Shure M91GD User Guide
222
HARTREV
AYE..
EVANSTON.
IL.
8
MICROPHONES AND ELECTRONIC COMPONENTS
AREA
CODE
3121866.2200 . CABLE:
TWX:
910 231-0048 TELEX: 72.4381
60204 U.S.A
SHUREMICRO
THE PREMIER FAMILY OF STEREO SOUND REPRODUCERS
STEREO DYNETIC@
M91GD
CARTRIDGE AND STYLI SPECIFICATIONS
PHONOGRAPH CARTRIDGE
toptional 78 rpm Stylus:
*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 figures above.
**Tracking forces greater than
NET WEIGHT:
INDUCTANCE: 720 millihenries
DC RESISTANCE: 630 ohms
OPTIMUM LOAD: 47,000 ohms resistance in parallel with 400 to 500 pico-
farads total capacitance
ohms
w~lh almost no audlble change in frequency response. Total capaci-
tance includes both tone arm
FOUR-CHANNEL: This Stereo
four-channel matrix systems.
MONOPHONIC OPERATION: Set function switch on amplifier to "MONO"
"A+B."
or
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
left ground (usually blue) to "LC." If metal head is causing ground loop
hum, remove the ground tab. The metallic cartridge shield is disconnected
from the right channel ground by the removal of the ground tab.
CAUTION: Do not make solder
connection to cartridge
STYLUS REPLACEMENT (see
ure
2):
stylus and gently pull forward
of cartr~dge lnsert replacement
stvlu$ Into socket and Dress unt~l
-,--
housing mates with cartridge case.
MOUNTING 112.7 mm (1/2 in.)
mounting centers]:
Mounting screws are provided.
1.
Remove stylus guard and stylus
(see Stylus Replacement).
2.
Connect leads to cartridge (see
Figure
3. Lay cartridge in shell and allgn
mounting holes on side of cartridge with holes or threads in
shell. Follow turntable manufacturer's instructions to mount
cartridge in tone arm or plug-in
shell.
4.
Reinsert stylus (see Stylus Re- FIGURE
placement).
RECOMMENDED STYLUS CLEANING: Use
or smaller), trimmed to approximately 6 mm
an alcohol-distilled water solution. Commercial 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 antiskating
force.
2. Do not handle the tone arm while it is in operation since this may
cause the arm to sweep across the record.
3. 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 manufacturer recommends.
5.
Take care to properly insert the stylus into the cartr~dge assembly and
the cartridge and shell
6. Use 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.
SPECIAL NOTE:
cartridge, be certain that any replacement stylus you buy bears the following certification on the package: "This Stereo
manufactured by Shure Brothers
WILL SERIOUSLY DEGRADE THE PERFORMANCE OF YOUR CARTRIDGE.
ALL GENUINE
BROTHERS INC. LOOK FOR THE NAME SHURE ON THE STYLUS GRIP.
For more information on your Shure
the Small World of a Stylus."
FULL ONE-YEAR WARRANTY: Shure Brothers lncorporated
222 Hartrey Avenue, Evanston, Illinois 60204, warrants to the owner of this
product that it will be free, in normal use, of any defects in
and materials for a period of one year from date of purchase. You should
retain proof of date of purchase. Shure is not liable for any consequential
damages. It this Shure product has any defects as described above, care-
fully repack the unit and return it prepaid to:
If you are not in the United States, return the unit to your dealer or
Authorized Service Center for repair. The unit will be repaired or replaced
and returned to you promptly, and if it cannot be repaired or replaced,
you may elect to receive a refund. This warranty does not include stylus wear.
PATENT NOTICE: Cartridge and stylus manufactured under one or more
of the following U.S. patents: 3,055,988, 3,077,521, 3,077,522, and 3,463,889.
Copyright
27A1256 (TF) Prlnted in U.S.A.
5.8
If
amplifier is not equipped with this switch, connect left and
Grasp molded houslng of
~
1).
"DYNETICB" STYLI ARE MANUFACTURED BY SHURE
1980,
Shure Brothers Inc.
Set amplifier to "MONO" or
maxlmum ~ndicated should not be used.
grams
per channel. Load resistance can be up to 70,000
wirlng and amplifier input circuit.
Dynetic@ cartridge is compatible with all
term~nals. L-~TF$~Y~~L
To maintain the original performance standards of your
Shure Brothers lncorporated
Attention: Service Department
1501 West Shure Drive
Arlington Heights, Illinois 60004
LEFT
Fig-
out
kzzNEt
1
7FMtbL
a
camel's hair brush (No. 2 size
(1/4 in.), dipped in alcohol or
assembly into the tone arm receptacle.
Inc." AVOID INFERIOR IMITATIONS. THEY
Dynetic@ stylus is precision
stylus, write tor booklet:
FIGURE
"A+B."
1
2
"A
workmanship
"L,"
RIGHT
TO
CASE
Visit to
YShure"),
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