Mono Mic Input Channel Wiring; Audio Connections - AudioArts Engineering R-5 Owner's Manual

3 2 1
6 5 4
9 8 7
12 11 10
I/O connector plug (rear
view, as it would be seen
while wiring); the beveled
orientation corners shown
correspond to the plug's
mating PCB-mounted
sockets.
For more information on
using balanced and un–
balanced equipment com–
binations with the R-5
console, see page 1-8.
!
R-5 / Jan 97 R-5 / Mar 97

MONO MIC INPUT CHANNEL WIRING

This section calls out specific pin-by-pin wiring instructions for microphone
input channels, both audio and logic (control) connectors. If you need more
general information concerning the R-5 console wiring system and supplied
tools, please refer to Chapter One, pages 1-6 and 1-7.
Mono Mic Input (Audio Connections)
Mono mic input channel audio connections are made at the channel's
LOWER 12-pin AUDIO connector. These consist of electronically balanced
inputs for two microphones (A and B, pins 1 thru 6) and an unbalanced
mono patch insert point (pins 7 thru 12).
Pin 1 - MIC A INPUT, shield
Pin 2 - MIC A INPUT, low
Pin 3 - MIC A INPUT, high
Pin 4 - MIC B INPUT, shield
Pin 5 - MIC B INPUT, low
Pin 6 - MIC B INPUT, high
The R-5 console will accept balanced, low impedance (150Ω nom.)
microphone signals up to -12dBu levels. Individual gain trims for A and B
sources (each with a 32dB range) allow you to match various incoming
signal levels (with a typical -50dBu mic source signal, the resulting input
gain trim range will be -12dB to +20dB). Maximum deliverable mic gain is
85dB. Phantom power (+18V) is built-in. (While this is rarely necessary,
phantom power can be disabled if required—see Appendix, page A-4).
Mic channel insert points are unbalanced (nominal level -2.5dBu,
nominal insert out impedance 100Ω; insert in 10KΩ) and are intended for
outboard signal processing (equalization, reverb, digital processing, etc.).
If you will be using unbalanced equipment at these ports, be sure to tie LOW
and SHIELD together at the source end of each patch.
Pin 7 - INSERT OUT, shield
Pin 8 - INSERT OUT, low
Pin 9 - INSERT OUT, high
Pin 10 - INSERT IN, shield
Pin 11 - INSERT IN, low
Pin 12 - INSERT IN, high
If you do plan to use an insert patch point as an outboard processing
loop, you must remove the console's built-in jumper resistor on the MB-5
Motherboard PCB (see APPENDIX, page A-7); otherwise signal will not pass
through your external equipment. If you will be using an INSERT OUT port
as a DIRECT OUT feed to another input, without bringing the signal back
into the channel's INSERT IN port, the built-in jumper resistor should
remain in place to preserve the signal path through the input channel.
M
ONO
Always be careful to double
check pin numbering on the
connector block and the wiring
diagram before inserting the pin
in the block!
Insert points are jumpered at the factory;
if you plan to use them, they must be
activated by removing a 10Ω resistor
from the console's MB-5 Motherboard
PCB. See APPENDIX, page A-7.
M I
IC NPUTS
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