Specifications
Existing system renovations and expansions often require different amplifier configurations in different zone groups. For example, an existing central
amplifier paging system may be zoned, and then expanded by adding amplified speakers or zone amplifiers. With the appropriate programming switch
selections, the following are some examples of mixed system possibilities.
A. FIGURE 2 AND FIGURE 6
B. FIGURE 2 AND FIGURE 7
C. FIGURE 2 AND FIGURE 8
D. FIGURE 3 AND FIGURE 6
E. FIGURE 3 AND FIGURE 7
F. FIGURE 3 AND FIGURE 8
G. FIGURE 4 AND FIGURE 6
H. FIGURE 4 AND FIGURE 7
I. FIGURE 4 AND FIGURE 8
J. FIGURE 5 AND FIGURE 6
K. FIGURE 5 AND FIGURE 7
L. FIGURE 5 AND FIGURE 8
In mixed systems, the different amplifier configurations must be installed in different zone groups. It is not possible to mix different amplifier
configurations within the same zone group.
Maximum amplifier and speaker capacity for each zone group and the total system is shown in Chart 9.
CHART 9: MAXIMUM AMPLIFIER AND SPEAKER CAPABILITY
MAXIMUM CAPACITY
AMPLIFIER CONFIGURATION TOTAL SYSTEM EACH ZONE GROUP
CENTRAL AMPLIFIER(S) 150W @ 70V
100W @ 25V
70W @ 70V
25W @ 25V
(SEE NOTE 1)
ZONE AMPLIFIERS OR
SPEAKER-AMPLIFIERS
150 AMPLIFIERS
INPUTS
75 AMPLIFIER
INPUTS
(SEE NOTE 2)
NOTES
1. The Zone Control can switch an audio input from a central amplifier of up to 150W @ 70V, or 100W @ 25V. This TOTAL SYSTEM
audio input
can be distributed to up to 4 zone groups, provided no single zone group exceeds:
(A) 70W @ 70V, leaving 80W for the remaining 3 groups.
- or -
(B) 25W @ 25V, leaving 75W for the remaining 3 groups.
2. The Zone Control can switch its preamplifier audio output to the 600 ohm inputs of up to 150 zone amplifiers or speaker-amplifiers. This TOTAL
SYSTEM audio output can be distributed to up to 12 zones, provided no SINGLE ZONE exceeds 25 amplifier inputs, which would leave 125
amplifier inputs for the remaining 11 zones.
P81982 K
Sheet 13 of 21
MOUNTING INSTRUCTIONS:
The ZC-312 is designed for indoor surface wall mounting near the telephone system. Remove the ZC-312 cover from the base (containing the PC Board
assembly) by removing the screw on each side of the unit. Two keyholes and two circular holes are provided in the base for easy installation. A