Shure m 91 mgd owners manual

Page 1

Information about the pick-up cartridge incorporated in your

Dual automatic turntable

SHURE M 91 MG-D

This unit is equipped With the hi-ii stereo magnetic pick-up
cartridge SHURE M 9t MG~D. The standard 0.6 mil diamond
stylus permits tracking of stereo- and LP records For 78 RPM
records a replacement stylus assembly DN 321 (SHUFlE
N 75-3) is available as an optional accessory.

Technical doles

Needle

Recommended stylus
pressure:

Frequency range
Output:

Output difference
between channels

Isolation between
channels:

Compliance:

lntermodulation distortion:

Net weight
End resistance

Special accessory.

DN 330

(Shure N 91 M-G)

0.6 101 mil spherical diamond
needle for all micro-groove
and stereo records

Color coding: dark grey

I 9 (A-15 9)
2D cps. to 20 k.c.p.s.

Minimum 0.8 mV/l crfilsec per
channel ati k.c.p.s.
Maximum l.6 mV/ 1 cmlsec per
channel atl k.i:.p.s.

Maxtmum 2 dB at l k.c.p,s

Minimum 25 dB at l k.c_p.s

Horizontal 35 x 10- cm/dyn
Vertical 25 x l0- cm/dyn

At l g stylus pressure. 8 cm/sec
velocity. less than 3%

5.5 p

47 K 9

ON 321 (Shure N 75-3)

2.5 mil diamond needle

for 78 rpm-records

Tracking pressure 3 9

Frequency response. Stereo and crosstalk damping, measured
with equalizer pre-empltfier WV 46

Test record: DIN 45541 (recording curve 3180-318-75 its)
Tracking pressure 1 9. record player.- Dual I219

For proper balancing of the tonearm
(see operating instructions for your
Dual automatic turntable) the needle
protector (weight approximately 0.52 9)
should be removed from the pickup
cartridge (Fig. 2),

The novel snap-on mounting of this
pick-up cartridge on the cartridge holder
eliminates all mounting hardware. The
snap-on mounting secures perfect geo-
metrical aiignment of the stylus tip

Retrieval ol pick-up cartridge from
mounting plate

Remove complete pick-up head irorn the
tonearm and remove slip-on connectors
from contact prongs of cartridge. Hold
the mounting plate With one hand and
pull down cartridge, The snap-on mount- Fig. 3
ing of the cartridge on the cartridge

plate is shown in Fig. 3,

Attentionl

The stylus assembly should be removed
from the cartridge (see Fig. 4) before
mounting or removing same from the
cartridge holder.

Pick-up cartridges with V;" standard
mounting dimensions can be mounted
on the cartridge holder with conven-
tional mounting hardware Fig. 4

.J