Shure M75G User Guide

222

AREA

HARTREY

CODE

312f328-9000

AVE

EVANSTON.

*

ILL.

(60204)

CABLE

U

5.1.

SHUlREMlCRO

DATA

SHEET

STEREO DYNETIC%

PHONOGRAPH CARTRIDGE

SPECIFICATIONS

M75 CARTRIDGE AND N75

Model Diamond

Number

M75-6 N75-6 Radius: 6.2 millivolts Beige

M75E

M75G N75G Radius: 6.2 millivolts Dark

M75 Series N75-3.* Radius: 6.2 millivolts Green 1% to

V-15 Type

*The N75-3 stylus may be used to reproduce the standard
rpm records. In this case, the amplifier should be set to
aural" or "A+B.

Trackability at a stylus force of
N75-3 and
Arm).

Higher stylus forces within specified range greatly improvt'
trackability.

FREQUENCY RESPONSE:
CHANNEL SEPARATION:
RECOMMENDED LOAD IMPEDANCE:

INDUCTANCE:
D.C. RESISTANCE:
MOUNTING:

WEIGHT:
TERMINALS:

GENERAL:

graph cartridges has been developed for use with all high fidelity
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 tht, instruction Manual supplied with the pickup arms.

OPERATION

arc listed under "Specifications. Forces greater than the indi-

cated "maximum" should not be used.

,0006''

N75E Elliptical 6.2 millivolts Yellow
Side Contact
Radius:
,0002'' (.005
Frontal Radius
,0007'' (.ON mm)

,0006''

,0025'' (.064

I1

of

1

Standard

6

grams

The M75 Series of High Trackability Dynetic phono-

:

Stylus

Replacement

(.015

mm)

mm)

:

(.015

mm)
mm)

gram

for

Models N75E and N75G (in Shuw-SME

400

Hz.

1,000

10,000

720 millihenries

630 ohins

4

temiinals

Reconlniended nezdle forces for optimum results

(cps)-l8 cm/sec

Hz.

(cps)-25 cm/sec

Hz.

(cps)-l4 cin/sec

From 20 to 20,000

More than 25 db at

'/2"

(12.7 mm) mounting center

CON N ECTl ON

4-LEAD STEREO CONNECTION:

channel to terminal
nel to terminal "RG." Connect "hot" lead of left channel to ter;

"L"

niinal

To prevent "ground loops" and

should be used at cartridge terminals.

MONAURAL CONNECTION:

Monaural or Stereo recordings. connect "hot" !cad to both
and "L" terminals and connect ground or shield lead to both
ground terminals marked "RG" and "LG."

and shield

"R" and shield or ground lead of right chan-

or

ground lead

For single channel reproduction

STYLUS

Output Voltage

(1,000

Hz.

5

cm/rec)

~~~

2

grams

S

Connect "hot" lrad of right

of

hum,

SERIES

Stylus

at

Grip Tracking

Color

(Grams)

1%

K

z&

Gray

for

Models N75-6 and

Hz.

(cps)

1,000

Hz.

47,000

ohms

To mount the M75

left channel to "LG.'

no

coninion connection

(cps)

per channel

to

to

1%

to

11/2

"Mon-

"R"

3

3

78

-

of

~uggestions

To clean the stylus. use a camel's-hair brush (No 2 size or

smaller) dipped lightly
sludge deposits which mav have coated the stvlus
bristles should be trimmed to a length

Always

CAUTION:

M,ake all solder connections to terminal jacks provided before shp­ping them over the terminals.

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.

Do not make solder connection to cartridge terminals.

fo;

Cleaning

in

alcohol The alcohol will remove any

Your

~+y~us

no

tiD

Id;lg&~fhan--a .-in'ch:

Never

brush or wipe

The

hriish

TERMINAL DIAGRAM STYLUS REPLACEMENT

Grasp molded housing of stylus between thumb and forefinger.

Gently withdraw stylus by pulling forward out of cartridge. Grasp

replacement stylus between thumb and forefinger and insert into

stylus 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.

SPECIAL NOTE:

is

tridges
performance standards of your cartridge. be certain that any re­placement stylus you buy bears the foilowing certification
package
by Shure Brothers. Inc."

Avoid inferior imitations. They will seriously degrade the per­formance of your cartridge. All 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
laboratory tests show that the imitation stylus assemblies labeled
as
drastically in important performance characteristics. For example.
the compliance varied from a low of 0.9 to

9.0 grams to track
grams with a high compliance stylus. The high compliance stylus
retracted
drag on the record surface. thereby becoming inoperative. Re­sponse

5.5db peak to a drop of 7.5db. Separation varied from "good"
(27db) to "poor" (16.5db)

is

imitation Dynetic Styli.

In
good to poor. As a matter of fact, only
the Shure performance standards for the Shure N3D Stereo
Dynetic Stylus.

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 of these returned
cartridges are using imitation Oynetic Styli.

CONCLUSION:

we cannot guarantee that the performance of Shure Dynetic

cartridges will meet the published Shure specifications. Accept
substitute.

The Stereo Dynetic Cartridges and Stereo Dynetic Styli arc'
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 docs it cover damage to the stylus assem­bly from abuse or mishandling.

PATENT NOTICE:

3,077,521, and 3,077.522. Other patents pending.
Copyright 1966, Shure Brothers,

27A426 (1-68)

the most critical component. To maintain the original

:

"This Stereo Dynetic stylus

replacements for the Shure Model N3D Stylus Assembly vary

at

at

high frequency (relative to the lkc level) ranged from

very little consistency in pertormance characteristics

each of the categories shown above. the results ranged from

I

FIGURE

EASY

STYLUS

REPLACEMENT

oft

FIGURE

2

the molded housing of the

The Dynetic stylus assembly,used in these car-

is

precision manufactured

(Note: The following stylus

all

imitation Shure Dynetic Styli.) Shure

a

a

record with a low compliance stylus, and

4

grams needle force. allowing the cartridge case to

at

lkc. These figures reveal that there

In

addition to our test findings, our Service De-

Obviously,

if

any

imitation Dynetic Stylus

high of 11.5. requiring

10%

of the samples met

is

Guaran4ee

Manufactured under

inc.

U.

S.

Patents 3,055,988,

Printed in U.S.A.

on

of

used.

the

the

no

2

a