Talkback
Amplifier
Model TBA15
•
1
5-watt amplifier
• Hands-free 2-way conversations through the
paging system
• 600-ohm transformer-coupled telephone line
input
• 25V or 70V balanced line outputs
• Adjustable sensitivity control for switching from
listen to talk
• Adjustable switch-back delay prevents
chopping of pages and provides smooth 2-way
conversations
• Talkback and page volume controls
• Talkback frequency shaped for maximum
intelligibility and background noise rejection
• Power ON LED
• Mute input forces amplifier to go into page mode
• Control of speech direction is maintained at the
telephone handset
• Electronic switching, no relays
• Resettable circuit breaker with thermal
protection
• Operates from a
1
20V AC, 60 Hz source
• Finished in black enamel
• Wall or
1
9" rack mount
• FCC Part 68 approved
Specifications subject to change without notice.
© 2003 Bogen Communications, Inc.
Part No. 54-780
1
-02B Printed in U.S.A. 03
1
2
The TBA
1
5 amplifier allows a paging system to be used for hands-free, two-way conversation between a
telephone system and remote speakers.The TBA
1
5 uses the system’s speakers as microphones and feeds this
signal out to a telephone line.When the TBA
1
5 senses an audio signal on the telephone line, it automatical-
ly switches its
1
5W amplifier on and uses the speakers in the system conventionally. Control of speech
direction is maintained at the telephone handset.
Features
Description
