for the same degree of rigidity.

Bearings

The bearings , bearing housings, arm pillar, and all related parts are constructed of high grade stainless steel. Being of identical materials, all have the same coefficient of expansion. Thus, the arm is temperature stable; i.e., changes in room temperature effect all parts equally. The finely adjusted bearings will maintain proper tolerances over a very wide range of operating temperatures.

 Counterweight

The counterweight consists of two pieces, the main weight and a smaller ring that is attached with two hex key set screws. The ring should be used if a heavy cartridge is to be mounted in the arm. Lighter cartridges require only the main part of the weight. The mass of the weight was specifically chosen to allow the counterweight (with ring) to be positioned as close to the pivot point as possible when the arm is fitted with the Linn Asak Moving-Coil Cartridge.

The counterweight is used only to balance the arm, never to apply tracking force. Because of this, the arm is always dynamically balanced and any disturbances that reach the arm will tend to affect both the rear portion of the arm and the front portion of arm equally thus minimizing their effect.

 Tracking Force and Anti-Skate

To prevent disturbing the dynamic balance of the arm, tracking force and anti-skating compensation are applied by springs which are controlled by two calibrated adjustment knobs. Tracking force may be applied over the range 0 to 3 grams.

Height Adjustment

The height locking screw consist of two basic parts. The first is a steel shaft that will, when fully tightened, rigidly lock the arm in place. This rigid connection can be accomplished with only one locking screw because of the unique half moon notch cut out of the arm base. When the locking screw is tightened, you are in effect rigidly attaching the arm pillar to the base at three points, the locking screw, and each end of the notch.

The second part of the height locking screw consists of a spring loaded nylon washer. When the height locking screw is only slightly tightened, the washer aill hold the arm in position while still allowing you to adjust the arm height. This greatly simplifies the height adjustment procedure.

Specifications

Overal Length:  284 mm

Effective Length:  229 mm

Overhang:  18 mm

Tone-arm rear length:  50 mm

Friction:  less than 20 mg.

Effective Mass:  11,5 g

Cartridge Weight Range:

With Main Weight only :  2 - 10 g

With Main Weight plus Sub Weight :  5,5 - 15 g

Stylus Pressure Range:  0 -3 g in 0,1 g steps

Linn Asak MC

The Linn Asak Moving Coil Cartridge

Extending the philosophy of the turntable and arm to the design of the cartridge, it is obvious that the stylus, cantilever, and coils ahould be allowed to move freely in response to the information in the groove of the record. The rest of the cartridge should remain in a fixed position centered over the groove. This seemingly simple task is complicated by the fact that very high levels of energy are generated at the stylus tip. That energy travels up the cantilever and into the cartridge. The only way to prevent that energy from moving the cartridge body and the magnet assembly is to make the mass of the body and magnet very, very large. The most practical way to accomplish this is to use the mass of the arm and even the mass of the turntable. This is done by coupling the cartridge body very firmly to the arm.

The most significant differences between the Linn Asak and other moving-coil cartridges concern Linn's  efforts in designing a body that is rigid enough and strong enough to accomplish the task of coupling the cartridge to the arm. In order to provide  the strength necessary, the body is considerably wider than most. The unique recessed cartridge mounting holes allow the mounting screws slipping away from the body and / or the screwdriver accidentally slipping off the screws and damaging the stylus. In addition, to prevent any movement of the magnet assembly, great care has been taken to couple it very firmly to the body.

Arm Selection

If an arm other than the LV-II is to be used with the Asak, care should be taken to insure that it has a very rigid bearing assembly (knife edge or unipivots are generally not suitable), and that the headshell is wide enough to accept the 20 mm wide body of the cartridge.

Specifications

Frequency Response:  10 Hz - 50 kHz ±3 dB

Output Voltage:  0,2 mV

Balance:  ±0,5 dB

Separation:  27 dB

Impedance;  3,5 Ω

Compliance:  12 x 10¯⁶ dyne/cm

Tracking Angle:  20

Tracking Force:  1,8 to 2,2 grams

Stylus Type:  o,2 x 0,8 mil elliptical diamond

Weight:  6 grams

JVC JL-A20

 This dependable auto-return belt-drive turntable offers the multiple benefis of precision and convenience. Its uncomlicated mechanism permits the stylus to track freely, as on any first-class manual, until the stylus enters the lead-out grooves to the record, or until you trigger the Reject control. All controls are grouped at the right side to enhance ease of operation.

Features

Dependable Auto-Return/Shut-Off Operation

No-Rumble Belt-Drive

JVC 4-Pole Synchronous Motor

Practical performance at a  pleasing price

 Dependable, Belt-Drive System

A 4-pole synchronous motor and belt drive system are employed in this unit for silent and reliable operation. The nonferrous die-cast platter of the JL-A20 is spun precisely for more critical operation. This motor maintains very close tolerance speed accuracy regardless of changes in loads or power voltages.

Th and Anti-Skate Device

The tonearm features JVC's TH (Tracking Hold) system to avoid mistracking, distortion, channel imbalance and undue record wear. The anti-skate device is of  the easy-to-use knob type that lets you apply the required anti-skate force even while the arm is tracking a record. Record and stylus wear is thus reduced. Like the JL-F30, this model features the low-silhouette look abd gets you closer than you've ever been to The Musical Truth,

 Auto-Return/Shut-Off Convenience

Place the stylus on the first groove of your favorite record, then sit back and enjoy the music - leaving the rest to the automatic mechanism of this unit which sends the arm to its rest and turns off the power at the end of a record. You operate the reject lever to interrupt play and send the arm backto rest. And the oil-damped Cue lever lets you menually place the stylus on the groove of all your favorite selections, regardless of the arranged sequences of the record.

Specifications

Motor Type:  4-pole synchronous

Drive System:  Belt-drive

Speeds;  33 ⅓ and 45 rpm

Speed Change:  mechanical

Wow and Flutter: 

Less than 0,06% (WRMS);

Less than 0,08% (DIN)

Signal-to-Noise Ratio: 

below than 53 dB (IEC-B);

below than 63 dB (DIN-B)

Platter:  309 mm aluminum die-cast

Tonearm Type:  Statically balanced arm on TH System

Effective Length:  220 mm

Tracking Error:  +3°35'; -0°43'

Overhang:  15 mm

Applicable Tracking Force:  0 - 3 grams

Applicable Cartridge Weight (including headshell):  13 - 21 grams

Operation Mode:  Auto return

Power requirement:  120 V, 200 V AC 50/60 Hz

Dimensions (H x W x D):  130 x 460 x 368 mm (5-1/8" x 18-1/8" x 14-1/2")

Weight:  6 kg (13,2 lbs)

JVC L-A10

 Auto-return Belt-Drive Turntable with Stylish Lineas and Superior Performance.

Features:

Quiet and accurate belt-drive system

Precision synchronous motor

Low-mass straight tonearm

Up-front controls

Auto-return convenience

 The L-A10's design objective was to provide performance and features at a price easily accessible to anyone. Among its many features, two in particular stand out: a low-mass straight tonearm that provides excellent tracking ability and low distortion while keeping resonant frequencies at bay; and a silent and powerful belt-drive system utilizing a precision synchronous motor. The belt-drive system neatly isolates the turntable platter from vibration, and smooths rotation, so your records sound as clear as can be, without a hint of audible wow and flutter or rumble.

Another feature we've given the  L-A10 - end-of-play auto return  and shutoff - protects both record and stylus, and at the same time, provides you with the convenience you deserve. You'll also find up-front controls, including cueing, that are accessible with the dust cover down. All in all, the L-A10 represents one of the best buys on the market.

Specifications

Motor Type:  AC synchronous motor

Drive System:  Belt-drive

Speeds;  33 ⅓ and 45 rpm

Speed Change:  mechanical

Wow and Flutter: 

Less than 0,045% (WRMS);

Less than 0,075% (DIN)

Signal-to-Noise Ratio:  below than 66 dB (DIN-B)

Platter:  300 mm die-cast aluminum  alloy

Tonearm Type:  Statically balanced straight arm

Effective Length:  220 mm

Tracking Error:  +4°00'; -0°48'

Overhang:  15 mm

Applicable Tracking Force:  0 - 3 grams

Applicable Cartridge Weight (including headshell):  8,5 - 11,5 grams

Operation Mode:  Auto return

Power requirement:  120 V, 200 V AC 50/60 Hz

Dimensions (W x H x D):  420 x 115 x 368 mm (16-9/18" x 4-1/2" x 14")

Weight:  4,5 kg (9,9 lbs)

Denon DP-300F

 The DP-300F has been designed with heavier base construction for reduced vibration and improved performance. The all new tonearm has a removable headshell making cartridge replacement simple.  The standard mount headshell allows for any standard mount cartridge between 5 - 10 grams to be mounted and balanced.  The automatic startup feature allows the turntable to begin play with the touch of a button, and once play has been completed, the tonearm will be returned to the armrest gently so that the stylus and record are not damaged or scratched.  The turntable is made of rigid diecast aluminum to produce uniform rotation for smooth flutter free operation.  There is also a manual lifter mechanism that allows you to place the needle on the record wherever you want, so you can skip to a different song in the middle of a side.

 The DP-300F includes a built-in phono equalizer to connect the player to an integrated amp or receiver that does not have its own phono input. This turntable is powered by a DC servo motor and belt drive system and has rotation speeds of 33⅓ or 45 rpm.  It comes with a MM cartridge so that you can begin to enjoy your analog record collection as soon as you connect the DP-300F to your home hi-fi system.

 Refined External Design

The DP-300F's 4mm-thick cabinet wall that offers both strength and high density has been beautifully finished with a gloss coating. The straight tone arm and aluminum diecast turntable have been formed in a slim, textually attractive design. With a body width of 434mm, it combines very elegantly with full-size system components.

Fully Automatic Player

When the 30cm or 17cm record size is selected, with a simple operation the tone arm automatically moves and plays the record and then returns when playback ends. Different cartridges can be used as desired, and since fine adjustments can also be made for anti-skating and zero balance, ideal conditions for playing a record can be achieved.

Straight Tone Arm

The DP-300F's straight tone arm brings out the maximum performance of cartridges with superior tracing capabilities. The supplied cartridge can be replaced with a variety of commercially available cartridges. (Compatible cartridge weight: 5.0 - 10.0 g)

Includes High-grade MM Cartridge

 Diecast Aluminum Turntable

The DP-300F's turntable has been constructed of diecast aluminum to achieve high inertial mass for stable rotation. The vibration-resistant turntable sheet is about 5mm thick and uses hologram vibration analysis to improve its ability to hold a record.

Built-in PHONO Equalizer

Since the DP-300F includes a built-in PHONO equalizer, it can be connected directly to a mini component or integrated amp that does not have a PHONO terminal.  (ON/OFF switchable)

Manual Arm Lifter

The DP-300F is also equipped with an arm lifter mechanism to facilitate manual operation. The arm lifter makes it easy to place or remove the needle from any location on the record.

Specifications

Motor Section

Drive System:  Belt drive

Speed:  33⅓,  45 rpm

Wow & Flutter:  0,10% (WRMS)

Turntable:  Diecast aluminum

Tonearm Section

Type:  Straight

Effective Length:  221.5 mm, (8.72 inch)

Overhang:  19 mm, (0.75 inch)

Tracking Error:  Within 3°

Stylus Pressure Range:  0 – 4.0g (0.1g increments)

Compatible Cartridge Weight:  5.0 – 10.0g (excluding headshell)

Cartridge

Type:  MM

Appropriate Needle Pressure:  2.0g

Cartridge Weight:  5g

Replacement Needle:  DSN-85

Supplied Headshell Weight:  10g

(Can be replaced with dedicated shell:  PCL-310SP [Premium Silver] or PCL-310K [Black])

General

Power Supply:  AC 120 V - 220 V,  50/60 Hz

Power Consumption: 2 W

Dimensions (W x H x D):  434 x 122 x 381 mm  (17.1 x 4.8 x 15.0 inch)  including feet

Weight:  5.5 kg, 12.13 lbs