Crown Audio IQ-SLM8 User Manual
Page 15
Page 15
IQ–SLM-8 System and Load Monitoring IQ System Component
Reference Manual
3/16 in
(0.48 cm)
•
Add an IQ Repeater
for very long loops—greater
than 1,000 feet (305 m)—or when required by
high-capacitance wire. Although we recommend
adding a repeater for loops longer than 1,000
feet, it is often possible to go 2,000 feet (610 m) or
more. The most significant characteristic of the
wire is its capacitance. Lower capacitance allows
longer loops. Unshielded wire usually has less
capacitance.
•
Never use the ground wire in a mic snake line.
It may sometimes be convenient to run Crown
Bus data signals to and from stage monitor ampli-
fiers along unused wire pairs in a mic snake. Do
not use the ground wire which is normally con-
nected to pin 1 on an XLR connector or data
noise will be added to the audio lines. Use only
the signal lines which normally connect to pins 2
and 3 of the XLRs.
Note: Because typical mic
cables have high capacitance, the maximum
possible Crown Bus loop distance will be less.
Outside RF interference is seldom a problem for a
Crown Bus loop—especially if shielded twisted-pair
wire is used. However, there are extreme situations
when fiber optic wiring is recommended. For example,
locating a Crown Bus loop next to an AM radio trans-
mission line may require fiber optic cabling. An ex-
tremely long Crown Bus loop distance may also
require fiber optic cabling.
There are three different types of connectors used for
Crown Bus wiring on IQ components. These include
DIN connectors, RJ-45 connectors and “Euro-style”
removable barrier strip plugs. The
SLM-8 uses a four-
terminal removable barrier strip connector that ac-
cepts a complementary screw-terminal plug like the
one shown in Figure 4.7.
Fig. 4.8 Crown Bus Wiring for Removable Barrier Blocks
Fig. 4.9 Crown Bus Wiring for 5-pin DIN Input
Fig. 4.10 Crown Bus Wiring for RJ-45 Input
Fig. 4.7 A Screw-Terminal Plug
The following examples show how to connect the
SLM-
8 to other IQ components on the Crown Bus: