222
HARTREY
AVE..
EVANSTON.
IL.
60204
U.S.A.
--
AREA
CODE
312j328.9000
CABLE:
SWUREMICRO
MODEL
M91G
DATA SHEET
m-TRACK
STEREO DYNETIC@
EASY-MOUNT
PHONOGRAPH CARTRIDGE
SPECIFICATIONS
M91, M92 AND M93 CARTRIDGE SERIES
N91,
N92
AND N93 STYLI SERIES
TRACKABILITY:
M91E and M91G at
1
gram stvlus force
-
400 Hz.
-
20 crn/sec.
1,000 Hz.
-
28
cm/sec.
10,000 Hz.
-
18 cm/sec.
M92E at
1
gram stylus force
400 Hz.
-
18 cm/sec.
1,000 Hz.
-
26 cm/sec.
10,000 Hz.
-
15 cm/sec.
M93E at 2 gram stylus force
*
The N75-3 stylus may be used to reproduce the standard 78
rpm records. In this case, the amplifier should be set to "Mon-
aural" or
"A+
B."
Stylus
Color
Grip
-
Black
Yellow
Light
Green
Gray
Green
---
Output Voltage
(1,000
Hz.
at
5
cm/sec.)
5 0 millivolts
6.2 millivolts
6.2 millivolts
5.0 millivolts
--
-
6.2 millivolts
Model
Number
M91E
M92E
M93E
M91G
400
Hz.
-
18
cm/sec.
1,000
Hz.
-
25
cm/sec.
10,000
Hz.
-
13
cm/sec.
..
Tracking
(Grams)
.?/,
to
1?h
"k
to
l?,2
I
1% to 3
z?
to
1?h
-
~.
-
1% to 3
Diamond Stylus
Replacement
N91E Elliptical Sidc
Contact Rad~us
:
,0002~ (.005 mm)
Frontal Radlus
:
.0007" (.018 mm)
N92E Elliptical Side
Contact Radius
:
.0002" (.005 mm)
Frontal Radlus
:
.0007" (.018 mm)
N93E Elliptical Side
Contact Radius
:
.00041f (.010 mm)
Frontal Radius
:
.0007" (.018 mm)
N91G Radius
:
.0006" (.015 mm)
N75-3, *Radius
:
.0025" (.064 mm)
(Higher stylus foroes within specified range improve trackahility.)
FREQUENCY RESPONSE: From 20 to 20,000
Hz.
CHANNEL SEPARATION:
25
db
at 1,000
Hz.
RECOMMENDED LOAD IMPEDANCE: 47,000 ohms per channel
INDUCTANCE: 720 millihenries
D.C. RESISTANCE: 630 ohms.
MOUNTING: Standard
f/z"
(12.7 mm) mounting center using new
"Easy-Mount" snap-in bracket.
WEIGHT: 5 grams.
TERMINALS: 4 terminals.
GENERAL: The
M91, M92 and M93 Series of High Trackability
Dynetic phonograph cartridges has been developed for use with
all high fidelity amplifiers having magnetic and constant velocity
inputs.
MOUNTING: The bracket for each cartridge has standard
'/z"
mounting centers. Hardware is provided for mounting purposes
(The brass screws have British threads.)
1.
Remove stylus guard and stylus from cartridge. (See para-
graph on stylus
replacenlent.)
2. Remove cartridge from "Easy-Mount" snap-in bracket. (See
Figure
1)
3. Start mounting screws into tone arrn head or plug-in shell.
4. Slip "Easy-Mount" bracket under heads
of
mounting screws
and tighten screws securely.
5.
Connect leads to phono-cartridge. Note color code for proper.
connection
to terminal
"L."
"R."
"LG"
and
"RG"
as In-
dicated in
tone-arm instruction rnanual.
6. Insert cartridge into "Easy-Mount" snap-in bracket. (Set.
Figure
11
SHIELD
OF
CARTRIDGE
MUST
BE
PLACED
UNDER
TAB
OF
BRACKET
BEFORE
LOCKING CARTRIDGE
BUhW
IN
BUMP
IN
FRONT
HOLE
OF
BRACKET
MOLE
OF
0°F
LLIFT
HERE
WITH
THUMBNAIL
FOR
REMOVAL
OF
CARTRIDGE
FROM
BRACKET
CARTRIDGE AND BRACKET ASSEMBLY
FIGURE
I
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