wheelock TPA-60-B, TPA-100-B INSTALLATION INSTRUCTIONS

273 Branchport Avenue
Long Branch, N.J. 07740
[phone]

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 (TPA­100-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

FIGURE 1.

SURFACE WALL MOUNTING

For surface mounting, be sure to use hardware suitable for the mounting surface.

FIGURE 2.

POWER AND GROUNDING

:
The 120 VAC line cord has a three-prong plug which should be plugged into a three wire grounded electric outlet. It is
very important to maintain the amplifier ground for safe and trouble-free operation. If there is no grounded electric outlet,
connect a wire from the GND terminal on the OUTPUT terminal strip to a water or steam pipe.

P82423 C

Sheet 2 of 10

TECHNICAL SPECIFICATIONS

:

# PARAMETERS TPA-60-B TPA-100-B

1 POWER OUTPUT

@ 1 KHz

2 TOTAL HARMONIC

DISTORTION

3 OUTPUTS

4 LINE

OUTPUT

INPUTS

5 IMPEDANCE

6 SENSITIVITY

7 FREQ. RESPONSE

8 SIGNAL TO NOISE

RATIO

9 TYPE OF INPUT XFMR

10 CONTROLS TEL/MIC 1, MIC 2, AUX 1/AUX 2, INPUT LEVELS,

11 INDICATORS AMBER OR RED NEON - POWER ON RED LED -

12 PROTECTION AC LINE RESETTABLE CIRCUIT BREAKER AND

13a TREBLE CONTROL

13b BASS CONTROL

14 LO-CUT SWITCH -6 dB @ 250 Hz
15 AUTOMATIC LIMITER

FOR PAGING

16 AUTOMATIC MUTE

OPERATION

17 REGULATION

18 CONSUMPTION

19 SIZE 15"W X 11.25"D X 4.125"H

20 WEIGHT 15lbs. (6.75Kg) 18lbs. (8.1Kg)

TELEPHONE

600 ohm 600 ohm 47K ohms

-20 dBm 1 mV 220 mV

300Hz - 4KHz 70Hz - 15KHz 70Hz - 15KHz

ISOLATED/BAL

BASS, TREBLE, MASTER VOLUME, TEL/MIC 1 AND
AUX 1/AUX 2 SELECTOR SWITCHES, POWER ON/OFF
SWITCH, LO-CUT SWITCH, ALC (LIMITER) ON-OFF
SWITCH (INTERNAL), AUX MUTE ON-OFF SWITCH
(INTERNAL).

PEAK LEVEL

THERMAL OVERLOAD PROTECTION ON OUTPUT.

+/-3 dB OUTPUT LEVEL MAINTAINED WITHOUT
CLIPPING, EVEN WHILE EXCEEDING RATED INPUT
LEVEL UP TO 20 dB.
OUTPUT LEVEL 1 WATT FOR 40 dB MUTING

NO LOAD TO FULL LOAD OUTPUT LESS THAN 2 dB.

180 WATTS MAX. 280 WATTS MAX.

60 WATTS RMS

LESS THAN 2% THD

4 ohms, 8 ohms, 25V, 70V

150 ohm, 1.1VRMS

MIC 1/MIC 2

65dB 60dB 75dB

BALANCED
OR UNBAL.

-10.5 dB TO +10.5 dB @ 12 KHz

+10.5 dB TO -10.5 dB @ 100 Hz

(38.1 X 28.6 X 10.1cm)

100 WATTS RMS

AUX 1/AUX 2

UNBALANCED

P82423 C

Sheet 3 of 10

INPUT CONNECTIONS

(FIGURES 3 & 4)

TELEPHONE PAGING INPUT (FIGURE 3)

: Connect telephone wires to the input screw terminals marked TIP and RING.

Set TEL/MIC 1 Switch (on front panel) to TEL position. For Tip and Ring connections to various types of telephone