GAI-Tronics 701-302VC Volume Level Control (VLC) Receiver Assembly Instruction Sheet - Manual (Page 2)

Pub. 42004-360B
Volume Level Control Receiver Assembly Instruction Sheet Page 2 of 4
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N OTES :
1. W3 has been removed from the amplifier PCB during the installation of the VLC PCBA.
2. Speaker adjustment for normal operation remains under the nameplate on the front panel and does not
change with the addition of the VLC. The speaker adjustment for the VLC is factory set and can be
varied by adjusting the level potentiometer on the VLC assembly.
3. When an alarm is broadcast and is accompanied by a VLC (50 kHz) signal, it triggers the volume on
the Page/Party
®
VLC amplifier to change level depending on its volume level setting. GAI-Tronics
Model 800 and 1200 Series cone speaker assemblies are normally used for indoor applications with
low ambient noise, such as offices, corridors, and control rooms. These speakers have a manual,
wall-mounted remote volume level control.
4. When these speakers are powered by a Page/Party ® VLC amplifier, and the volume level is manually
turned down using the wall-mounted remote volume level control, the signal that increases the
volume on the VLC amplifier will not bypass the manual setting. These speakers remain “turned
down,” regardless of the output signal of the amplifier, and the alarm broadcast level does NOT
increase on the cone speaker assemblies.
5. The Model 800 and 1200 Series speakers can be used in emergency notification systems; however,
we suggest that the customer NOT install the wall-mounted remote volume level control for this type
of application.
6. DO NOT READJUST the frequency potentiometer on the VLC assembly.
Figure 1. VLC assembly used in 24 V dc amplifiers