8-4
Chapter 8 EPS and IDNet 2 Wiring
EPS Class B IDNAC Wiring (continued)
IDNAC Speaker
Wiring
Application
Guidelines
CLASS B Audio Wiring:
Connect a maximum of 127 IDNAC speakers to Class B wired audio
NAC. A Class B wired audio NAC connected to TrueAlert ES speakers can employ T-Tap and
Wire Branch wiring topologies.
Do not connect an End-Of-Line Resistor to a class B wired audio NAC connected to
TrueAlert ES speakers.
CLASS A Audio Wiring:
Connect a maximum of 70 TrueAlert ES speakers to a Class A audio
NAC. Speakers must be wired in a standard Class A loop fashion.
Except as noted above, audio NAC wiring connected to TrueAlert ES speakers must follow the
requirements of the connected 4100ES amplifier.
Ferrite Beads Ferrite beads must be used for Class B wiring.
1. Install the ferrite bead close to the EPS field wiring
terminals for lowest radiated emissions (before the wires
leave the box).
2. Loop the wires through the bead as shown.
Figure 8-2. Ferrite Bead Installation