Shure M991ED is a custom stereo Dynetic® phono cartridge with a N91ED stylus and tracking force of 1 to 1.5 grams. It features:
- Biradial (elliptical) stylus for improved tracking and reduced distortion
- High output voltage of 6.2 mV for strong signal strength
- Wide frequency response of 20 to 20,000 Hz for accurate sound reproduction
- Compatible with all four-channel matrix systems for versatile use
- Easy stylus replacement for convenient maintenance
The M991ED is ideal for audiophiles and music enthusiasts who demand exceptional sound quality from their vinyl records.
Shure M991ED is a custom stereo Dynetic® phono cartridge with a N91ED stylus and tracking force of 1 to 1.5 grams. It features:
- Biradial (elliptical) stylus for improved tracking and reduced distortion
- High output voltage of 6.2 mV for strong signal strength
- Wide frequency response of 20 to 20,000 Hz for accurate sound reproduction
- Compatible with all four-channel matrix systems for versatile use
- Easy stylus replacement for convenient maintenance
The M991ED is ideal for audiophiles and music enthusiasts who demand exceptional sound quality from their vinyl records.
222
HARTREY
AVE..
EVANSTON.
IL. 60204 U.S.A.
@
MICROPHONES AND ELECTRONIC COMPONENTS
AREA
CODE
3121866-2200
.
CABLE:
SHUREMICRO
TWX:
910-231-0048 TELEX: 72.4381
THE PREMIER FAMILY OF STEREO SOUND REPRODUCERS
CUSTOM
STEREO DYNETIC@
MODEL RMg1 OED
PHONOGRAPH CARTRIDGE
CARTRIDGE AND STYLI SPECIFICATIONS
N91ED
5
X
l8p
(.0002
X
.0007
in.)
Biradial
(Elliatical)
Yellow
L-
25
dB
at
1
kHz
N91-3t Dark 6.2 mV 20 to
- -
a
microns
1
Green
1
/20goo
/
1
(.0025 in.)
Spher~cal
400
Hz
-
22 cm/sec
y/1"
1,000 HZ
-
33
cm/sec
grams
10,000 Hz
-
19 cm/sec
at
1
gram
3
1
grams
toptional
78
rpm Stylus: Set amplif~er to "MONO" or
"AtB."
*Output voltages given for stereo cut record. For
MONO
cut record,
output voltage at both left channel and
r~ght channel cartridge terminals
w~ll be
71%
of ilgures above.
**Tracking forces greater than
lnaximum indicated should not be used.
NET WEIGHT: 5.8 grams
INDUCTANCE: 720 millihenries
DC RESISTANCE: 630 ohms
OPTIMUM LOAD:
47,000 ohms
resistance
in parallel with 400 to 500 pico-
farads
iota1 capaclidnce per channel. Load resistance can be up to 70,000
ohms
wtth
almost no audlble change in frequency response. Total capaci-
tance includes both the tone arm
wir~ng and amplifier input circuit.
FOUR-CHANNEL: This Stereo
Dynetic@ cartridge is compatible with all
four-channel
matrlx systems.
MONOPHONIC OPERATION:
Set function switch on amplifier to
"MONO"
or
"A+B."
If
amplifier
is not equipped with this switch, connect left and
rlght channels in parallel.
CONNECTIONS (see Figure
1): Rlght "hot" lead (usually red) to "R," right
ground
(usually green; to "RG
"
Left "hot" lead (usually white) to
"L,"
left ground (usually bluc) to "LC." if metal head is causing ground loop
hum, remove the ground tab. The
metalllc cartridge shield is disconnected
from the right channel ground 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
stylus and gently pull forward
out of cartridge. Insert replace-
ment stylus into socket and press
untll housing mates with cartridge
case.
MOUNTING
[12.7
rnrn
(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
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
catridge in tone arm or plug-in
shell.
4. Reinsert stvlus (see Stvlus
Re-
LEFT
/GROUND
TAB
LEFT
CHANNEL
TERMINAL TO
CASE
FIGURE
1
placement).' FIGURE
2
Copyright
1979,
Shure Brothers Inc
27A1445
(SC)
(OVER)
Pr~nted In U.S.A.
RECOMMENDED STYLUS CLEANING: Use a camcl's ha~r brush (No. 2 slre
or srnallrr), tr~inmcd io approximalely
6
mrn
(1/4
In.), d~ppcd In alcoh(11 or
an alc~~hol-clist~lled water s(11ut1on. Coinmerc~al clcan~ng solut~ons may cat~ic
stylus damage (jr corrosion. Always brush stylus from hark to iront; nevcr
brush
or wlpe 5iyluc irorn front to back ur s~de to side.
TO PRESERVE STYLUS LIFE:
1.
lollow turntahlr or tone arrn ~n\trurtlons when adjucting ant~skating
force
2.
Uo
not handle thc tone arrn while it
15
In
operation
Since
thii may
cause the arm
to s\vecp across the record.
3.
I1
ii
1s necr2',sary
t(1
manualiy piace the tone. arm in the rrcord groove
wh~lc turntable 1s rotating, release it as soon as the stylus engages the
rerord groove.
4.
Correct improper xi-down adj~istmcnt or maliunction of the turntable
chang~ng rni,chan,sm to prevent the stylus trom strik~ng the edg~
ot
the
turnlahie or record. Do not slack more records than turntablc manuiac-
turer rcc~~rnrnrnds.
5
Take care to properly insert the stylus Into the cartr~dge assernhly and
ihe cartr~dge and shr:ll d\?cmbly Int(1 thc tone arm receptacle.
6. Uctx prc~pcr vert~cal tracking torce scxttlng tor cacli carir~dge.
7. Dcl nut ilse badly warped, cracked or irnpt,ricci records.
8.
When du,tin:, ttic turntable protect the stylus with thc stylus guard.
SPECIAL NOTE:
Tu mainta~n the original pt.rtormanre standards oi your
cartr~dge, br certain that any rc,pldcernent 5tylug you buy t)c'arc the iollow-
Ing ccrtlticatlon on the package: "This Stpreo Dynctic(i9 5iyIus is precl5lon
nianufatiured by Sliure Rrothcrs Inc." AVOID INFERIOR IMITATIONS. THEY
WILL SERIOUSLY IJLGRAUE THE PERFORMANCE
OF
YOUR CARTRIDGE.
ALL
GENUINE "DYh'ETICu@" STYLI ARE hlANUFACTUREV BY SHUKE
BROTtIERS INC. LOOK FOR THE NAME SIIUKE ON TI-IE STYLUS GRIP.
For more information on your Shure stylus, write for booklet:
"A
Visit to
the Small World of a Stylus."
FULL ONE-YEAR WARRANTY: Shure Brother? Incorp~~rated ("Shure"),
222
Hartrey Avenue, Evan\ton, Ill~no~s 60204, warrants to the ownrr oi th~s
product that it w~ll be frec, In normal use, CJI any defects In workmanchip
and
mater~als for a period
II~
one year Irclm date
~i
purchase. You should
retaln prooi oi date of purchaw. Shure
IS
not liable for any consecluential
damagt~s. If th~c Shure product has any defects as describrd above, care-
fully
repack the unit and return it prepaid to:
Shure
Brothrrs Inc~~rp~r~ited
Ailent~on: Service I)epartnient
1.501 West Shurc Drivc
Arlington tieightc, Illin(~~s 60001
If you arc not In the United Statc?s, rtJturn thr i~nit to your dealrr or
Autlior~zed Serv~ce Center ior repalr. The tint! w~ll b? repaired or replaced
and returned to you promptly, and
11
11
cannot bc repaired or replaced,
you may
rlcct
111
rccclve a reii~nd This warranty
does
not include styllir wear
PATENT NOTICE: Cartr~~igc and ilylu5 manulacturcd tinder one or more
of the following U.S. patents. 1,055,988, 1,077,521, 3,077,522, and 3,463,889
-
1
-
2
Shure M991ED is a custom stereo Dynetic® phono cartridge with a N91ED stylus and tracking force of 1 to 1.5 grams. It features:
- Biradial (elliptical) stylus for improved tracking and reduced distortion
- High output voltage of 6.2 mV for strong signal strength
- Wide frequency response of 20 to 20,000 Hz for accurate sound reproduction
- Compatible with all four-channel matrix systems for versatile use
- Easy stylus replacement for convenient maintenance
The M991ED is ideal for audiophiles and music enthusiasts who demand exceptional sound quality from their vinyl records.
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