Owner manual

Page 21
Reference Manual
P.I.P.-RPA
Remember: If a remote control pot
value other than 10 K ohms is used,
the scaling resistor will also have to
be changed as described in Section
A.1.
A.4 Signal Processing
It is possible to use the audio bus
inputs and outputs as a processor
loop for a compressor, limiter or
equalizer. To do this, remove resistor
R97 for Channel 1 and R110 for Chan-
nel 2. They are located on the top
circuit board and are shown in Fig-
ures A.1 and 3.19. Section A.1 con-
tains brief instructions for gaining
access to the component side of the
top circuit board.
After the components are removed,
use the audio bus output to drive the
input of the external processor (re-
member, these are unbalanced
lines). Connect the output of the ex-
ternal processor to the audio bus
input through the specified 10 K re-
sistor (see Section 3.8). See Section
4 for the input and output capabilities
of the audio bus.
Fig. A.4 Remote Control Limit
Resistor Value/Max Attenuation
The table in Figure A.4 shows the
resistor value to use for different maxi-
mum attenuation values.
Note: The values in Figure A.4 are for
use with a 10 K remote control pot
only. If a different value pot is used,
the following equation will solve for
the correct resistor value:
“R
L
” is the value of the limit resistor in
kilohms. “V
L
” is the minimum desired
remote control voltage in volts. It can
be found by selecting the maximum
desired attenuation from either Fig-
ure A.4 or 3.15 and reading the volt-
age required for that attenuation. “R
P
”
is the value of the pot used for the
remote control in kilohms.