Wheelock PAMX-125 Installation Instructions Manual

273 Branchport Avenue
Long Branch, N.J. 07740
(732) 222-6880
GENERAL:
The PAMX-125 combines an eight channel mixer with a 125 Watt RMS amplifier in a single unit. The PAMX-125 amplifier offers a choice of ten different
inputs: five low impedance microphone inputs, one telephone paging input, three high impedance auxiliary inputs and one PATCH IN input. The
PAMX-125 allows eight of these inputs to be used simultaneously: four microphone inputs, a choice of a telephone paging input or a fifth microphone
input, and three auxiliary inputs.
The front panel of the amplifier features individual input level controls; as well as, MASTER gain and TREBLE / BASS controls, LO CUT horn protect
switch, LIMITER (ALC) ON/OFF switch, power ON indicator, INPUT PEAK indicator for the eight input channels and an OUTPUT PEAK indicator.
A built-in LIMITER circuit compensates for the varying voice levels and paging styles of the people who have access to telephone paging or a
microphone input. The LIMITER maintains rated output without distortion when input level exceeds rated input by as much a 20dB. The LIMITER circuit
affects only the MIC and TEL inputs.
Note that (AUX 1) auxiliary input (i.e., background music, tone generator, etc.) will automatically be soft muted whenever a telephone page or a
microphone page is generated. After completion of the page, the music will return to its original level.
On the rear panel there is a power ON/OFF switch with a switched auxiliary AC receptacle, as well as a MIC 5/TEL select switch and a PRE/POST EQ
select switch for the LINE OUT (See Figure 7). All inputs and outputs are connected at rear panel. Screw terminals are used for the Microphone and
Telephone Inputs. Phono jacks are used for Auxiliary Inputs, LINE OUT, TAPE OUT, PATCH OUT and PATCH IN. The audio power output is
connected via screw terminals (See Figure 8).
The amplifier operates from 115VAC, 60Hz and has a power consumption of 175 Watts. There is no external fuse or circuit breaker. IN THE EVENT
THE AMPLIFIER DOES NOT POWER UP, HAVE THE TROUBLE INVESTIGATED BY AN AUTHORIZED SERVICE TECHNICIAN OR RETURN UNIT
TO FACTORY.
NOTE: READ THESE INSTRUCTIONS CAREFULLY. FAILURE TO COMPLY WITH ANY OF THE FOLLOWING INSTRUCTIONS, CAUTIONS AND
WARNINGS COULD RESULT IN RISK OF ELECTRICAL SHOCK, IMPROPER APPLICATION OR INSTALLATION.
NOTE: All CAUTIONS and WARNINGS are identified by the symbol
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS UNIT TO RAIN OR MOISTURE.
1. 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.
2. MOUNTING INSTRUCTIONS:
The mixer is provided with five mounting feet for placement on a shelf. An optional Rack Mount Kit (PA-RMK) is available for mounting in standard
EIA 19" racks. Refer to PA-RMK installation instructions (P83258) for mounting.
CAUTION: These devices are not intended for use in hazardous locations as defined by the National Electrical Code (NEC).
3. POWER AND GROUNDING (SEE FIGURE 1):
The 115VAC 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.
Copyright 1996 Wheelock, Inc. All rights reserved.
4. POWER SWITCH AND RECEPTACLE (SEE FIGURE 1):
The ON/OFF power switch located on the rear panel controls both the internal power of the amplifier and the accessory IEC female outlet.
Note: The accessory to be attached and controlled by the ON/OFF switch must not exceed 3 Amps at 115VAC.
INSTALLATION INSTRUCTIONS
MODEL PAMX-125
PAGING AMPLIFIER
. All warnings are printed in bold capital letters.
P83242 C
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