Audio-Technica AT150MLX Manual

Audio-Technica DJ udstyr AT150MLX

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Vector-Aligned stereo phono cartridges feature an original design

patented by Audio-Technica around the world. The key to this

mechanism is the two magnetic generators arranged in the shape of a

“V”. These two magnets are positioned precisely to match the positions

of the left and right channels in the stereo record groove. Major benefits

of the Vector-Aligned cartridge include outstanding channel separation,

very low distortion and superb tracking performance. Incorporating the

same essential merits as other Vector-Aligned models, the AT150MLX

features three additional technological advances:

Boron Cantilever. Its tiny, gold-plated boron cantilever provides an

extremely rigid yet lightweight platform to which the stylus is mounted.

Interestingly, the gold plating acts to damp what little resonance the

boron may produce.

MicroLine™ Stylus. The stylus used is of the latest and most

advanced design: the MicroLine™ stylus (Figure 1). More closely

resembling the cutter stylus than any previous design, this shape

produces better high frequency response with less wear or distortion

than with earlier configurations.

PCOCC Wire. A technologically advanced pure copper material is

used in Audio-Technica's exclusive “Paratoroidal Signal Generator”

(Figure 2). Together with the laminated core structure, which minimizes

loss in the high frequency region, this integrated paratoroidal generator

system operates at an efficiency significantly greater than conventional

cartridges. The use of PCOCC wire (Pure Copper by Ohno Continuous

Casting) perfects the performance of the advanced paratoroidal coil

design. A special high-temperature extrusion die produces copper with

virtually no transverse crystal barriers to impede signal transmission or

color sound. Thus, the coils of the AT150MLX transmit distortion-free

sound in which even the most subtle details are reproduced with clarity

and purity.

A mu-metal shielding plate between the left and right channels in the

generator system assure that the high level of channel separation

achieved is preserved at the cartridge output.

To further increase the accuracy of the AT150MLX's moving system,

Audio-Technica engineers have ensured against unwanted parasitic

vibration with an anti-resonance ceramic mounting base.

As a final attention to detail, even the output terminals are

constructed of PCOCC copper. This meticulous care and attention

given to every minute detail in both the vibration and generator

systems has resulted in a significant improvement in the performance

and sound quality. This superb cartridge offers audiophiles and other

serious listeners added musical enjoyment.

Preliminary Installation

Keep stylus guard down. Remove

the stylus assembly by pulling away

from the cartridge body at a slight

rearward angle (Figure 3). Place the

stylus assembly out of harm's way.

Mount the cartridge body to the

tone arm head shell.* Use the

mounting hardware supplied with the cartridge or with the turntable,

and tighten until just snug. Replace the stylus assembly briefly to check

for mechanical interference with mounting hardware. The stylus

assembly should click into place. Again remove the stylus assembly for

safekeeping.

Electrical Connections

Four terminals at the rear of the cartridge are color-coded to match

standard wiring in stereo tone ar Connect with slip-onms (Figure 4).

lugs provided on the head shell wiring. NEVER SOLDER TO

CARTRIDGE TERMINALS! Heat applied to the terminals will damage

the internal cartridge wiring.

For monaural operation, the Left

and Right signal terminals should be

connected to the monaural signal

lead, and the Left and Right ground

terminals should be connected to

the ground lead.

Final Adjustment

It is especially important that the

“overhang” and tone arm height should be exactly correct. The stylus

overhang, or distance from the stylus tip to the center of the turntable,

should be 15mm. You can check for correct overhang with the plastic

gauge to which y idge is mounted in the packaging.our cartr

Replace the stylus assembly; flip the stylus guard up. You should

be certain that the stylus assembly and cartridge body are exactly

perpendicular to the record surface, and that the cartridge is aligned

with the sides of the tone arm for best performance.

If possible, adjust the arm height so that the top of the cartridge is

parallel to the record surface when the stylus is cued down on the

record.

Connection to System

Run two shielded audio cables from the cartridge/tone arm connec-

tions on the turntable to the magnetic phono inputs on the amplifier or

receiver. Observe Left and Right channel markings.

To assure maximum performance, the lowest possible connecting

cable losses between turntable and amplifier are required. Very short

conventional cables may be used.

A separate ground wire usually comes attached to the turntable of

most electronics.

Distorted or unbalanced sound from the two phono channels often

can be traced to wires interchanged or touching at the cartridge

terminals. A reduction in output or muffled sound may result if the

stylus assembly is not fully seated. Hum from the phonograph input

can usually be traced to a bad audio cable or absence of the separate

ground wire from turntable to amplifier.

*Note: These instructions assume that you will be using this cartridge

in conjunction with a tone arm having a universal head shell. If your

tone arm has a different style head shell, follow the instructions

included with your tone arm.

AT150MLX

Vector-Aligned™

Stereo Phono Cartridge

Wide Range Vector-Aligned Vibration

System and Improved Paratoroidal Signal Generating

System featuring PCOCC Wire

Fig. 1

Fig. 2

Fig. 3

Fig. 4

Isolated PCOCC

Paratoroidal Coils

Mu-Metal Shield

Laminated Coil Core with

Unitized Pole Pieces

Vector-Aligned Dual Magnets

Nude-Mounted Microline Natural Diamond Stylus

0.3mm Diameter Gold-plated Boron Cantilever

Radial Damping Ring at Cantilever Fulcrum

Individual Compliance Adjustment Screw

Left Output (White)

Right Output

(Red)

Right Ground

(Green)

Left Ground

(Blue/Black)

Stylus

Guard

CartridgeStylus Assembly

Operating Suggestions

The low tracking force and high compliance of Audio-Technica

cartridges provide the highest level of performance available, but also

make them susceptible to damage if handled improperly.

Most stylus damage is caused by rough treatment while the tone

arm is being operated by hand. A finger should always be placed

under the tone arm finger lift, never over it. A damped cueing device

that lowers the tone arm gently to the record is found on many record

players, and should be used for greatest protection of the stylus and

records.

The stylus should be cleaned with the brush supplied with the

cartridge. Use a rear-to-front motion of the brush only.

An accumulation of dirt on the stylus indicates that the records

themselves are dirty, a condition which will shorten record and stylus

life, and reduce the potential performance of your system.

Keep records stored vertically in their jackets except when being

played, and clean each side of the record just before it is played. You'll

be amazed at how much better a clean record sounds and how much

longer it lasts.

Replacement Styli

Audio-Technica grain-oriented diamond styli are carefully selected

and polished for minimum wear to themselves and to your records.

However, after an extended period of play, even the finest diamond

stylus becomes worn. For this reason, it is best to have the stylus

inspected annually, or whenever it appears that wear or damage may

be a problem. The dealer from whom you purchased this cartridge can

supply genuine A-T replacement styli. Only A-T styli with the circle

monogram will provide the same level of performance.

Audio-Technica cartridges are protected by the following patents:

Canada Nos. 856,351 and 909,683

England Nos. 1,232,210 and 1,283,404

France No. 6,928,056

Japan Nos. 1,083,037 and 883,307

Sweden No. 347,636

Switzerland Nos. 478,502 and 505,437

U.S.A. Nos. 3,720,796; 3,761,647 and 4,075,418

Germany Nos. 1,772,685 and 1,941,569

SPECIFICATIONS AT150MLX

Frequency Response (Hz)* 10-30,000

Vertical Tracking Force (VTF)

Range (grams) 0.75 - 1.75

Channel Separation

(dB at 1kHz/10kHz) 30/20

Channel Balance (dB) 0.8

Output (mV at 1kHz, 5 cm/sec) 4

Vertical Tracking Angle†† 23˚

Stylus Shape MicroLine™

Stylus Construction Nude square shank

Cantilever Gold-plated boron

Wire Used For Coils PCOCC

Recommended Load

Impedance (ohms) 47,000

Recommended Load

Capacitance (pF) 100 – 200

Dynamic Compliance

(x 10-6 cm/dyne, 100Hz) 10.0

Cartridge Weight (grams) 8.3

Dimensions 1" x 11/16" x 11/16 "

Mounting 1/2" centers

Replacement Stylus ATN150MLX

*This model exceeds the requirements of DIN Standard 45 500 for frequency

response bandwidth and tolerance.

†DIN 45 49/AT6607 test records with bands of carefully calibrated recorded 5

amplitude (one micron equals 0.0001 cm). Program IeveIs of typical commercial

recordings are on the order of 60-70 microns.

††20˚ is lEC/DIN Standard.

One Year Limited Warranty

Audio-Technica brand products purchased in the U.S.A. are warranted for one year from date of purchase by Audio-Technica U.S., Inc. (A.T.U.S.) to be free of defects in materials and

workmanship. In event of such defect, product will be repaired promptly without charge or, at our option, replaced with a new product of equal or superior value if delivered to A.T.U.S., or an

Authorized Service Center, prepaid, together with the sales slip or other proof of purchase date. Prior approval from A.T.U.S. is required for return. This warranty excludes defects due to

normal wear, abuse, shipping damage, or failure to use product in accordance with instructions. This warranty is void in the event of unauthorized repair or modification.

For return approval and shipping information, contact the Service Department, Audio -Technica U.S., Inc., 1221 Commerce Drive, Stow, Ohio 44224.

Except to the extent precluded by applicable state law, A.T.U.S. will have no liability for any consequential, incidental, or special damages; any warranty of merchantability or fitness

for particular purpose expires when this warranty expires.

This warranty gives you specific legal rights, and you may have other rights which vary from state to state.

Outside the U.S.A., please contact your local dealer for warranty details.