273 Branchport Avenue
Long Branch, N.J. 07740
(732) 222-6880
INSTALLATION INSTRUCTIONS
MODEL TPA-60-B/TPA-100-B
PAGING AMPLIFIERS
GENERAL APPLICATION INFORMATION:
Wheelock models TPA-60-B and TPA-100-B Paging Amplifiers are output rated at 60 watts RMS and 100 watts RMS
respectively.
These amplifiers afford a choice of five different inputs: two low impedance microphone inputs, one telephone paging
input, and two high impedance auxiliary inputs. Three input channels allow three of these inputs to be used actively at
one time: one microphone input, a choice of a telephone paging input or a second microphone input, and a choice of
either one of two auxiliary inputs. Note that the auxiliary input (i.e., background music, tone generator, etc) will
automatically be soft muted whenever a telephone page is generated or a microphone is used. After completion of the
page, the music will rapidly return to its original level.
A built-in limiter circuit (ALC) compensates for the varying voice levels and paging styles of the people who have access
to telephone paging or a microphone. The limiter maintains rated output without distortion.
The amplifiers feature individual input volume controls, as well as a master volume control, individual treble and bass
controls, a low-cut horn protect switch, two input selector switches, an illuminated power on switch, an internal ALC
(limiter) ON-OFF switch, an internal mute ON-OFF switch, a peak level indicator, and a line output jack.
Both models operate from 120 volts, 60Hz and have a power consumption of 180 watts (TPA-60-B) and 240 watts (TPA-
100-B). The units have a circuit breaker on the AC line input as well as a thermal breaker for overload protection on the
output. The AC circuit breaker is manually resettable. IN THE EVENT THE CIRCUIT BREAKER DOES NOT RESET,
HAVE THE TROUBLE INVESTIGATED BY AN AUTHORIZED SERVICE TECHNICIAN OR RETURN UNIT TO THE
FACTORY.
WARNING:
TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK,
DO NOT EXPOSE THIS UNIT TO RAIN OR MOISTURE.
UNPACKING:
The amplifier was carefully checked before leaving the factory. Inspect shipping container and unit carefully for indication
of improper handling. If the unit has been damaged, make an immediate claim to the carrier.
MOUNTING INSTRUCTIONS:
The amplifier is provided with a set of universal mounting brackets to facilitate either rack or surface wall mounting.
Remove the 8 screws (4 on either side) holding the cover to the chassis. Choose the mounting required (rack or surface
wall), and insert screws through the universal mounting bracket and back into the cover/chassis holes as shown in
Figures 1 and 2.
CAUTION:
THESE DEVICES ARE NOT INTENDED FOR USE IN HAZARDOUS LOCATIONS AS
DEFINED BY THE NATIONAL ELECTRICAL CODE (NEC) AND BY THE NATIONAL FIRE
PROTECTION ASSOCIATION (NFPA).
P82423 C
Sheet 1 of 10
RACK MOUNTING
