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APPLICATION
APPLICATION
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Model CPA-7B
the amplifier is referred to as the step-up transformer; the transformer
at the speaker is referred to as the step down transformer.
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A. Step Up Transformer
1. Connecting the Audio Output
At the amplifier, connect the 8 OHM AUDIO OUTPUT to the 8 OHM
and COM taps of the step-up transformer's secondary coil as shown.
See chart below for pin selections.
Model
Pins
CPA-7B
1 & 2
M15W
1 & 4
PA-2A
2 & 3
2. Selecting the Coil Tap
Select the step-up tranformer's primary coil tap, which closest
matches the amplifier's rated wattage output and connect
these taps to the beginning of the long wire run (see the chart
to the right).
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Minimize the Loss of Audio in
Long Speaker Runs
It is possible to install long speaker runs
with the CPA-7B, M15W and PA-2A.
To minimize the loss of audio power in long
speaker runs, a transformer is required at
both the amplifier end and at the speaker
end of a long wire run. A minimum of two
transformers are always required (Radio
Shack part # 32-1031). The transformer at
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Radio Shack Part # 32-1031
(or equivalent)
Long Wire Run
Step-Down
Step-Up
Transformer
Transformer
Long Speaker Runs
with the CPA-7B,
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M15W and PA-2A
September 20, 2002
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Model M15W
VIKING
MODEL PA-2A
©
PAGING
VOLUME
VIKING
ELECTRONICS
HUDSON, WI 54016
MIN
MAX
PAGING - LOUD RINGING
AMPLIFIER SYSTEM
1 2 3 4
TALK BATTERY
ALERT TONE
WARBLE / CHIME
RINGING LINES
1 - 3
4 - 6
1 2 3 4
8 OHM
COM
Model
Wattage
CPA-7B
6
M15W
15
PA-2A
2
Model PA-2A
RINGING
VOLUME
MIN
MAX
5 6
7 8
9 10
POWER
JP1
Tap
5
10
2.5
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Related Manuals for Viking CPA-7B
Summary of Contents for Viking CPA-7B
- Page 1 Minimize the Loss of Audio in Long Speaker Runs It is possible to install long speaker runs with the CPA-7B, M15W and PA-2A. To minimize the loss of audio power in long speaker runs, a transformer is required at both the amplifier end and at the speaker end of a long wire run.
- Page 2 Due to the dynamic nature of the product design, the information contained in this document is subject to change without notice. Viking Electronics, and its affiliates and/or subsidiaries assume no responsibility for errors and omissions contained in this information. Revisions of this document or new editions of it may be issued to incorporate such changes.