ADC XLM phono cartridge

The ADC XLM cartridge - this is the only cartridge we have seen that is really capable of tracking almost all stereo discs at 0,4 grams.

The Sound Authorities go on to say: "the XLM went through the usual torture test at 0,4 grams (some models require more than a gram)….the XLM is capable of reproducing anything found on a phonograph record." "the CBS STR-100 test record showed less than ±1,5 dB variation up to 20,000 Hz … response is within ±2 dB over the entire range, and Frequency Response is exceptionally flat."

"Distortion readings, are almost without exception better than those for any other model we've tested, … the XLM has remarkably low distortion in comparison with others, …at 0,6 grams the distortion was low  - under 1,5 percent."

"The XLM could be instrumental in lowering the input noise from the first stage of a modern transistor amplifier, … the cartridge had very good shielding against induced hum."

"This would be a very hard cartridge to surpass at any price, … we found it impossible to attribute superior sound to costlier competing models,  priced as it is, it is a rel bargain in cartridges."

Specifications

Company (Year):  ADC (1971)

Body/Molding/Stylus:  Gold / Black /Black

Stylus:  RXL

Stylus Tip:  .3 x .7 mil

Stylus Mount:  Nude

Compliance:  50 cu

Tracking Force:  .4 - 1 g

Frequency Response:  10 - 25,000 Hz

Channel Balance:  2 dB at 1 kHz

Output:  0,85 mV

Channel Separation:  25 dB at 1 kHz

Inductance:  300 mH

Resistance:  625 Ω

Capacitance:  235 pF

Weight:  5,5 grams

ADC Sound Shaper Three equalizer

ADC has four Sound Shaper frequency equalizers that will improve your sound system. No matter how good it is. And at a cost that's lots less than trading in your components.

ADC Sound Shaper will improve your speakers. By extending thr true bass response, including the critical mid bass. ADC Sound Shaper will improve the relationship between your cartridge and speakers. From one of partial incompatibility to total compatibility.

They'il also eliminate rumble (low frequency overload), tape hiss and record scratches. And that only scratches the surface of what ADC Sound Shapers can do. For instance, the walls, carpeting and furniture of your listening room physically bounce sound around so that some spots have less sound than other spots. Lots less. ADC Sound Shapes will bring these "dead" spots to life.

Perhaps best of all, though, is a Sound Shaper's ability to let you re-equalize what a recording engineer mixed. If a horn section is overwhelming a piccolo, for example, you just slide the appropriate frequency lever. Presto, more piccolo. You can also vanquish a voice. Or boost a tube. Sound Shapers segment the entire spectrum of sound. To let you re-shape a sound track to your personal musical preferences. It's all the control you've ever dreamed of but never dreamed possible.

To get into equalizers, start with our Sound Shaper One which operates in five frequency ranges. Or our Sound Shaper One Ten which gives you greater control by operating in ten frequency ranges.

For more professional equalizers, there's our Sound Shaper Two MkII which functions in twelve frequency ranges with a two-channel LED meter And there's our new Sound Shaper Three Paragraphic Equalizer.

It combines all the advantages of a graphic equalizer with all the advantages of a perametric equalizer. Twelve primary frequency controls per channel. Plus twenty-four ancillary control positions per channel. The Sound Shaper Three is the ultimate in controlling and creating with your stereo system.

Take the ultimate step up in sound, without trading in a thing.

How To Trade Up Your Receiver, Tuner, Amplifier, Turntable, Cartridge And Speakers Without Trading In A Thing

ADC 1700DD turntable

The tonearm you'll find on the ADC 1700DD reduces mass and resonance to new lows. So the music you hear comes out pure and clean. Our engineers have combined the latest advancements of audio technology to create the amazing 1700DD, the first low mass, low resonance turntable.

The famous LMF carbon fibre tonearm was the model far the sleek black anodized aluminum tonearm found on the ADC 1700DD. The headshell is molded carbon fibre, long known for its low mass to high tensile strength ratio. The viscous cueing is a gentle 4 mm/sec., and the tempered spring anti-skate adjustment is infinitely variable to 3,5 grams. The pivot system uses stainless steel instrument bearings, which are hand-picked and perfectly matched to both the outer and inner races for virtually frictionless movement. All this makes it the best tonearm found on an integrated turntable.

The base on the ADC 1700DD turntable is constructed of a highly dense structural foam which absorbs and neutralizes resonance and feedback. The speed selection control is an electronic microswitch which will respond to your lightest touch.

Supporting this resonance-cancelling base are energy absorbing, resonance-tuned rubber suspension feet. These suspension feet help to stabilize the base while controlling resonance.

The motor in the ADC 1700DD is also present standard of excellence: Direct Drive Quartz Phase-Locked Loop. A quartz crystal is used in the reference oscillator of the motor. An electronic phase comparator constantly monitors any variance in the speed, making instantaneous corrections. Even when out of the Quartz-Locked mode, the optical scanning system keeps drift at below 0,2%  Wow and flutter are less than 0,3% Rumble is on incredible 70 dB DIN B

The result of all these breakthroughs is pure, uninterrupted enjoyment.

ADC LMF's Tonearms

 The ADC LMF  Carbon Fibre Low Mass Tonearms

The LMF-1 has an integrated head for lowest mass.

The LMF-2 has a removable head.

 We chose carbon fibre because of its low mass to high tensile strength ratio. Then we were able to further lower the mass by abandoning the traditional tubular shape and engineering the fully tapered profile. Carbon fibre has yet another asset which anyone with a serious love of quality music reproduction will love. The inherent properties of the material are antiresonant.

The combination of a fine cartridge and the LMF low mass tonearm will not interact with typical building resonant frequencies or with typical record warp frequencies. The LMF tonearms are styled in mat-black to blend into the design of any high quality turntable.

 The cueing is viscous damped in both directions for optimum stylus care. Tracking forces are calibrated in 1/10 th gram increments with a precision click-stop dial. Anti-skate adjustments are infinitely variable to 2 grams.

The LMF tonearms each come with three cylindrical counterweights to enable you to achieve zero balance with minimum effective tonearms mass, regardless of the weight of your favorite cartridge even up to 11 grams. 

 The LMF-2 has a removable head.

This allows the audiophile whose tastes require alternative phono cartridges to make premounted changes in seconds, both permit the use of the highest compliance cartridges with lowest tracking forces.

 The pivot system uses stainless steel instrument bearings, which are hand picked and perfectly matched to both the outer and inner races for virtually frictionless movement without the vulnerability to damage found with typical "knife-edge" bearing sytems.

 Specifications

Tonearm Lenght:  237 mm (9,33") Pivot to stylus Tip

Head Offset Angle:  20 °

Stylus Tip Overhang:  15 mm ( ,590")

Tracking Angle Error:  Zero error at 82 mmR (3,2"R)

Anti-Skate Adjustment:  0 to 2 grams

Height Adjustment Range:  35 mm (1⅜") to 80 mm (3⅛") from base to cartridge mounting surface

Rear Clearance Radius:  76 mm (3")

Tonearm Overall Length:  313 mm (12.33") rear to stylus Tip

Cartridge Weight Range [LMF-1 / LMF-2]:  4 - 11 grams / 3 - 11 grams

Zero Balance Weights [LMF-1 / LMF-2]:  7, 15 and 30 gram / 15, 30 and 45 gram

Stylus Force Range:  Calibrated 0 to 1,5 gram in 0,1 steps

Bearings Type:  Instrument type stainless steel ball bearings factory adjusted for maximum stability and low friction angular contact

Effective Arm Mass[LMF-1 / LMF-2]:  5,5 grams / 8 grams

Arm Wiring:  18 pF per channel

Lead Wires (stereo):  220 pF per channel (normal)

leadWires (CD-4):  100 pF per channel (available accessory)

Resonances

Arm and Head Material:  Non-resonant Carbon Fibre molding

Counterweight Assembly:  Elastometric mounting

Arm-Cartridge Resonance:  Nominal 10 Hz with typical high-compliance cartridges

Tonearm Lifter

Cue Control:  lever Control

Damping:  Viscous oil daamped in both Up and Down directions

Height Adjustment:  Factory adjusted; adjustable if required

ADC ALT-1

 The recent success of ADC's foray into the component tonearm business with the LMF-1 seems to have prompted the release of a less costly version, whereby the tapered carbon-fibre tube of the LMF has been replaced by aluminium and the end product labelled the ALT-1. this detachable headshell arm is also used in a similar form in the 1600 and 1700 turntables. The counterweight assembly is shorter than that on the LMF-1, and is of a rotating scale rether than the more complex calibrated dial type. The arm is supplied with a simplified sliding base compatible with SME fixing centres which made for easy setting up and alignment (the SME type base is an extra with the LMF-1).

 Proving not to be as well adjusted as we would have liked the horizontal bearing was rather slack and showed a moderate if not particularly low friction of 40 mg. However biasing was fine, and downforce calibration very good. The resonance graph revealed an untidy characteristic, although as the modes were well-controlled the result was in fact above average. However, if this is compared with the new graph for the LMF-1, the latter's superior performance in this department is only too apparent, albeit at twice the price. Lead capacitance was 180 pF, which is fairly high and may be worth bearing in mind with some cartridges.

 The value is quite good, and the fact that there are few low mass arms around at this price level works to the ALT-1's advantage, since the more compliant cartridges should work well in this model.

On a good turntable the sound quality produced by this arm was judged as above average, despite some imprecision of stereo imaging.

Specifications

Tonearm length:  237 mm (9,33') Pivot to stylus tip

Cartridge Offset Angle:  24,6°

Stylus Tip overhang:  19 mm (0,760")

Zero Tracking Angle Error:  at 69 mm (1,7") and 129 mm (5,06")

Maximum Tracking Angle Error:  1,25° at 60, 94 and 146 mm (2,38", 3,69" and 5,75")

Cartridge Weight Range:  4 to 11 grams

Stylus Force Range:  Calibrated 0 to 4 in ¼ g steps

Bearings Type:  Stainless steel ball bearings

Effective Arm Mass:  7,0 grams with counterweight (set for ADC XML cartridge)

Anti-Skate Range:  0 to 4 grams

Arm Wiring:  18 pF per channel

Lead Wires (stereo):  220 pF per channel (normal)

Lead Wires (CD-4):  100 pF per channel (available accessory)

Tonearm Lifter

Cue:  lever control

Damping:  Viscous oil damped

Height Adjustment:  Lifter is factory adjusted

ADC 10E Mk II

 With so many cartridges on the market, it'w easy to get confused. Unless you choose one with an outstanding track record.  Like the ADC 10/E Mark II.  Widely acclaimed as the "Critic's Choice", it is crafted by hand using our exclusive induced magnet design.

 The 10/E Mark II recreates sound faithfully. And tracks perfectly at the lowest possible pressures for optimum fidelity and long record life. It is as durable as any cartridge made regardless of price, and can be used with virtually and model changer or tonearm.

So end "cartridge confusion" forever by insisting on the ADC 10/E Mark II. For $59.50, you won't find a souder value.

Specifications

Type:  Induced Magnet

Output:  4 mV at 5,5 cms/sec. recorded velocity

Tracking Force:  ½ to 1½ grams

Frequency Response:  10 Hz to 20 ,000 Hz  ±2 dB

Channel Separation:  30 dB from 50 Hz to 12,000 Hz

Compliance:  35 x 10⁻⁶ cms/dyne.

Vertical Tracking Angle:  15"

Recomm. Load Impedance:  47,000 Ω nominal

Elliptical Stylus Tip: 

Contact Radius :  .0003"

Lateral Radius :   .0007"

Mass:  6,50 g

ADC XLM Mk II

The XML MkII Improved shares many of the virtues of the XLM MkIII Improved. Including excellent tracking ability and channel separation, high definition of musical passages and low record wear, plus the revolutionary Omni-Pivot System. The XLM MkII Improved also features a Diasa stone; a highly polished elliptical diamond tip fused to a sapphire base. Low effective tip mass is achieved by mounting the Diasa stone to a non-tapered hollow tube cantilever. The XLM MkII … a sound investment.

Specifications

Frequency Response:  15 Hz - 24 kHz ±1,5dB

Sensitivity:  0,9 mV/cm/sec.

Channel Balance:  1 dB

Channel Separation:  26 dB at 1 kHz;  15 dB at 10 kHz

Inductance:  350 mHy

Resistance:  625 ohms

Load Resistance:  47 kohms

Tracking Force:  ¾ - 1½ grams

Stylus Assembly:  Nude Diasa, Elliptical .0003" x .0007"Diamond, mounted to a hollow cantilever.

Cartridge Body Color:  Black and Gold

Stylus Color:  Black

Shielding:  Annealed MuMetal Case

Cartridge Weight:  5,75 grams

ADC QLM 36 - 34 Mk III

The ADC QLM 34 Mk III Series

The QLM 34 Mk III Series cartridges offer the hi-fi listener maximum stereo performance with minimum record wear. Of course they all feature ADC's patented Induced Magnat design for ultra low effective tip mass. It's high quality sound for a low investment.

Specifications

Frequency Response:  20 Hz - 20 kHz ±2dB

Channel Separation:  24 dB at 1 kHz;  15 dB at 10 kHz

Tracking Force:  1,5 to 3,0 grams

Stylus Assembly:  Bushed, Elliptical .0003" x .0007"Diamond, mounted to a hollow cantilever.

Cartridge Weight:  5,75 grams

The ADC QLM 36 Mk III Improved cartridge utilizes many of the sophisticated design concepts of the XLM Mk II Improved: the patented ADC Induced Magnet design, long life Omni-Pivot System, and a low mass Diasa tip. These features and more make the QLM 36 Mk III a great buy at a moderate price.

Specifications

Frequency Response:  15 Hz - 20 kHz ±2dB

Channel Separation:  24 dB at 1 kHz;  15 dB at 10 kHz

Tracking Force:  1,2 gram ±0,3 gram

Stylus Assembly:  Nude Diasa, Elliptical .0003" x .0007"Diamond, mounted to a hollow cantilever.

Cartridge Weight:  5,75 grams

ADC CD-100X (1985)

The model CD-100X utilizes five servo circiuts:

Focal control servo

The astigmatic method is employed for the focus control which utilizes the fact that routing the reflected laser light through a semi-cylidrical lens changes the shape of the bean in accordance with the distance.

Tracking servo

Tracking servo is required to chase disc pit columns since CD systems do not have a guide to lead laser beam to the pit. The model CD-100X employs 3-beam tracking servo system.

Sled servo

The sled servo serves for dual purpose - to gradually move back and forth the entirely of the laser pickup in accordance with the procession of disc playing; and to move it quickly for searching tracks. The lens of the laser pickup is able to travel at a small distance to follow the pits when playing with the entire pickup stopped. As it approaches the limit of the travelable range, DC components come to be contained in the tracking servo signals. The sled servo acts to detect the DC components and maintains the lens to be in the middle of the moveable range, namely to maintain the DC component to be zero.

Auto Power Controller (APC) circuit

The APC circuit is provided to maintain the constant laser output level in spite of the variation in temperature etc. The monitor diode located in the close proximity of the lens feeds back the variation to keep the current flowing through the diode constant.

Constant Linear Velocity (CLV) servo circuit

Unlike analog records, the rotation of compact disc is 500 rpm in inner area and 200 rpm in outer area. The CLV servo acts to maintain the proper rotation of the motor. The reference to determine if the rotation is too fast or too slow depends upon the coincidence of the phase of the RF signal to U301 and the reference clock signal.

The laser pickup used for the model CD-100X comprises six photo diodes A to F, diodes A to D, consisting actually of one single diode which is divided vertically and horizontally into four parts, for signal detection and diodes E and F for tracking servo. Since the laser light scintillated onto the surface of compact disc is turbulently reflected by pit area and entirely reflected by no pit area, the digital signals in disc can be read out by detecting the reflected laser light.

Specifications

Audio Section

Frequency response: 5 - 20 kHz ±0.5 dB

Total Harmonic Distortion: 0.004%

Dynamic range: 95 dB

Output level: 2 V rms

Signal-to-noise ratio: -90 dB V

Channel separation: 90 dB at 1 kHz

Output impedance: 600 Ω

Internal system

Optical pickup: 3-beam laser

D/A conversion: 16-bit linear

Filter: Seventh order passive filter

Error correction: CIRC dual error correction system

Functions

Music search: SKIP buttons

Fast forward/reverse: FF and REV buttons

Remaining time display: REMAINING key

program memory function: 16 selections, random

Repeat: of one progral, or all contents

Disc loading: Motor driven, horizontal loading

General

power requirements: 100 - 120 V, 220 - 240 V, 50/60 Hz

Power consumption: 12 W

Dimensions (W x H x D): 341 x 88 x 293 mm (13-7/16" x 3-7/16" - 11-9/16")

Weight: 3.3 kg (7 lbs. 5 oz)

ADC Accutrac 4000

The world's first computerized single-play turntable. With computerized programming,  you can  hear the tracks on a record in any order you like, as often as you like, even skip the tracks you don't like. And you can do it all by remote control.

The Accutrac 4000 features a computerized control panel, a'seeing" cartridge with infra-red electro optics, a "hands-off" tone arm, electronically controlled direct drive motor, a cordless remote transmitter. LED indicator receiver and integrated circuitry to eliminate cumbersome mechanical parts. The Accutrac 4000 combines the latest breakthroughs in MOS computer circuitry and the latest advancements in direct drive technology to create the State-of -the-Art for direct drive turntables.

 The turntable with a memory

We started by replacing a lot of noisy mechanics with a neat little computer. Out came standard components in went the latest breakthrough in MOS computer circuitry.  So all Accutrac's operations are controlled and programmed far more quickly and efficiently than any other automatic turntable.  The control panel is designed for you to select up to 13 tracks in any order you want to hear them, and a 24 selection memory bank allows for programmed repeats.

The motor that keeps an eye on itself.

We replaced the conventional belts, whels and pulleys with an electronically controlled direct drive system that keeps wow and flutter to a completely inaudible 0,03% and rumble at -70 dB. The motor contains electronic speed-sensing circuits, which keep a constant eye on the accuracy of the massive 12 inch diecast turntable's speed, and instantly corrects any error.  There's also a speed tuning circuit that lets you vary the speed over 5%. A glance through the stroboscope provides a reliable speed check.

 What you hear is as incredible as what you see.

Because the Accutrac servo-motor which drives the tonearm is decoupled the instant the stylus goes into play, both horizontal and vertical friction are virtually eliminated. That means you get the most accurate tracking possible and the most faithful reproduction.

 The tonearm you never touch.

We did some more eliminating. Out went the noisy linkages that power automatic arms from the main turntable drive motor. Out went velocity-sensing mechanical arm-trip mechanisms. Out went all the clumsy cams and gears.  Instead. Accutrac's tonearm is moved by its own electro-optically controlled servo-motor. It responds instantly and silently to your programme in the turntable's memory bank.

Tracking error is minimised by the arm's 237 mm (9 ½ ") effective length, and horizontal and vertical bearing friction has been reduced to the negligible level of 5 -7 mg, due to Accutrac's new ball race and pivot system.  From the instant the stylus touches the record, the arm is totally decoupled from the servo-motor and controls, so it always track the groove with perfect freedom.

 The cartridgebthat knows where it's going.

Accutrac has the most advanced carteidge in the world.

The ADC LMA-1

It scans the surface of the record with a tiny bearm of light from a soild-state infra-red generator.

When the beam is focused on the record, closely spaced grooves scatter the light, while the smooth surface between the tracks reflects the arm amechanism. This system ensures that the tonearm selects the right track quickly and smoothly, while accuately guaging where it begins and ends. The low mass cartridge with its elliptical stylus, features the induced Magnet system on which ADC built its enviable reputation.   It combines a strong, accurate, signal output with a ¾ to 1 ½ gram tracking ability.

The integrated design of the tonearm and cartridge results in minimal arm mass and an ideal tonearm resonance between 8 - 10 Hz

It's all at your command.

As you see, Accutrac has some very intriguing features, quite apart from the turntable. What looks like a pocket calculator is actually a cordless command module. So you have remote control. The sculptured space-age object is the receiver for the turntable's memory bank. It's  "winking eye" tells you that your commands have been received.  Then you just sit back and enjoy what we hope you'll agree is the main attraction; the sheer excellence of the sound reproduction.

SPECIFICATIONS

Motor Drive Sytem:  Low speeed, electronically controled, D.C. brushless direct drive motor

Speeds:  33½ and 45 RPM (electronic speed change)

Variable Pitch Controls:  ±5% range (individual control for each speed)

Wow and Flutter:  Less than 0,3% WRMS (DIN45507) ±0,042% weighted zero to peak

Rumble:  Better than -70 dB (DIN 45539B), -50 dB (DIN45539A)

Platter:  Aluminium alloy, dynamically balanced

Diameter :  306 mm

Weight :  1,4 kg

Tonearm Type:  Tubular "S" shaped, statically balanced arm, direct readout, decoupled counterweight electronically controlled cue, pause and muting operation, anti-skate control.

Effective Length:  237 mm

Overhang:  15 mm

Horizontal Friction:  5 - 7 mg

Vertical Friction:  5 - 7 mg

Offset Angle:  21°

Tracking Force:  0 - 4 g

Resonance: 8 - 10 Hz (LMA-1 cartridge)

Cartridge:  ADC LMA-1 low mass, induced-magnet (U.S. Patent 3294405), electro-optical sensing system, high energy magnet structure.

Output:  3,5 mV (5,5 cm/s)

Tracking Range:  ¾ - 1 ½ g

Frequency Response:  10 Hz - 24 kHz (±2 dB)

Separation Channel:  26 dB

Load Resistance:  47 k Ω

Stylus:  Elliptical Diamond

Remote Command:  Wireless/Infrared with LED confirm on receptor

Dimensions (W x D x H):  470 x 441 x 152 mm

Weight:  9 kg

Finish:  Teak plinth and base plate with clear perspex dust cover.