Shure M75E User Guide
222
HARTREY
AVE., EVANSTON.
IL.60204
U.S.A.
MODEL
M75E
j?7I-TRACK
AREACODE312/328.9000 . CABLE
DATA
STEREO DYNETICO
PHONOGRAPH CARTRIDGE
SHURE,MlCRO
SHEET
SPECIFICATIONS
M75
CARTRIDGE AND
Model Diamond Stylus
Number Replacement
M75-6 N75-6 Radius:
+
M75 Series N75-3.* Radius:
V-15 Type
*
The N75-3 stylus may be used to reproduce the standard 78
rpm records. In this case, the amplifier should be set to “Mon-
aural” or “AfB.
Trackability at a stylus force
N75-3 and
Arm).
Higher stylus forces within specified range greatly improve
trackability.
FREQUENCY RESPONSE:
CHANNEL SEPARATION:
RECOMMENDED LOAD IMPEDANCE:
INDUCTANCE:
D.C. RESISTANCE:
MOUNTING:
WEIGHT:
TERMINALS:
GENERAL:,
graph cartridges has been developed for
amplifiers having magnetic and constant velocity inputs.
SHURE-SME MOUNTING INSTRUCTIONS:
in the Shure-SME Precision Pickup Arm, Model 3009 and 3012,
refer to the paragraphs on Cartridge Installation and Balancing
in the instruction Manual supplied with the pickup arms.
OPERATION
are listed under “Specifications.” Forces greater than the indi-
cated “maximum” should not be used.
,0006’‘
(.015 mm)
Side Contact
Radius:
,0002‘‘ (.005 mm)
Frontal Radius
,0007’‘ (.018 mm)
,0006’‘ (.015 mm)
111
,0025’’
(.064
mm)
of
1
gram
for Models N75E and N75G (in Shure-SME
400
1,000
10,000
720 millihenries
630
Standard
6 grams
4
The M75 Series of High Trackability Dynetic phono-
:
Recommended needle forces for optimum results
ohms
I/,”
terminals
N75
STYLUS SERIES
Output Voltage
(1,000
Hz.
5
cm/sec)
6.2 millivolts
6.2 millivolts
:
6.2 millivolts
6.2 millivolts I Green
of
2 grams for Models N75-6 and
Hz. (cps)-18 cm/sec
Hz. (cps)-25 cm/sec
Hz. (cps)-l4 cm/sec
From 20 to 20,000 Hz. (cps)
More than 25 db at
(12.7 mm) mounting center
Stylus
at
Grip Tracking
Color
Beige
Yellow
Dark
Gray
1,000
47,000 ohms per channel
use
with all high fidelity
To mount the M75
I
Hz.
(Grams)
1%
to 3
.1/4
to
.1/4
to
1%
to
(cps)
1%
1%
3
CONNECTIONS
4-LEAD STEREO CONNECTION:
channel to terminal
nel to terminal RG.” Connect “hot” lead of left channel to ter-
minal
“L”
To prevent “ground loops” and hum, no common connection
should be used at cartridge terminals.
MONAURAL CONNECTION:
Monaural
and
ground terminals marked “RG” a<d “LG.”
and shield or ground lead
or
“L”
terminals and connect wound or shield lead to both
R” and shield or ground lead of right chan-
Stereo recordings, connect “hot” Lead to both
Connect “hot” lead of right
of
left channel to
For single channel reproduction of
“LG.”
“R”
Suggestions
To clean the stylus, use a camel's-hair brush (No. 2 size or
smaller) dipped lightly in alcohol. The alcohol will remove any
sludee deDOSitS which mav have coated the stvlus tiu. The brush
brides should be trimmed to
Always
M,ake all solder connections to terminal jacks provided before slipping them over the terminals.
1
brush the stylus with a forward movement from the rear
(terminal end of the cartridge) to the front
the stylus from front to back or side to side.
CAUTION:
EFT
Do not make solder connection to cartridge termina!s.
for
Cleaning
a
Your
length no ldnger than
Never
Stylus
brush or wipe
?4
ihch.
-1
TERMINAL DIAGRAM STYLUS REPLACEMENT
FIGURE
I
FIGURE
2
EASY STYLUS REPLACEMENT
Grasn molded housine of stvlus between thumb ana forefinper.
GentlyAwithdraw stylus-by pulling forward out of cartridge. Grasp
replacement stylus between thumb and forefinger and insert into
stvlus socket Press stylus into socket until the molded housing
of- the stylus mates with the cartridge case. Care must be taken
not to allow the finger to slip
stylus, resulting in damage to the stylus tip or shank.
SPEC1A.L NOTE:
tridges
is
performance standards of your cartridge. be certain that any replacement stylus you buy bears the foi1,owing .certification on the
package
:
by Shure Brothers, Inc.
AVOID INFERIOR IMITATIONS. THEY WILL SERIOUSLY
DEGRADE THE PERFORMANCE
GENUINE "DYNETIC" STYLI ARE MANUFACTURED BY
SHURE BROTHERS INC.
LABORATORY TEST FINDINGS:
test findings of the Shure N3D stylus are an example of the close
scrutiny Shure pays to all imitation Shure Dynetic Styli.) Shure
laboratory tests show that the imitation stylus assemblies labeled
as replacements for the Shure Model N3D Stylus Assembly vary
drastically in important performance characteristics. For example,
the compliance varied from
9.0 grams to track a record with a low compliance stylus, and
grams with a high compliance stylus. Th.e high compljance stylus
retracted at 4 grams needle force, allowing the cartridge case to
drag on the record surface, thereby becoming inoperative. Response at high frequency (relative to the lkc level) ranged,from
5.5db peak to a drop of 7.5db. Separation varied from good"
(27db) to, "poor" (16.5db) at lkc. These figures reveal that there
is very little consistency in performance characteristics of the
imitation Dynetic Styli.
good to poor. As a matter of fact, only
the Shure performance standards for the Shure N3D Stereo
Dynetic Stylus. In addition to our, test findings, our Service De-
partment records show that an increasing number of Dynetic
Phono Cartridges are being returned because of poor performance
-and our examination has, disclosed, that most
cartridges are using imitation Uynetic Styli.
CONCLUSION:
we cannot guarantee that the performance of Shure Dynetic
cartridges will meet the published Shure specifications. Accept
substitute.
GUARANTEE:
to be free from electrical and mechanical defects for
one year from the date of purchase. Please retain proof of
purchase date. This guarantee includes all parts and labor.
This guarantee does not include stylus wear.
SHIPPING INSTRUCTIONS:
return it prepaid to the facto1,y. If outside the United Slates,
return the unit to your dealer or authorized Shure Service Center
lor repair. The unit will be returned to you prepaid.
PATENT NOTICE:
one
3,077,522, and 3,463,889.
Copyright 1966, Shure Brothers Inc. Printed in
27A334
"This Stereo Dynetic stylus
In each of the categories shown above, the results ranged from
or more of the following U.
(KK)
The ,Dynetic stylus assembly.used in these
the most critical component. To maintain the original
Obviously, if
This Shure product is guaranteed in normal use
Cartridge and stylus manufactured under
oft
the molded housing of the
is
precision manufactured
OF
YOUR CARTRIDGE.
(Note: The following stylus
a
low of
0.9
to a high of 11.5. requiring
10%
of the samples met
of
these returned
any
imitation Dynetic Stylus is used,
Carefully ,repack the unit and
S.
Patents 3,055,988, 3,077,521,
a
period of
U.S.A.
car-
ALL
no
2
a
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