Shure M81ECS User Guide

222

HARTREY

AVE..

EVANSTON.

@

AREA

CODE

312,328-9000

CABLE:

IL.

60204

SHUREMICRO

U.S.A.

THE PREMIER

m-TRACK

FAMILY

OF STEREO SOUND REPRODUCERS

M81ECS

STEREO DYNETIC@

PHONOGRAPH

CARTRIDGE

EASY-MOUNT

CARTRIDGE AND STYLI SPECIFICATIONS

within

N75EC
10 X 1B&
(.0004
,0007 in.)
Biradial
(Elliptical)

N75-3.1

N75-3.1
64 microns

64 microns

(.0025 in.)

(.0025 in.)

spherical

iOptional 78 rpm Stylus:
'Output voltages glven for stereo cut record. For MONO cut record,

**Tracking forces greater than maximum
NET WEIGHT:
INDUCTANCE:
DC RESISTANCE: 7'40 ohms

OPTIMUM LOAD: 47,000 ohms resistance in parallel with 400 to 500

iarads total capacitance per channel. Load resistance can be up to 70,000
ohms
tance includes both the tone arm wiring and amplifier input

FOUR-CHANNEL: This Stereo Dynetic@ cartridge is compatible with all
iour-channel matrix systems.

MONOPHONIC OPERATION: Set
or

right channels in parallel.

CONNECTIONS (see Figure
Right "hot" lead (usually red) to

"R," right ground (usually green)
to

white) to "L," left ground (usually

blue) to "LG." If metal head
causing ground loop hum, remove
the ground tab. The metallic car­tridge shield is disconnected from
the
removal of the ground tab.

CAUTION: Do not make solder

connections

STYLUS REPLACEMENT (see Fig­ure 2):
stylus and gently pull forward out
of cartridge. Insert replacement
stylus into socket and press until
housing mates with cartridge case.

"EASY-MOUNT" MOUNTING
mm (1/2 In.) mounting centen]:
Mounting screws are provided.

1.

2. Remove cartridge from snap-in

3.

4.

5.

6. Retnsert stylus (see Stylus Re-

RECOMMENDED STYLUS CLEANING: Use a camel's hair brush (No. 2 size
or smaller), trimmed to
an
stylus damage or
brush or wipe stylus from front to back or side to side.

TO PRESERVE STYLUS LIFE:

1. Follow turntable or tone arm instructions when adjusting antlskating

2.

3.

4.

5.

6. Use proper vertical tracking force setting for each cartridge.

7. Do not use badly warped, cracked or imperfect records.

8. When dusting the turntable protect the stylus with the stylus guard.
SPECIAL NOTE:
cartridee. be certain that anv
lowini iertification on the package: "This bynet'1c@ stilus is
manufactured by Shure Brothers Inc." AVOID INFERIOR IMITATIONS. THEY
WILL SERIOUSLY DEGRADE THE PERFORMANCE OF YOUR CARTRIDGE.
ALL GENUINE "DYNETICO" STYLI ARE MANUFACTURED BY SHURE
BROTHERS
For more information on your Shure stylus, write for booklet:
the Small World of a Stylus."

FULL ONE YEAR WARRANTY: Shure Brothers Incorporated ("Shure"),
222 Hartrey Avenue,
product that it will be free, in normal use, of any defects in workmanship
and materials for a
retain proof of date of purchase. Shure is not liable for any
damages. If this Shure product has any defects as described above, care­fully repack the unit and return it prepaid to the above address.
are not in
Service Center for repair. The
turned to you promptly, and if it cannot be repaired or replaced, you may
elect to receive a refund. This warranty does not include stylus wear.

PATENT NOTICE: Cartridge and stylus manufactured under one or more
of the following U.S. patents: 3,055,988, 3,077,521, 3,077,522, and 3,463,889.

Copyright 1976, Shure Brothers Inc.
27A1276 (PD) Printed in U.S.A.

Brown

X

Dark

Dark

Green

I

Green

I

output voltage at both left channel and right channel cartridge
will be 71% of figures above.

w~th almost no audible change in frequency response. Total capaci-

"AS-B." If ampliiier is not equipped with this switch, connect left and

"RG." Left "hot" lead (usually

r~ght channel ground by the

to cartridge terminals.

Grasp molded housing of

Remove stylus guard and stylus

(see Stylus Replacement).
bracket (see Figure

Attach bracket to tone arm

head or plug-in shell in ac­cordance with turntable manu­facturer's instructions. General­ly, the top of the bracket

should be flat against the top
of the head or shell.

connect leads to cartridge (see

1).

Figure

Insert cartridee into sna~-in

bracket (see
placement).

alcohol-distilled

force.
Do not handle the tone arm while it is in operation since this may
cause the arm to sweep across the record.
If it is necessary to manually place the tone arm in the record groove

while turntable is rotating, release it as soon as the stylus engages the
record groove.
Correct improper set-down adjustment or malfunction of the turntable
changing mechanism to prevent the stylus from striking the edge of the
turntable or record. Do not stack more records than turntable manufac­turer recommends.
Take care to properly insert the stylus into the cartridge assembly and
the cartridge and shell assembly into the tone arm receptacle.

FYgure

INC. LOOK FOR THE NAME SHURE ON THE STYLUS GRIP.

the United States, return the unit to your dealer or authorized

20,000

Hz

20 to

20 to

6.2 mV

mV

6.2
20,000

"Iogo

6.6

615

corrosion.

Hz

Set amplifier to "MONO" or

grams

mill~henries

1):

[12.7

3).

3).

.

approx~mately 6 mm (1/4 in.), dipped in alcohol or

water solution. Commercial cleaning solutions may cause

Always brush stylus from back to front; never

To maintain the original performance standards of your

Evdnston, Illinois 60204, warrants to the owner of this

per~od of one year from date of purchase. You should

re~lacement stvlus vou buv bears the fol-

,

20 to

9.3 mV

20 dB

to 4

at

2 dB

1

kHz

grams

-

- -

-

wz

wz

to

grams

1

1

funct~on switch on amplifier to "MONO"

IS

~~H~ELDOF~ARTRID~~MUSTBEPLACE~

y~~~::;rr:~P~~E:"CK'NG

$is

/

ind~cated should not be used.

LLlFT

OF

.

unlt will be repaired or replaced and re-

400 Hz - 26 cm/zec

2

1000 Hz-37 cmlsec

10:000 Hz

at 3 grams

3

1

"A+B."

FIGURE

2

HERE

WiH

THUMBNAIL

ClRTRlDriC FROM

FIQURE

3

-

12

term~nals

pico-

clrcuit.

cArTR'""rw"

"OLE

OF

iw

FOR

REMOVAL

BBnCKLT

precision

"A

Visit to

consequent~al

If you

cmlsec