Shure M91E-P20 User Guide
222
HARTREY
AVE..
EVANSTON,
AREACOOE31Z/328~9000 . CABLE:SHUREMlCRO
IL.
60204 U.S.A.
MODEL
m-~fl~gmm
M91
E-P2O
DATA
STEREO DYNETICO
PHONOGRAPH CARTRIDGE
SHEET
HEAD ASSEMBLY
SPECIFICATIONS
FREQUENCY
RESPONSE: From 20 to 20,000 Hz.
OUTPUT VOLTAGE: 5.0 millivolts per channel at 1,000
CHANNEL
SEPARATION: Nominally over 25 db at 1,000 Hz. (cps)
CHANNEL
BALANCE: Within 2 db of each other
RECOMMENDED
LOAD IMPEDANCE: 47,000 ohms (per channel)
INDUCTANCE
D.C. RESISTANCE: 630 ohms
STYLUS MODEL Replacement: Grip Color-Black
N91 E ELLIPTICAL SHAPED DIAMOND TIP
TRACKING FORCE:
TRACKABILITY:
At a stylus force of 1 gram
(Higher stylus forces within specified range improve trackability.)
:
at
5
cm/sec.
720 millihenries
.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
.?/4
to 1% grams
400 Hz.
1,000 Hz. - 28 cm/sec
10,000 Hz. - 18 cm/sec
-
20 cm/sec
(cps)
Hz.
(cps)
INSTALLATION
GENERAL: This model is an improved high qualit "Hi-Track"
stereo phono cartridge mounted in a
head. The Model
Perpetuum-Ebner Models 2018, 2020, and 2040 Automatic Turntables.
1. Remove present pickup head and insert Shure Cartridge Head
Assembly into phono arm. Care must be taken in removal
and inserting of the pickup heads not to cause damage to
the stylus.
2. Balance arm as per Perpetuum-Ebner instructions and set
stylus force indicator to recommended tracking force. Forces
greater than the indicated "maximum" should not be used.
M91E-P20 is designed specifically for the
~erpetuum-6bner pickup
Suggestions for Cleaning Your Stylus
To clean the stylus, use a camel's-hair brush
smaller) dipped lightly in alcohol. The alcohol will remove any
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) to
the stylus from front to back or side to side.
the
front. Never brush or wipe
(No.
2 size or
1/4
inch.
EASY STYLUS REPLACEMENT
Grasp molded housing of stylus
between
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 molded housing of the stylus mates with the
cartridge 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.
SPEC1A.L NOTE: The Dynetic stylus assembly used in these cartridges is the most critical component. To maintain the original
performance standards of your cartridge, be certain that any replacement stylus you buy bears the following certification on the
package:
by Shure Brothers Inc."
DEGRADE THE PERFORMANCE OF YOUR CARTRIDGE. ALL
GENUINE
SHURE BROTHERS INC.
thumband forefinger. Gently
STYLUS
REPLACEMENT
"This Stereo
AVOID INFERIOR IMITATIONS. THEY WILL SERIOUSLY
DYNETIC" STYLI ARE MANUFACTURED
Dynetic stylus is precision manufactured
BY
GUARANTEE: This Shure product is guaranteed in normal use
to be free from electrical and mechanical defects for a oeriod of
one year from the date of purchase. Please retain proof of
purchase date. This guarantee includes all parts and labor.
This guarantee does not include stylus wear.
SHIPPING INSTRUCTIONS: Carefully
return it prepaid to the factory. If outside the United States,
return the unit to your dealer or authorized Shure Service Center
for repair. The unit
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 1971, Shure Brothers Inc.
27A859
(KK)
will be returned to you prepaid.
.repack the unit and
Printed in U.S.A.
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