GAI-Tronics 751-005 Speaker Amplifier (ATEX Zone 2/CE Mark) - Manual (Page 2)

Pub. 42004-366C
Model 751-005 Speaker Amplifier Page 2 of 3
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Adjustment
Model 751-005 Speaker Amplifier mates with an enclosure wired directly to a speaker. The speaker
volume adjustment is located under the GAI-Tronics nameplate on the front panel. Refer to Figure 1.
Use a small flat-blade screwdriver to adjust the speaker sound volume.
Maintenance
Fuses
WARNING
Do not remove fuses when energized. Replace with the same type and size fuse.
F2 = T.630A, 250V, 5 20 mm, IEC 60127-2.
Troubleshooting
The table below lists some hints to aid technicians in troubleshooting:
Problem Solution
Feedback/distortion (a hum or
buzz on the line) occurs during
all Page/Party
® station operation.
The line may be improperly terminated. Inspect the system cable
for loose connections, shorts, and grounds. Line balance assembly
connections are critical.
Associated speaker level requires
adjustment. Adjust the speaker volume control located on the amplifier front
panel, behind the nameplate. Refer to Figure 1. Use a small
standard screwdriver to perform these adjustments.
Figure 1. Model 751-005 Speaker Amplifier Outline Diagram