Stewart Audio CVA50-1 Priority PA - Manual (Page 6)

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2.4.2 Unbalanced Input Connections
When using an unbalanced input source and connector, a jumper must
be added between the negative (-) terminals and the ground terminals.
Once this has been done, the unbalanced source can be connected to
the positive (+) and ground terminals. Please refer to the manual of
your input source in case it does not follow the standard pin-out. For
your convenience, pre-wired connectors are available for purchase, see
the next page for details.
NOTE: A jumper is required for connecting an unbalanced
input.
NOTE: The CVA50-1 Priority PA amplifiers does not accept
stereo inputs. Either one side must be selected from the
stereo source or an overload-protected Y-cable must be
used to sum them to mono. It is highly recommended that
you purchase the pre-wired connectors mentioned on the
next page. Damage to source equipment can result from
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Pre-wired unbalanced connectors are available for purchase from Stew-
art Audio. These will allow for a quicker installation with less room for
error when connecting the CVA50-1 Priority PA amplifier to an unbal-
anced source. The summing adapters will properly sum a stereo source
for use with the mono input on the rear of the amplifier without caus-
ing sound cancellation. Part numbers are found below the diagrams.
2.4.3 RCA Input
The first input channel is a stereo RCA jack which is then summed to
mono before the final output. Refer to the diagram below for wiring
directions.
ADPT-RCA
Mono
Female RCA
ADPT-SUMRCA
Stereo
Female RCA
ADPT-SUM35
Stereo
Female 3.5mm
+ Ground
(Shield)
+/Right
+/Left
Shield
Right
Left