Shure M91ED-PE User Guide

222 HARTREY AVE.. EVANSTON. IL . 60204 U.S.A.

MODEL M91ED-PE			DATA SHEET
LFB-TRACK		STEREO DYNETICO
		PHONOGRAPH CARTRIDGE
		HEAD ASSEMBLY
		FOR PERPETUUM-EBNER
		"2000" SERIES AUTOMATIC
		TURNTABLES TRACKING FROM
		3/4 .1%	GRAMS (Except 2035)
	SPECIFICATIONS
FREQUENCY	Frori: 20	to 20,000 Hz.
RESPONSE:
OUTPUT VOLTAGE:	5.0 rnillivolts per		channel a t 1,000 Hz.
	a t 5 cm/sec.
C H A N N E L	Nonlinally 25 db		a t 1,000 Hz.
SEPARATION:
C H A N N E L	Witliiri 2	d b of each other
BALANCE:

I N P U T IMPEDANCE: Nom~nally47,000 ohms (per channel). Can be up to 70,000 ohms with almost inaudible clianpe in treauencv- - resDonse- .

I N P U T CAPACITANCE:

-100-500 picofarads per channel including tonea1,rri wiring and amplifier Input capacitance.

INDUCTANCE:	720 millihenries
D.C. RESISTANCE:	630 ohms
STYLUS M O D E L
N91ED	lieplacement : G r ~ pColor-Yellow
	ELLIPTICALLY SHAPED NUDE DIA-
	MOND T I P
	,0002 inch		( 5 microns) side contact radii
	,0007 inch		(17.8 microns)			frontal	radius
	,0010 inch		(25.4 microns)			between	points
		of	contact	with groove.
T R A C K I N G FORCE:	:3L to 1%	grarns
L I G H T T R A C K I N G FORCE W I T H H I G H T R A C K A B I L I T Y : Thc
lightel. the tracking	fol,ce, the	longer t h e		life	of	the stylus and
~ . ccords, p1,ovided the stylus		can	follow	the	g m o r e without

losing contact. A c a r t r ~ d g etracking properly provides an accurate

unbroken fiow of signals from the 1,ecord groove to the amplifier.
Sienals recorded a t	a h 1 ~ 1 i e 1level icm/sec.) are more difficult
to-track properly.	This stereo Dynetic 'cartridge provides high
trackability a t light	tracking forces.

T R A C K A B I L I T Y :

At a stylus force of 1 gram

400 Hz. - 22 cm/sec

1,000 Hz. - 33 cm/sec

10,000 Hz. - 19 cm/sec

( H ~ g h e stylusr forces within specified range improve trackability.)

G E N E R A L : This inodel is an irnuroved hizh aualitv "Hi-Track" stereo phono car.tt.idge nlountcdL in a ~ e ? p e t h u m - k b n e r pickup

I~ead . The Model MYlED-PE is designed specifically for thtl P e ~ . ~ ) e t u ~ ~ m - E b2000n e i .series Autoinatic Turntables (c?xceut 2035)

INSTALLATION

1 Rernove present pickup head and insert Shure Cartridge Head

Asserribly into phono arm.

Care riiust be taken

in

renioval

and inserting of the pickup heads not

to

cause

damage to

the

stylus.

-

F o r

iri:rxirnnrn safctv,

leave

the

stvlus ~ u a i ; don

the

-

-

.~

cai.tridee

d n r ~ n aren~ovalor -insertion of

uickun

Lead

2.

Balancc al'ln

a s

per Perpr,tuurli-Ebncr

instructions

and set

stylus force indicator to r,econilnended tracking force. Forces

g~ .eatel'than the indicated "maxi~nuln"should not be used.

SUGGESTIONS FOR C L E A N I N G YOUR

STYLUS:

T o clean

the

stylus, use

a

camel's-hair

brush

(No.

2

size

o r

smaller)

dipped lightly in alcohol or alcohol-water solution; grain alcohol is preferrcd. (WARNING: Conimercial record o r stylus cleaning solutioz~s may cause cor.l.rbslon and permanent s t y l u s damage.) The alcohol will remove a n y sludge deposits which n:ay have

coated tlie stylus tip.	The	brush bristles should be trimmed to
a length no longer than	?,	inch. ALWAYS brush the stylus with

a forward lnovenient from the rear (terminal end of the cartl,idge) to the front. NEVER brush or wipe the stylus from front to back or side to s ~ d e

RECORD CLEANING: An effective way to clean a record is to

iniriierse	it in	a	solution of	mild dishwashing liquid	detergent
and lukewarm or cool water				(preferably distilled water) . Use a
Lint-free	cloth	to	work the	nlixture into the grooves,	following

the grooves around for a tliorough cleansing. Then, rinse with

clear,	cool or	lukewarm water (preferably distilled) and dry
with a	lint-free	cloth.

EASY STYLUS REPLACEMENT

A

Grasp molded housing of stylus between thumb and forefinger. Gently withdraw stylus by pulling forward out of cartridee. Grasn r e ~ l a r c m e n t stylus betwee; thumb >nd 'forkAGeland insert into stylus socket. Press stylus into socket until molded housing of the stvlus mates w ~ t hthe caFtridge case.- Care must be taken

not to allow the finger		to	slip off
the molded housing	of	the	stylus
resulting in damage	to	the	stylus
tip or shank.

STYLUS REPLACEMENT

SPECIAL NOTE: The Dynetic stylus assembly used in these cartridges is the liiost critical component. To maintain the original uerlormance standards of your cartridge, be certain that a n y replace~nentstylus you buy bears the following .certification on the

package: "This Stereo Dynetlc stylus is precision manufactured by Shure Brothers Inc."

AVOID INFERIOR IMITATIONS. THEY W I L L SERIOUSLY DEGRADE T H E PERFORMANCE O F YOUR CARTRIDGE. ALL

GENUINE "DYNETIC" STYLI ARE MANUFACTURED BY SHURE BROTHERS INC.

GUARANTEE: This Shure product is guaranteed in normal use

to be free from		electrical and mechanical	defects for a period	of
m e year	from	the date of purchase.	Please retain proof	of
purchase	datc.	This guarantee includes all parts and labor.

This guarantee does not include stylus wear.

S H I P P I N G INSTRUCTIONS: Carefully repack t h e unit and return it prepaid to the factory. If outside the United States. return the unit to your dealer or authorized Shure, Service Center f o r repair. The unit will be returned to you p r e p a d .

P A T E N T 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 1972, Shure Brothers Inc.	Printed in U.S.A.
27A934 (LD)