R-5 / Mar 97
R-5 / Jan 97
INSERT POINT BRIDGING RESISTORS
R-5 console mono mic input channels have built-in insert patch points.
These patch points are bridged at the factory with a 10Ω resistor so signal
will pass through the input channel without any external gear installed.
If you will not be using the insert points, or will only be utilizing the
INSERT OUT port (for use as a direct output from the input channel) there
is no need to modify anything. If, however, you plan to use the insert point
as a pair of I/O ports for an outboard processing loop, with the signal
leaving the console from INSERT OUT and returning after processing to
INSERT IN, it will be necessary to remove the insert bridging resistor for
that channel.
There are two bridging resistors; both are 10Ω, with one for mic input
channel 1 (resistor "aR9") and one for mic input channel 2 (resistor
"bR9"). These are shown on the schematic drawings at coordinates D-7
(pages 9-2 and 9-3) and on the MB-5 Motherboard PCB pictorial (page 9-12)
in the upper righthand corner of the page. The photo below shows a close-
up of the pertinent section of the board. Note once the resistor(s) are
removed, each position has two thru-hole pads for jumper replacement
should you decide to go back to the original factory configuration.
Rear view of MB-5 Motherboard PCB (detail). The mono mic input insert
point bridging resistors shown must be removed if you plan to use external
processing loops in the signal chain.
A
PPENDIX
A - 7
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