Shure M75-6 Type 2 User Guide

222

AREA

WARTR%I

AYE

EVANSTON.

COOE

312/328.9000 CABLE SHUREMICRO

ILL.

(60204)

U.S.1.

MODEL

TYPE

M75-6

2

DATA SHEET

STEREO DYNETICB

PHONOGRAPH CARTRIDGE

SPECIFICATIONS

M75 TYPE

Model

Number

M7.5E

TYPE 2

M76G N75G TYPE 2

TYPE 2

M75EJ N75E.J TYPE 2

TYPE 2

M75-6

TYPE 2

*

The N75-3 stylus may
rpm records. In
aural" or

TRACKABI LITY:

M75E

1175G

M75-6 TYPE 2 at a stylus force oi 2 grams
M75EJ TYPE 2 at a stylus force of Y grams

Higher stylus forces within specified range improve trackability.

FREQUENCY RESPONSE:
CHANNEL SEPARATION

RECOMMENDED LOAD IMPEDANCE:
INDUCTANCE:

D.C.

MOUNT1 NG
WEIGHT:
TERM I NALS : 4
GENERAL:

phonograph cartridges has been developed for use with all hlgh
fidelity amplifiers having magnetic and constant velocity inputs.

SHURE-SME MOUNTING INSTRUCTIONS:

:n 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.

OPE

are listed under "Specifications." Forces greater than the indi­cated

2

CARTRIDGE AND N75 TYPE 2 STYLUS SERIES

Output Voltage Stylus

/

(l.000

Hz.

1

Diamond

I

4.-

1

N75E TYPE 2.

(E

Side 'Contact Radius:

!

0002" (.005

i

Frontal Radius:

1

,0007"

I

1

(G

/

,0006" (.015 mm)

1

(EJ

Side Contact Radius:
.0004" (.010 nlm)
Frontal Rad~us
,0007'' (.018 mm)

,

N75-6 TYPE 2

(6 T2) Radius:

.0006N (.015 mm)

1

N75-3,* Radius:

I

,0025" (.064 mm)

"A+B.

TYPE 2 at a stylus force of 1 gram
TYPE 2 at a stylus force of 1 gram

RESISTANCE:

:

Standard

6 grams

The M75 TYPE 2 Series of High Trackabi!ity Dynetic

RAT I ON

:

"maximum"

Stylus

Re~lacement

T2) Elliptical

~m)

(.018

111111)

T2)

Radius:

T2) Elliptical

this

case, the amplifier should be set to "Mon-

400 Hz.

1,000

10,000 Hz. - 18 cm/sec

400 Hz.

1,000 Hz. - 35 cm/sec

10,000 Hz. - 20 cm/sec

720 millihenries

630 ohrns

Yz"

terminals

Recommended needle forces for optimum results

should not be used.

5.0 millivolts

5.0 millivolts I Dark

5.0 millivolts

:

1

6.2 millivolts Green

be

used to reproduce the standard 78

-

Hz.

-

-

From 20 to 20,000

:

More than 25 db at 1,000

(12.7 mm) mounting center

at / Grip

5

cm/sec) Color (Grams)

.

.

20 cm/sec
28 cni/sec

28 cm/sec

HZ

47,000 ohms per channel

To mount the M75

Yellow

I

/

Gray

I

Light
Green

1

Beige 5.0 millivolts

I

(cPS)

Hz

I

Tracking

S/4

to

S/s

to

1% to

1% to

I

1% to

(CPs)

1%

1%

3

3

3

4-LEAD STEREO CONNECTION:

channel to terminal
nel to terminal
minal

"L"

To prevent "ground loops" and hum, no common connection

should be used at cartridge terminals.

MONAURAL CONNECT I ON

Monaural or Stereo recordings, connect "hot"
and
ground terminals marked

and shield or ground lead of left channel to

"L"

terminals and connect ground or shield lead to both

"R"

"RG." Connect "hot" lead of left channel to ter-

and shield or ground lead of right chan-

"RG" and

Connect "hot" lead of right

:

For single channel reproduction of

!ead to both "R"

"LG."

"LG."

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

COkNECTlONS

sludge deposits which may have coated the stylus tip. The brush
bristles 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)
the stylus from front to back or side to side.

CAUTION

Make all solder connections to terminal jacks provided before
slipping them over the terminals.

:

Do not make solder connections to cartridge terminals.

to the front. Never brush or wipe

1/4

inch.

LEFT

RIGHT
CHANNEL
TERMINAL

GROUND TAB

RIGHT
CHANNEL
GROUND
TERMINAL
GROUNDED

TO

TERMINAL DIAGRAM STYLUS REPLACEMENT

FIGURE

I

EASY STYLUS REPLACEMENT

Grasp molded housing of stylus between thumb and forefinger.
Geutly 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
not to allow, the finger to slip off

result~ng in damage to the stylus tip or shank.

stylus,

SPECIAL NOTE:

tridges is the most critical component. To maintain the original
pcrforn~ance standards of your cartridge, be certain that any re­placement stylus you
backape: "This Stereo Dynetic stvlus is wr~cision manufactured

hv

Shke Brothers. Inc.

Avoid inferior imitations. They will seriously degrade the per-

fcrmance of your cartridge. Ail genuine "Dynetic" styli are
manufactured by Shure Brothers,

LABORATORY TEST FINDINGS:

find~ngs of the Shure N3D stylus are an example of t%e dose

test
scrutlny Shure pays to all imitat~on Shure Dynetic Styli.) Shure

laboratory tests show that the imitation stylus
as replacements for the Shure Model N3D

drastically in important performance
thr comvliance varied frorn a low of 0.9 to a hieh

9.0

grams to track a record with a low comp~ian~stylus,~and~"z
grams with a high compliance stylus. The high compliance stylus
retracted at
drag on the record surface, thereby becomina
sponse at high frequency (relative to the lkc

5.5db peak to a drop of 7.5db. Separation varied from "good"

(27db) to "poor" (16.5db) at lkc. These figures Seveal that there is

very little consistency in performance characteristics of the

tion Dynetic Styli.

In each of

good to poor. As a matter
Sliure performance standards for the Shure N3D Stereo Dynetic
Stvlus. In addltion to our test findines our Servire Denartment

~.t.i.ol.ds how that

rl.~,lycr..;

:i!.c

(,s;~~.~in:~ti,~n hns tlis(.los,~rl that 1110st

are using imitation Dgnetic Styli.

CONCLUSION:

we cannot guarantee that the performance of Shure

cartridges will meet the published Shure specifications. Accept no

substitute.

The Stereo Dynetic Cartridges.and Stereo Dynetic Stvli are
guaranteed to be free from
one, year from the date of shipment from the factory, provided
all instructions are
cover stylus wear, nor does it cover damage to the stvlus assem-

bly from abuse or mishandling.

PATENT NOTICE:

3,077,521. and 3,077,522.
Copyright

27A518 (7-68)

The Dynetic stylus assembly used in these car-

buy bears the following certification on the

4

grams needle force, allowing the cartridge case to

the categories shown above, the results ranged from

2,)

being

I.~.IIII~II~~(~

~bvioisly, if

~ - ~ . ~

comphed with fully. The Guarantee does not

Manufactured under U. S. Patents 3,055,988,

1968,

Shure Erothers, Inc. Printed in U.S.A.

CASE

FIGURE

cartridge case. Care must be taken

the molded housing of the

-

Inc.

(Note: The

assemblies

Stvlus Assemblv varv

characteFistics. For example;

of

level) ranged from a

of fact, only

~ncr~.>lzing nnl~ln'C;er of

IN

card.+?

any

10%

of the samples met the

of

of

ri$n(,iic

poor p~rfo~.~nnnce-and o1:r

thew returned cartrid~es

imitation Dynetic Stylus is used

Guarantee

elertnt.al and merhaniral

~.

.-

...-

...-

.-

Other patents pending.

2

follow in^

ntvlus

labeled

11.5.

rnauirinrr

inoaerative. Re-

imita-

PhXib--CirI

~ynetic

"

--

---

d~ff

-.-2cts for

-