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OPTIONAL ACCESSORIES
M64 STEREO PREAMPLIFIER
The M64 will furnish the voltage gain and equaliza-
tion necessary to operate magnetic phono cartridges
(such as Shure Stereo Dynetic Cartridges), and tape
playback heads into stereo audio amplifiers and
mixers that have aux. level inputs with no equaliza-
tion such as the Model M688.
A68M MICROPHONE PREAMPLIFIER
The A68M will provide a balanced line input or an
additional microphone channel to the Model M688.
The input may be matched to a low impedance
balanced microphone, a high impedance unbalanced
microphone, or a balanced line. The Aux. Output
is terminated in a shielded cable with phono pin
plug for connection to the M688. The A68M mounts
to the left side of the M688 and is powered by the
M688 power jacks. The A68M's may be mounted
side-by-side t o provide a stereo pair.
A68S STACKING KIT
This accessory consists of brackets for vertical
stacking of an M688 Mixer and any combination of
Shure Mixers or Controllers. An interconnecting
cable is included for connecting one channel. An
additional A68SC (see next column) interconnecting
cable is required for connecting the second stereo
channel.
A68C OUTPUT CABLE KIT
The A68C Output Cable Kit provides a convenient
and flexible method of connecting the microphone
level output of the M688 Mixer to the great variety
of amplifier and input receptacle configurations.
Enables you to connect to virtually any PA system.
Kit Includes:
One 4.6 m (15 ft) two-conductor shielded ca-
ble with male and female professional three-
pin connectors.*
One 305 mm (12 in.) two-conductor shielded
adapter cable with female professional three-
pin audio connector* on one end and Hub-
bell twist lock plug on other end.
One 305 mm (12 in.) single conductor shielded
adapter cable with female professional three-
pin audio connector* on one end and Am-
phenol type MC1 on the other end.
e
One Phone Plug adapter for use with Am-
phenol type MC1 Connector.
A68SC INTERCONNECTING CABLE
This cable is a 305 mm (12 in.) long single conductor
shielded cable with a phono plug on each end for
interconnecting an M688 Mixer in combination with
other Shure mixers or controllers.
A68R RACK PANEL KIT
The kit consists of a 483 mm x 90 mm (19 in. x 31/2
in.) precut rack panel and necessary hardware for
rack mounting of the M688 with its cover in place.
A68L LOCKING PANEL
This panel fits within the front hood of the M688
cover and locks in place to prevent tampering with
the front panel controls.
A67H HANDLEITILT STAND
The A67H provides a convenient means of tilting
the M688 to permit better panel visibility and greater
ease of operation in some conditions. In the locked
(tilt) position, the front panel will be elevated about
20°.
In the free position, the A67H serves as a
rugged carrying handle.
This case is compartmentalized and foam lined for
an M688 and accessories.
A67B BATTERY POWER SUPPLY
The A67B eliminates need to connect the M688
Mixer to a wall outlet. The battery complement is
three Eveready type
222, 216,
or equivalent
9
volt
batteries. At room temperature, the A67B will oper-
ate the M688 continuously for approximately 40
hours.
* Designed to mate with Cannon XL series, Switchcraft A3
(Q.G.) series, or equivalent connector.
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