Output Level: Approximately |
-67dbm |
using |
Shure M3D |
or |
M7D Stereo Dynetic Cartridge from the |
RCA Test Record |
No. |
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12-5-71A. (Output measured with |
250 ohm output |
impedance.) |
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Insertion LOSS: 28db measured with conditions as outlined in "output level." The insertion loss may vary with different output load impedances.
Hum Shielding: The M66 Equalizer is enclosed in an especially designed steel case for maximum shielding.
The Equalizer case is 3%" wide, 3" high, and 5%" deep. The panel plate is 5" wide and 35/16" high.
INSTALLATION: The Model M66 Broadcast Stereo Equalizer is designed t o be mounted on a control panel with the switch shafts coming through the an el or t o be mounted on a bracket, (supplied), for permanent installation where the switch shafts need not be accessible.
The following steps are recommended for mounting t o a control panel.
I.Using the panel plate of the Equalizer as a template, locate and mark the 2 mounting screw clearance holes and the 2 switch shaft clearance holes.
2. Drill 3/16 diameter holes t o clear the |
mounting screws and |
25/64 diameter holes t o clear switch |
shafts. |
3.Mount equalizer case and panel plate t o the panel using the
#8-32 machine screws. In this case, use the angle bracket
as a spacer between the equalizer case and the panel. This allows clearance for the switch mounting nuts.
4. C u t switch shafts to proper length and install switch knobs.
+10
e
24
:.PO
LO
LTW
W
2 +lo
%
Y
0
20 |
M |
90 |
8,000 |
5POO |
IOPOO |
a 0 W |
FREQUENCY IN CYCLES PER SECOND
COMPENSATED FREQUENCYRESPONSE
FIG. B
CONNECTIONS: The Model M66 Equalizer is designed for use with a balanced line output or with an unbalanced line output.
For a balanced line output connection, the "high" |
side |
o f the |
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line should be connected t o the terminal marked + and the |
"low" |
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side of the line should be connected |
t o the adiacent "out" |
terminal |
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(not coded). The shield or |
ground |
should |
be connected |
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t o the |
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terminal marked GND. |
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For an unbalanced line,output connection, the "high" side of |
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the line should be connectdd |
t o the |
OUT terminal |
marked |
+ and |
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the ground side o f |
the line |
should |
be connected |
t o both |
the ad- |
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jacent OUT terminal and the G N D terminal. |
If a separate shield is |
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used, this may, also, be connected t o the G N D terminal. |
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The two channel input (terminals |
marked I N ) |
has |
a |
common |
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ground, as indicated on the |
terminal |
board. |
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In the " M O N O " |
switch |
position, the two channel inputs are |
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shorted together for |
monaural operation. |
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GUARANTEE: This Shure Broadcast Stereo Equalizer is guar-
teed to be free from electrical and mechanical defects for a period
of one year from date of shipment from the factory, provided all
instructions |
are |
complied |
with fully. |
In case o f damage, |
it is |
es- |
sential that |
you |
carefully |
repack the |
unit and return it t o |
the |
fac- |
tory for repair. |
Our guarantee is voided if the basic assembly has |
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been subiected |
t o unreasonably rough handling. |
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FREQUENCY IN CYCLES PER SECOND
FREQUENCY RESPONSE
FIG. C