Shure M75E-P20 User Guide

222 HARTRLY AVO €VANSTOH,

ILL.

(60204)

V.S.8.

MICROPHONES AND ELECTRONIC COMPONEWfS

AREA

CODE

312/328*9000

CABLE

SHUREYICRO

MODEL M75E-PZO

TYPE

2

DATA SHEET

GARD-A-MATIC@

STEREO DYNETIC

PHONOGRAPH CARTRIDGE

HEAD ASSEMBLY

SPECIFICATIONS

MODEL

FREQUENCY
RESPONSE:

OUTPUT VOLTAGE:

CHANNEL
SEPARATION

CHANNEL
BALANCE:

RECOMMENDED

LOAD IMPEDANCE:

INDUCTANCE:
D.C. RESISTANCE:
STYLUS MODEL

N75E TYPE 2 (E T2)

TRACKING FORCE:
TRACKABI LITY:

:

M75E-P2O TYPE

2

From 20 to 20,000 Hz.

5.0 millivolts per channel at
cm/sec.

Nominally over 25 db at 1,000

1,000

Hz.

Hz.

Within 2 db of each other
47,000 ohm (per channel)

720 millihenries
630 ohma

Replacement: Grip Color-Yellow
ELLIPTTCAL SHAPED

.0007 inch (17.8 microns) frontal radius
.0010 inch (25.4 microns) between points

of contact with groove.

.0002 inch

(5

microns) side contact radii

DIAMOND

TIP

1% grams maximum

at

M75E-P20 Type 2 at a stylus force of 1 gram

-

Hz.
Hz.

20 cm/sec

-

28 cm/sec

-

18 cm/sec

1% grams is exerted on the

t%e stylus grip to come in con-

M75E-P20

an$, in general, in iny area in

400 Hz.

1,000

10,000

Model M75E-P20 Type 2 is a high uality elliptical stylua Stereo
phono cartridge mounted in a retractile safety suspension system
to provide a scratch-proof, bounce-proof, feature to the operation

of

an automatic turntable.

The elliptical stylus cartridge is spring mounted in the pickup

head. A maximum needle force of
face of the record. Forces in excess of approximately 2 grams
will cause either the plastic safet bumper at the rear of the
cartridge or the plastic bumper in
tact with the record surface and thereby protect the record from
needle scratches and protect the needle itself from damage.

Perhaps the most desirable advantage of all is that the

Type 2 makes it possible to operate the turntable in situations
where a changer normally will not work well. These include such
adverse conditions as aboard a shi during a storm' in rooms
where modern dancing is done:
which shaky floors or unstable phonograph supports will normally

cause mistracking of the cartridge.

INSTALLATION

For Automatic and Manual Play.

1.

Remove present pickup head and insert Shure Model into

phono arm. Care must be taken in removal and inserting of
the pickup heads not to cause damage to the stylus, or to

disturb the position of the leads.

2.

Set stylus force indicator to

3.

Balance arm as per instructions and set styIus force indicator
in the range of

In this case, the clearance from the record surface to the plastic

safety bumper at the rear of the cartridge will be between

$is''

to.

Ys";

maintamed even if it is necessary to adjust the

be
setting on the arm indicator slightly. This may be necessary
due to the tolerance

accuracies in the arm-balancing process.

4.

The vertical tracking angle adjustment on the picku head has
been preset at the factory providing optimum per&rmance-

no

further adjustment is necessary.

NOTE:

If

ance of the safety bumper should be measured
records on the turntable.

1%

to 1% grams.

This range in recommended playing position should

it is desired to play a stack of flve records the clear-

"0."

1%

gram

bulldup in certain arms plus slight in-

with

THREE

6

Suggestions for Cleaning Your Stylus

To clean the sfylus, use a camel's-hair brush {No. 2 size or

smaller) dipped lightly in alcohol. The alcohol will remove any

dnoosits which mav have coated the stylus tip. The brush

sli~d~n
b~st"les-should be trimmed to a length no longer than
Always brush the stylus with a forward movement from the rear

(terminal end of the cartridge) to the

the stylus from front to back or side to side.

f~nt. Never brush or wipe

1/4

inch.

EASY STYLUS REPLACEMENT

oGt of crirti-idse.-Grasa re-

.

...

--

-~

placement stylus between

thumb and

insert into stylus socket.
Press stylus into socket
until the molded housing
of the stvlus mates with
the
must-be-takEn not to allow
the
molded housing of the
stylus. resulting in
ae to the styTus tip or
s%ank.

forefinger and

cartridge case. Care

Anger to slip off the

dam-

STYLUS REPLACEMENT

CAUTION: The position of the leads inside the pickup head shell
is extremely important in maintaining proper tracking force and
DroDer oaeration of the cartridge-head assembly. The leads have
been positioned at the factor for optimum

leads should not be

SAFETY
BUMPER

disturbei.

pefformance and the

RECOMMENDED PLAYING POSITION

SPEC1A.L NOTE: The Dynetic stylus assembly used in these car­tr~d es is the most critical component. To maintain the original
pergrmance standards of our cartridge, be certaln that any re­placement stylus you buy gears the following
package: "This Stereo

by Shure Brothers, Inc.

Avoid inferior imitations. They will
formance of your cartridge. All genuine
manufactured by Shure Brothers, Inc.

LABORATORY TEST
test findings of the Shure N3D stylus are an example of the close
scrutiny Shure pays to all imitation 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 a low of 0.9 to a high of 11.5, requirin

9.0 grams to track a record with a low compliance stylus, and
grams with a high compliance stylus. The high compl?ance stylus
retracted at
drag on the record surface, ther'eby becoming inoperative. Re-

sponse at high frequency (relative to the lkc level) ranged from a

5.5db peak to a drop of 7.6db. Separation varied from "good"

(27db) to,"poor" (16.5db), at 1 kc. These flgures reveal that there
is very little
imitation

In each of the categories shown above the results ranged from
good to poor. As a matter of fact, only 10% of the samples met the
Shure
Stylus.-In addition to our test flndings our Service Department
records show that an increasing
tridges are being returned because of poor performance-and our
examination has disclosed that most of these returned cartridges
are using imitation

CONCLUSION:

we cannot guarantee that the performance of Shure

cartridges will meet the published Shure
substitute.

4

grams needle force allowing the cartridge case to

cons~stency in performance characteristics of the

Dynetic Styli.

aerformance standards for the Shure N3D Stereo Dynetic

Dynetic stylus is precision manufactured

FIN

Dl NOS: (Note: The following stylus

numb& of Dynetic Phono Car-

Dynetic Styli.

~bviiusly, if any imitation Dynetic Stylus is used,

certiflcation on the

serioue

de rade the per-

I!&neficic" styli are

Dynetic Styli.) Shure

specifications.

Dynetic

Accept no

Guarantee

The Stereo Dynetic Cartridges and Stereo Dynetic Styli are
guaranteed to be free from electrical and mechanical defects for
one year from the date of shipment from the factory, provided

all instructions are complied with fully. The Guarantee does not
cover stylus wear, nor does it cover damage to the stylus assem­bly from abuse or mishandling.

PATENT NOTICE: Manufactured under
3,077,521, and 3,077,522. Other patents pending.

U:

S. Patents 3,055,988,

5

Copyright 1969, Shure Brothers, Inc.
27A644 (8-69)

Printed in

U.S.A.