Pub. 42004-730D
ICS Page/Party
®
AC Plug-in Amplifiers
Page 8 of 21
P:\Standard IOMs - Current Release\42004 Instr. Manuals\42004-730D.docx
01/22
Speaker Configuration and Adjustment
GAI-Tronics recommends using a No. 10440-002 Maintenance Cable (
purchased separately
) to perform
the following adjustments (see Figure 10 for locations).
Speaker Volume
The speaker volume potentiometer,
R91
, adjusts the signal level to the speaker from the page line.
•
There is no need to open the amplifier to make this adjustment.
•
The adjustment is accessible through a small hole in the bottom of the amplifier.
•
The default setting is 4 watts for an 8-ohm speaker and 2 watts for a 16-ohm speaker.
WARNING
—Maximum output power may exceed rated speaker wattage resulting in speaker
damage.
Speaker Mute
The amplifier can mute its connected speaker during page operation to eliminate feedback. To mute the
connected speaker:
1.
Remove the amplifier from the enclosure and place it on a stable surface.
2.
Open the amplifier (see the Open and Close the Amplifier section).
•
Jumper
P11,
in the
EN
position (
default
), on the main PCBA, mutes the speaker during page
activation.
•
Jumper
P11,
in the
DIS
position, broadcasts to the speaker during paging.
Speaker Gain
Jumper
P9,
on the main PCBA, limits the maximum speaker output level. To change the speaker gain:
1.
Remove the amplifier from the enclosure and place it on a stable surface.
2.
Open the amplifier (see the Open and Close the Amplifier section).
•
Jumper
P9,
in the
30W
position (
default
), represents a 30-watt maximum output.
•
Jumper
P9,
in the
2W
position, represents a 2-watt maximum output.
WARNING
—Maximum output power may exceed rated speaker wattage resulting in speaker
damage.
Handset Levels (Models 701-302ICSVC & 701-304ICSVC Only)
GAI-Tronics recommends using a No. 10440-002 Maintenance Cable (
purchased separately
) to perform
the following adjustments (see Figure 10 for component locations).
Transmit Level
To adjust the signal level from the handset to the page or party lines:
1.
Remove the amplifier from the enclosure and place it on a stable surface.
2.
Open the amplifier (see the Open and Close the Amplifier section).
3.
Adjust the
LINE
ADJ
potentiometer,
R34
, on the main PCBA, to change the transmit level.