Audio Signal Wiring And Network Basics; A Closer Look At Audio Signal Wiring - Crown IQ-PIP-USP3 Reference Manual

IQ-PIP-USP3/CN

5 Audio Signal Wiring and Network Basics

This section provides additional information about audio signal wiring and TCP/IQ Network
basics. For more information about any of these topics, contact Crown Technical Support.

5.1 A Closer Look at Audio Signal Wiring

Balanced audio inputs are connected to the IQ-PIP-USP3/CN through a 5-pin removable
barrier block. The audio cables should be wired in the following manner (See Figure 5.1)
Figure 5.1 Input Wiring for the IQ-PIP-USP3/CN
If possible, the use of balanced wiring is strongly recommended. Some important guide-
lines follow.
• Always use shielded wire. The higher the density of the shield (the outer conductor) the
better. Spiral wrapped shield is not recommended.
• When using unbalanced lines keep the cables as short as possible. Avoid lengths greater
than 10 feet (3 meters).
• Do not run the audio input cables together with the high-level wiring such as loud-
speaker wires or AC cords. (This lessens the chance of hum and noise being induced into
the input cables.)
• Turn the entire sound system off before changing any connections. Turn the level con-
trols down before powering the system back up. Crown is not liable for damage incurred
when any transducer or component is overdriven.
DO NOT USE THE CHANNEL 2 INPUT if the amplifier is used in either Bridge-Mono or
Parallel-Mono mode.
For additional information on audio input wiring please refer to the Crown Amplifier Appli-
cation Guide available online at www.crownaudio.com. It contains helpful information on
preventing unwanted subsonic frequencies, radio frequency interference, ground loops,
and feedback oscillation.
page 28
Reference Manual