Shure M71-C User Guide
222
HARTREY
AVE.,
EVANSTON,
li.
60204
U.S.A.
AREACODE312/328.9000 . CA8LE:SHUREMICRO
MODEL
EASY-MOUNT
M71C
DATA SHEET
STEREO DYNETIC@
PHONOGRAPH CARTRIDGE
SPECIFICATIONS
M71 AND M73 CARTRIDGE SERIES
N71 AND N73
Model Diamond Stylus
Number Replacement
Side Contact Radius:
.0004" (.010 mm)
Frontal Radius
.0007" (.018 mm)
M71-6 NB71-6 Radius:
/
,0006"
I
M71C
*The N75-3 stylus may be used to reproduce the standard
rpm records. In this case, the amplifler should be set to "Monaural" or
TRACKABI LITY:
NC71 Radius
,0006'' (.OX mm)
"A+B."
~
(.OX mm)
:
M71EB at a stylus force of 1% grams
400 Hz.
M71-6 at a stylus force of 1% grams
M71C at a stylus force of 3 grams
M73G at a stylus force of 1 gram
-
-
400 Hz.
400 Hz.
-
400
Hz. - 14.3 cm/sec.
Higher stylus forces within specified range improve trackability.
FREQUENCY
CHANNEL SEPARATION:
RECOMMENDED LOAD IMPEDANCE:
INDUCTANCE:
D.C. RESISTANCE:
MOUNTING:
WEIGHT:
TERM I NALS:
GENERAL:
tridges has been developed for use with all high fidelity amplifiers
having magnetic and constant
MOUNTING:
centers. Hardware is provided for mounting purposes. (The brass
screws have British threads.)
1.
Remove stylus guard and stylus from cartridge. (See paragraph on stylus replacement.)
-.
2. Remove cartridge from "Easy-Mount" snap-in bracket. (See
(Figure 1)
3. Start mounting screws into tone arm head or plug-in shell.
4. Slip "Easy-Mount" bracket under heads of mounting screws
and tighten screws securely.
5. Connect leads to
connection to
dicated in tone-arm
~~
6. Insert cartridge into "Easy-Mount" snap-in bracket. (See
Figure
RESPONSE:
720 millihenries
630 ohms.
Standard
"Easy-Mount" snap-in bracket.
5
grams
'/z"
4 terminals
The M71 and M73 Series of Dynetic phonograph car-
The cartridge bracket has standard
phono-$artridge. Note color code for proper
termlnal
-...-~
~
1)
SHIELD OF CARTRIDGE
~B~~l;~~~~~;F~::I;:E+p~~~~~
instruct~on manual.
\
STYLI SERIES
5
cm/sec.)
~~-
:
/
6.2 ~nillivolts 1 Beige
I
9.0
milli.io1ts
I
14.3 cm/sec.
14.3 cm/sec.
14.3 cm/sec.
From
20
to 20,000 Hz.
More than 20 db at 1,000 Hz.
47,000 ohms per channel
(12.7 mm) mounting center using new
velocity
inputs.
L,:'
"R," "LG" and "RG" as in-
MUST
BE PLACED
OARTRIDQE
BUMP
OF
BRACKET.
IN
7
HOLE
Blue
1
I
1/2"
l?b
3
mounting
to
to
.5
3
-
78
\--LIFT HERE WITH THuwNAlL
CARTRIDGE AND BRACKET
FOR REMOVAL OF BRACKET.
FIGURE
I
ASSEMBLY
7. The top of the "Easy-Mount" bracket should be ,flu=\ aga!nSi
the top of the tone arm head for proper playing
unless other mounting
changer/tone arm manufacturer
8.
Reinsert stylus.
SHURE-SME MOUNTING INSTRUCTIONS: TO mount the cartridge in the Shure-SME Precision Pickup Arm, Model
3012,
refer to the paragraphs on Cartridge Installation and Balanc-
In the Instruction Manual supplied with the pickup arms.
ing
OPERATION: Recommended needle forces for optimum results
are listed under "Speciflcations." Forces greater than the indi-
cated "maximum" should not be used.
instructions
are suppl~ed
by
the record
3009
position,
and
CONNECTIONS
4-LEAD STSREO CONNECTION: Connect "hot" lead of right
channel to terminal "R" and shield or ground lead of
nel to terminal
ininal
L"
To prevent "ground loops" and hum, no common connectlon should
be used at cartridge terminals.
MONAURAL CONNECTION: For
Monaural or Stereo recordings, connect "hot" lead to both
and
"L"
ground terminals marked
"RG."
and shield or ground lead of left channel ,to
Connect "hot" lead of left channel to ter-
slngle channel reproduction of
terminals and connect ground or shleld lead to both
"RG"
and
"LG."
rlght chan-
"LG."
"R"
Suggestions for Cleaning Your Stylus
To clean the stylus, use a camel's-hair brush (No. 2 size or
smaller) dipped lightly in alcohol. The alcohol will remove any
sludge depvsits which
bristles should be trimmed to a length no longer
Always brush the stylus with a rorward movement from the rear
(terminal end of the cartridge)
the stylus from front to back or
CAUTION: Do not make solder
connections to cartridge termi-
nals. Make all solder connections
to terminal jacks provided before
slipping them over the
may have coated the stylus tip. The brush
tv the front. Never brush or wipe
s~de to side.
than % inch.
terminals.
TERMINAL DIAGRAM
FIGURE
2
STYLUS
FIGURE
REPLACEMENT
3
EASY STYLUS REPLACEMENT
of the stylus mates with the cartridge case. Care must be taken
not to allow the finger to slip off the molded housing of the
stylus, resulting in damage to the stylus tip or shank.
SPECIAL NOTE:
tl.~clgcs
13
LI~~I~I~I~III:~~~~~ ~I:ill(li~~~d~
placement stylus
package: "This Stereo
by Shure Brothers, Inc."
AVOID INFERIOR
DEGRADE THE PERFORMANCE OF YOUR CARTRIDGE
GENUINE "DYNETIC" STYLI
SHURE BROTHERS INC.
LABORATORY TEST FINDINGS: (Note: The following
test findines of the Shure N3D stvlus are an exam~le of the close
9
~rnrils
6:6db pcak 'io a drop
(27db) to,"poorM (16.5db), at 1 kc: These figures reveal ,that there
is very
inlitation Dynetic Styli.
good
Shnre periorni:lnce standards for the Shure N3D Stereo Dynetic
Stylr~s. In addition to our test findings, our Service Department
~,ecords show that an Increasing number of Dynetic Phono Cartridges are being returned because of poor performance-and our
esarninntion has disclosed tnat most of these returned cartridges
arc
CONCLUSION: Obviously. if any imitation
we
cartridges will meet the publijhed Shure speciflcations. Accept no
substitute.
GUARANTEE: This
to be free
onc year, froni ttic clatl'
purch:rse dntt,. Tills gri;rt.antee in(:ludes all parts and labor.
This
SHIPPING INSTRUCTIONS:
t.eturn it pt.i,~miti
return the un~t
for
PATENT NOTICE:
one or
3,077,522,
Copvright
27A565
l~ttle consistency in pertormance character~stlcs of the
In each of the categories shown above the results ranged from
to
poor. As a matter of tact, only
using imitation Dynetic Styli.
cannot gltar~ntee that the performance of Shure Dynetic
guarantc('
r'5patr.
more of the following U. S. Patents 3,055,988, 3,077,521,
and
(KK)
Tltt* Ijynt.tic sty111.3 :i~:il~~~lt)ly
tllc lllust cr~rrcsl C!,III~)UIIC.I~~. TI) ~~~:iilil:~in the (8riglnal
of
you. buy bears the foilowing certification on the
YULII. v:irt~~tdx~,
Dynetic stylus is precision manufactured
IhTITATIONS. THEY WILL SERIOUSLY
ARE
to
trark a record with a low comwiiance stvlus.'and
of
7.5dlr. Separation varied from "good"
10%
fr.oni electi.i(~;~l and rliechariical defects for a pt3riod of
Tiit, unit will
S~LIIY' p~,oduct is guaranteed in normal use
of
pu~.chase. Plcasc retain proof of
dor.s
nut int,lu(l<. stylirs wear.
to
ti-i(. f:rt,to~y.
to
your dealer or, autlio~~ized Shur.c Ser.vice Center
Carefnlly repark the unit and
If
oulsidt, the 1Jnitt.d Statt's,
bc
~,eturntd to you prepaid.
C:~rt~,idge and stylus manufactured under
3,463,889.
1969
Sliul'e GI otliers Inc. Printed in
USV~
ill
tllr.ie Cii1.-
ltc
ct~lla111 tl~at ally re-
MANUFACTURED BY
ALL
stylus
of the samples met the
Dynetic Stylus is used.
U.S.A.
2
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