Dual Shure M91 MG D Owners Manual

Page 1

Technical datas

Needle:

Recommended stylus
pressure:

Frequency range.
Output:

Output difference
between chan nels:

Isolation between
channels:

Compliance:

Intermodulation
distortion (FIM):

Net weight.
End resistance:

Special accessory:

Information about the pick-up cartridge incorporated
in your Dual automatic turntable

The inconspicuous, but tor the sound quality very important part of your automatic turntable

DN 330

(Shure N 91 MG)

0.6 i 0.1 mil spherical diamond
needle for micro-groove

and stereo records

Color coding: dark grey

1 g 13/4-15 gl
20 c.p.s. to 20 k.c.p.s.

3 08 mV / 1 cm/sec per
channel at 1 k.c.p.s.

Maximum 2 dB at 1 k.c.p.s.

Minimum 25 dB at 1 k.c.p.s.

Horizontal 35 x 1075 cm/dyn
Vertical 25 x 105 cm/dyn

At 1 g stylus pressure, 8 cm/sec
velocity, < 1%

5.5 p

47 KOhm

DN 321 (Shure N 7573l

2.5 mil diamond needle

for 78 rpm-records
Tracking pressure: 3 9

Frequency response, Stereo and crosstalk damping, measured
with equalizer ore-amplifier TVV 46

Test record: DIN 45 541 lrecordlng curve 3180-318-75 usl
Tracking pressure 1 9, record player: Dual 1219

A a eio

mi channel
- "sign;

a 74> i (H1)

465105 2 46310 2 as

em

Raise the tone arm of this phonograph and look underneath. The tiny deVice holding
the diamond stylus is the famous Shure Stereo Dynetic® phono cartridge. it is literally
the heart" of your sound system and as such is as important to the phonograph as a
lens is to a camera. What you hear through the loudspeaker depends first on the
quality and precision of your phono cartridge.

This unit is equipped with the hirii stereo magnetic pick-up cartridge SHUFiE
M 91 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
(SHURE N 75-3) is available as an optional accessory.

For proper balancing of the tonearrn (see
operating instructions for your Dual auto
matic turntablel the needle protector
(weight approximately 0.52 g) should be
removed from the pick-up cartridge (Fig. 2).

The novel snap-on mounting oi this picl<~up
cartridge on the cartridge holder eliminates
all mounting hardware. The snapron mount»
ing secures perfect geometrical alignment
of the stylus tip.

Fig. 2

Removal oi pick-up cartridge from
mounting plate

Remove complete pick~up head from the
tonearm and remove slip-on connectors
from contact prongs of cartridge. Hold the
mounting plate with one hand and pull
down cartridge, The snapron mounting of
the cartridge on the cartridge plate is
shown in Fig. 3.

Shure replacement styli

The Dynetic stylus assembly used in Shure
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
name Oi SHURE. Do not accept imitations!
The original technical data cannot be
guaranteed, further you risk danger in your
records.

Fig. 3

Attention!

The stylus assembly should be removed
from the cartridge lsee Fig. 4l before
mounting or removmg same from the
cartridge holder.

Pickrup cartridges With 1/2 standard mount
ing dlmriiiSions can be mounted on the
cartridge holder with conventional mount
ing hardware,

Fig 4