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provided. (The lock washers
are important because they
bind the P.I.P. to the chassis
ground of the amplifier.)
5. Connect input and output wir-
ing.
6. Plug in the amplifier and turn it
on. Adjust its level controls to a
desired setting.
Do not tamper with the circuitry.
Circuit changes made by unau-
thorized personnel, or unautho-
rized circuit modifications are not
allowed.
Remember: Crown is not liable
for any damage resulting from
overdriving other components in
your sound system.
Important: If the amplifier is used
in either Bridged-Mono or Paral-
lel-Mono mode, you must turn the
Ch. 2 amplifier level control off
(fully counterclockwise). The in-
put and level control of Ch. 2 are
not defeated in mono mode so
any signal applied to Ch. 2 will
beat against the signal in Ch. 1.
Refer to the amplifier Reference
Manual for more information about
Bridged-Mono or Parallel-Mono
modes of operation.
Mono-Mode Wiring
There are two ways to install the
P.I.P.-PA in a mono configuration.
One method uses the amplifier in
STEREO (Dual) mode. The other
Page 8
method uses BRIDGED-MONO or
PARALLEL-MONO mode.
If you want to use the P.I.P.-PA in
a mono system but still want to
individually control the level of
each amp channel, follow these
instructions: Place the amplifier in
STEREO (Dual) mode, being care-
ful to follow the instructions in your
amplifier's Reference Manual.
Then simply "daisy chain" the au-
dio signal from one input of the
P.I.P.-PA to the other. Either the
mic inputs or the line-level inputs
can be paralleled to give both
channels the same signal. (Daisy
chaining the inputs reduces the
input impedance to half.)
You can also mix this technique in
any fashion you desire. For ex-
ample, you could daisy chain a
single microphone to both mic
inputs while feeding the line in-
puts each with a different line-
level feed and visa versa. In this
way you could feed background
music from a radio to one chan-
nel, audio from a tape recorder to
another channel and enable both
channels to be interrupted by the
same paging mic.
The second method for wiring a
mono system gives less flexibility
at the inputs but provides more
power to a single mono output.
This technique requires that you
place your amplifier in either
BRIDGED-MONO or PARALLEL-
P .I.P .–PA
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