Crown Audio IQ-P.I.P.-SMT - Manual (Page 27)

Page 27
IQ P.I.P.–SMT
• Do not connect audio and
data grounds together. For
example, do not connect the
audio ground to the Crown
Bus ground.
• Turn the entire sound system
off before changing any con-
nections. Turn the level con-
trols down before powering
the system back up. Crown is
not liable for damage in-
curred when any transducer
or component is overdriven.
IMPOR IMPOR IMPOR IMPOR IMPORT T T T TANT ANT ANT ANT ANT::::: Do not feed a signal
into the phone jacks on the back
panel of the amplifier (if provided).
The phone jacks are wired in parallel
with the output of the
P.I.P. connector
inside the amplifier. Any audio signal
fed into the phone jacks could feed
back into the output of the
IQ–P.I.P.–
SMT and generate a distorted input
signal. The phone jacks can be used
to “daisy chain” the post-processed
signal from the
IQ–P.I.P.–SMT to the
inputs of other amplifiers.
DO NOT USE THE CHANNEL 2 IN-
PUT if the amplifier is used in either
Bridge-Mono or Parallel-Mono mode.
For additional information on audio
input connection please refer to the
amplifier’s
Reference or Owner‘s
Manual. It contains helpful informa-
tion on preventing unwanted sub-
sonic frequencies, radio frequency
interference, ground loops, and feed-
back oscillation.
4.8 Using the AUX Connector
The IQ System offers tremendous
flexibility and the auxiliary feature
connector provides a means of tap-
ping into it. It can be used to turn
something on/off, send a signal to
another component and receive a
signal from another component.
The AUX connector is a 3-pin male
mini XLR connector. Pins 1 and 3 are
used to send a signal and pins 1 and
2 are used to receive a signal
.
4.8.1 AUX Output
When the auxiliary feature is turned
on by the
IQ System software +15
VDC is supplied across pins 1
(ground) and 3 (+). A total of 10
milliamps of current is available. A
1.5 k ohm resistor protects against
shorts.
There are many possible uses for the
AUX output. For example, it can be
used to turn on auxiliary cooling fans.
To do this the AUX connector would
be used to close a relay. The relay
would then turn the fans on or off.
This is shown in Figure 4.15.
Note: A Crown part number is pro-
vided in the above illustration for a
suitable solid-state relay (C 7308-7).
Contact your local Crown represen-
tative or the Crown factory Parts De-
partment (219-294-8200) to order.
By monitoring the operating condi-
tion of amplifiers with the
IQ System
software, the need for additional
cooling will be apparent. The same
software could then be used to turn
on the appropriate AUX connector.
(For more information about turning
the auxiliary feature on/off, consult
the IQ software
Online Help System.)
In addition to the preceding ex-
amples, the AUX ports of more than
one IQ component can be used to
send binary codes to auxiliary equip-
ment. For example, eight AUX ports
can be used to send 8-bit binary
codes to external equipment.
4.8.2 AUX Input
Depending on the IQ software being
used, the AUX connector can be