GAI-Tronics 751-001 Page/Party Speaker Amplifier - Manual (Page 2)

Pub. 42004-210B
751-001 Page/Party
®
Speaker Amplifier Page: 2 of 3
f:\standard ioms - current release\42004 instr. manuals\42004-210b.doc
04/09
Adjustment
The 751-001 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
The following table lists some hints to aid technicians in troubleshooting:
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.
Specifications
Power input ..................................................................... 90–140 V ac range, 50/60 Hz, 120 V ac nominal
Power consumed.............................................................................................Zero signal: 10.5 VA, 5.3 W
Maximum signal: 58 VA, 29.5 W
Construction/Finish.................................................................16-gauge cold-rolled steel/gray polyurethane
Amplifier output ................................. Push-pull, Class B, 12 watts minimum, with nominal supply voltage
Amplifier sensitivity............................................................................................ 0.5 V ac, for rated output
Frequency response..................................................................... 250–4,000 Hz, +0/-3 dB ref. to 1,000 Hz
Distortion ......................................................................................... 1% max. THD @ 1,000 Hz, 12 watts
Input impedance........................................................................................................ 50,000 ohms nominal
Controls........................................................................... Speaker volume (adjusted through an access hole
behind the nameplate on the front panel)
Temperature range............................................................................ -22° F to +158° F (-30° C to +70º C)
Dimensions................................................................8.1 H
× 8.1 W × 3.0 D inches; (206 × 206 × 76 mm)
Packaged weight ................................................................................................................4.8 lbs. (2.2 kg)
Net weight .........................................................................................................................3.9 lbs. (1.8 kg)