Shure M44G - User Manual

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222

HARTREY AVE..

EVANSTON.

IL. 60204 U.S

TWX: 910-231.0048 TELEX: 72-4381

THE PREMIER FAMILY OF STEREO SOUND REPRODUCERS

STEREO

DYNETICO

M44G

PHONOGRAPH

CARTRIDGE

CARTRIDGE AND STYLI SPECIFICATIONS

?Optional 33-1/3 rpm MONO-LP Stylus: Set amplif~er to "MONO" or

"A+B."

ttoptional 78 rpm Stylus: Set ampllfler to "MONO" or "A+B."

*Output voltages given for stereo cut record. For MONO cut record,

output voltage at both left channel and right channel cartridge terminals

will be 71% of

flgures above.

**Tracking

forces greater than maximum ind~cated should not be used.

NET WEIGHT: 6.5 grams

INDUCTANCE: 720

millihenries

DC RESISTANCE: 630 ohms

OPTIMUM LOAD:

47,000 ohms resistance in parallel with 400 to 500 pico-

farads total capacitance per channel. Load resistance can be up to 70,000

ohms with almost no audible change

In frequency response. Total capaci-

tance includes both tone arm

wirlng and amplifier input circuit.

MONOPHONIC OPERATION: Set tunction switch on

ampllfler to "MONO"

"A+B." If ampllfler is not equipped with this sw~tch, connect left and

right channels in parallel.

CONNECTIONS (see Figure 1): Right "hot" lead (usually red) to "R," right

ground (usually green) to "RC." Left "hot" lead (usually white) to

"L,"

left ground (usually blue) to "LC

If metal head is causing ground loop

hum, remove the ground tab. The

~netallic cartridge shield is disconnected

from the right channel

g~ound by the removal of the ground tab.

CAUTION: Do not make solder

connection to cartridge terminals.

STYLUS REPLACEMENT (see

Fig-

ure

2):

Grasp molded housing of

GROUND

TAB

stylus and gently pull forward

out of cartridge. Insert replace-

GROUND

ktkL

,,,,

TERMINAL

ment stylus into socket and press

GROUNDED

until housing mates with cartridge

TERMINAL

CASE

case. FIGURE

MOUNTING

f12.7

(112

in.)

mounting centers]:

Mounting screws are provided.

1. Remove stylus guard and stylus

(see Stylus Replacement).

NUG

15 mlcrons

(.0006

in.)

Spherical

NU-lt

microns

LOO1

in.)

Spherical

N44-377

microns

(.0025

in.)

Spher~cal

2. Connect leads to cartridge (see

Figure

1).

3. Lay cartridge in shell and align

mounting holes on side of car-

tridge with holes or threads in

shell. Follow turntable manu-

facturer's instructions to mount

cartridge in tone arm or plug-in

shell.

Reinsert stylus (see Stylus Re-

placement).

FIGURE

RECOMMENDED STYLUS CLEANING:

Use a camel's hair brush (No. 2 size

or smaller), trimmed to approximately 6 mm

(1/4 in.), dipped in alcohol or

an alcohol-distilled water solution.

Commerc~al cleaning solutions may cause

stylus damage or corrosion. Always brush stylus from back to front; never

brush or wipe stylus from front to back or side to side.

TO PRESERVE STYLUS LIFE:

1. Follow turntable or tone arm instructions when adjusting antlskating

force.

2. Do not handle the tone arm while it is in operation since this may

cause the arm to sweep across the record.

If it is necessary to manually place the tone arm in the record groove

while turntable is rotating, release it as soon as the stylus engages the

record groove.

4. Correct improper set-down adjustment or malfunction of the turntable

changing mechanism to prevent the stylus from striking the edge of the

turntable or record. Do not stack more records than turntable

rnanufac-

turer recommends.

5. Take care to properly insert the stylus into the cartridge assembly and

the

cartridge

and shell assembly into the tone arm receptacle.

6. Use proper vertical

tracklng force setting for each cartridge.

Do not use badly warped, cracked or imperfect records.

When dusting the turntable protect the stylus with the stylus guard.

SPECIAL NOTE:

To maintain the

orlginal performance standards of your

cartridge, be certain

that any replacement stylus you buy bears the follow-

ing certification on the package: "This Stereo

Dynetic@ stylus is preclslon

manutactured bv Shure Brothers Inc." AVOID INFERIOR IMITATIONS. THEY

Gray

Dark

Blue

Dark

Green

WILL SERIOUSLY DEGRADE THE PERFORMANCE OF YOUR CARTRIDGE.

ALL GENUINE "DYNETICO" STYLI ARE MANUFACTURED BY SHURE

BROTHERS INC. LOOK FOR THE NAME SHURE ON THE STYLUS GRIP.

For more information on your Shure stylus, write for pamphlet: "Don't

penny-wise and sound foolish." (AL633)

FULL ONE-YEAR WARRANTY: Shure Brothers lncorporated ("Shure"),

222 Hartrey Avenue, Evanston, Illinois 60204, warranls to the owner of

th~s

product that it

will

be free, in normal use, of any defects In workmansti~p

and inaterials for a per~od of one year from date of purchase. You should

relaln proof of date of purchase. Shure is not liable {or any consequential

damages.

If this Shure product has any defects as descr~hed above, care-

tully repack the unlt and return it prepaid to:

Shure Brothers lncorporated

Attention: Service Department

1501 West Shure Drive

Arlington Heights, Illinois 60004

If you are not In the United States, return the unit to your dealer 01-

Authorized Service Center for repair. The unit w~ll be repaired or replaced

and returned to you promptly, and if it cannot be

repalred or replaced,

you may

clecl to receive a refund. Th~s warranty does not include stylus wear.

PATENT NOTICE: Cartridge and

stylua manufactured under one or more

of the following U.S. patents: 3,055,988, 3,077,521, 3,077,522, and 3,463,889.

1981, Shure Brothers Inc.

27A1230 (U D)

Printed

~n U.S A.

9.5 mV

20,000

within

kHz

3/4

grams

c~ii/sec

400

3/4

urallis

grams

14.3

cm/sec

400

grams

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Summary

Cartridge and Stylus Specifications

Technical Specifications

Details output voltage, frequency response, channel balance, separation, tracking force, trackability, weight, and impedance.

Connections and Wiring

Instructions for connecting the cartridge to the tone arm and wiring, including ground loop hum prevention.

Stylus Replacement and Mounting

Guidance on how to safely replace the stylus and mount the cartridge in the tone arm shell.

Maintenance and Care

Procedures for cleaning the stylus and tips to preserve stylus life and cartridge performance.

Important Notes and Warranty

Special notices regarding genuine replacement styli and details of the full one-year warranty.

Summary

Cartridge and Stylus Specifications

Technical Specifications

Details output voltage, frequency response, channel balance, separation, tracking force, trackability, weight, and impedance.

Connections and Wiring

Instructions for connecting the cartridge to the tone arm and wiring, including ground loop hum prevention.

Stylus Replacement and Mounting

Guidance on how to safely replace the stylus and mount the cartridge in the tone arm shell.

Maintenance and Care

Procedures for cleaning the stylus and tips to preserve stylus life and cartridge performance.

Important Notes and Warranty

Special notices regarding genuine replacement styli and details of the full one-year warranty.

The Shure M44G Stereo Dynetic® Phonograph Cartridge is a high-quality audio component designed for exceptional sound reproduction from vinyl records. As part of "The Premier Family of Stereo Sound Reproducers," it is engineered to deliver a balanced and clear audio experience for both stereo and monophonic playback.

Function Description

The M44G cartridge converts the mechanical vibrations from a record's groove into electrical signals, which are then amplified and played through a sound system. It utilizes a "Dynetic" design, a term Shure uses to describe its moving magnet cartridges, known for their robust construction and reliable performance. The cartridge is designed to be mounted on a turntable's tonearm, where its stylus tracks the record grooves. The M44G is versatile, offering different stylus options (N44G, N44-1, N44-3) to accommodate various record types, including standard 33-1/3 rpm LPs and 78 rpm records. Its primary function is to provide accurate and detailed sound reproduction, ensuring a faithful translation of the recorded audio.

Important Technical Specifications

The M44G cartridge boasts several key technical specifications that contribute to its performance:

Output Voltage:
- N44G (Gray, 15 microns/0.0006 in. Spherical): 6.2 mV at 5 cm/sec peak recorded velocity (1 kHz).
- N44-1 (Dark Blue, 26 microns/0.001 in. Spherical): 9.5 mV at 5 cm/sec peak recorded velocity (1 kHz).
- N44-3 (Dark Green, 64 microns/0.0025 in. Spherical): 9.5 mV at 5 cm/sec peak recorded velocity (1 kHz).
- Note: For mono cut records, the output voltage at both left and right channel cartridge terminals will be 71% of the figures above.
Frequency Response: 20 to 20,000 Hz for all stylus types, with a flat response within 2 dB.
Channel Balance: Within 2 dB.
Channel Separation: 20 dB minimum.
Tracking Force:
- N44G: 0.75 to 1.5 grams.
- N44-1: 1.5 to 3 grams.
- N44-3: 1.5 to 3 grams.
- Important: Tracking forces greater than the maximum indicated should not be used.
Trackability (cm/sec peak recorded velocity):
- N44G: 11.3 cm/sec at 400 Hz (at 0.75 grams tracking force).
- N44-1: 14.3 cm/sec at 400 Hz (at 1.5 grams tracking force).
- N44-3: 14.3 cm/sec at 400 Hz (at 1.5 grams tracking force).
Net Weight: 6.5 grams.
Inductance: 720 millihenries.
DC Resistance: 630 ohms.
Optimum Load: 47,000 ohms resistance in parallel with 400 to 500 picofarads total capacitance per channel. Load resistance can be up to 70,000 ohms with almost no audible change in frequency response. Total capacitance includes both tonearm wiring and amplifier input circuit.
Mounting Centers: 12.7 mm (1/2 inch).

Usage Features

The Shure M44G is designed for straightforward installation and flexible use:

Monophonic Operation: For playing mono records, the amplifier's function switch should be set to "MONO" or "A+B." If the amplifier lacks this switch, the left and right channels should be connected in parallel.
Connections: The cartridge features clearly labeled terminals for easy connection:
- Right "hot" lead (usually red) to "R."
- Right ground (usually green) to "RG."
- Left "hot" lead (usually white) to "L."
- Left ground (usually blue) to "LG."
- A ground tab is provided, connecting the right channel ground terminal to the case. If a metal headshell causes ground loop hum, this tab can be removed to disconnect the metallic cartridge shield from the right channel ground.
- Caution: Do not make solder connections directly to the cartridge terminals.
Stylus Replacement: The stylus is easily replaceable. To remove, grasp the molded housing and gently pull it forward out of the cartridge. To insert a new stylus, press it into the socket until the housing mates with the cartridge case.
Mounting: Mounting screws are provided. The process involves removing the stylus guard and stylus, connecting leads, aligning the cartridge in the headshell, and then reinserting the stylus. Users should follow the turntable manufacturer's instructions for mounting the cartridge in the tonearm or plug-in shell.
Stylus Options: The availability of N44G, N44-1, and N44-3 styli allows users to optimize playback for different record types and tracking force preferences. The N44-1 is an optional 33-1/3 rpm MONO-LP stylus, and the N44-3 is an optional 78 rpm stylus, both requiring the amplifier to be set to "MONO" or "A+B."

Maintenance Features

Proper maintenance is crucial for extending the life of the M44G cartridge and its stylus, ensuring optimal performance:

Recommended Stylus Cleaning: Use a camel's hair brush (No. 2 size or smaller), trimmed to approximately 6 mm (1/4 in.), dipped in alcohol or an alcohol-distilled water solution. Commercial cleaning solutions may cause stylus damage or corrosion. Always brush the stylus from back to front; never brush or wipe from front to back or side to side.
Preserving Stylus Life:
1. Follow turntable or tonearm instructions when adjusting antiskating force.
2. Do not handle the tonearm while it is in operation, as this may cause the arm to sweep across the record.
3. If manually placing the tonearm in the record groove while the turntable is rotating, release it as soon as the stylus engages the groove.
4. Correct improper set-down adjustment or malfunction of the turntable changing mechanism to prevent the stylus from striking the edge of the turntable or record. Do not stack more records than the turntable manufacturer recommends.
5. Take care to properly insert the stylus into the cartridge assembly and the cartridge and shell assembly into the tonearm receptacle.
6. Use the proper vertical tracking force setting for each cartridge.
7. Do not use badly warped, cracked, or imperfect records.
8. When dusting the turntable, protect the stylus with the stylus guard.
Genuine Stylus Certification: To maintain original performance standards, any replacement stylus must bear the certification: "This Stereo Dynetic® stylus is precision manufactured by Shure Brothers Inc." Users are warned to avoid inferior imitations that will degrade performance. Genuine "Dynetic" styli are manufactured by Shure Brothers Inc., and the name "SHURE" should be visible on the stylus grip. Shure offers a pamphlet, "Don't be penny-wise and sound foolish" (AL633), for more information on their styli.
Warranty: Shure Brothers Incorporated provides a full one-year warranty from the date of purchase, covering defects in workmanship and materials under normal use. Proof of purchase should be retained. The warranty does not cover stylus wear. If a product is defective, it should be carefully repacked and returned prepaid to Shure's Service Department. For international customers, units should be returned to the dealer or Authorized Service Center.

The Shure M44G is a reliable and high-performing phonograph cartridge, ideal for audiophiles seeking accurate and enjoyable vinyl playback. Its robust design, detailed specifications, and user-friendly maintenance guidelines ensure a long lifespan and consistent audio quality.