Aiphone PG-60A - Manual (Page 3)

AMPLIFIER OUTPUT CONNECTIONS
Pull out the output plug and remove the cap. Insert
speaker line, thru the cap, one into common pin indicated
COM and the other into either 25V or 70.7V pin. Attach
the conductors to the pins with low heat soldering. Replace
the cap and insert the output plug into recepticle.
SPEAKER REQUIREMENTS
OUTPUT
COM D D
70V
©
-CONDUCTORS MUST BE ATTACHED
TO PINS WITH SOLDERING
- OUTPUT PLUG
IMPORTANT
- CAP
-2-CONDUCTORS (SPEAKER LINE)
1 It is imperative that the total power consumed for speakers MUST NOT EXCEED the output power of amplifier
i.e. maximum 10 watts for PG-lOA, 30 watts for PG-30A and 60 watts for PG-60A. Greater output than 60 watts
may be obtained by multiple installation of amplifiers. Refer to drawing below.
2 It is NOT REQUIRED to have a dummy load when the power consumed for speakers is less than the output power
of amplifier.
3 A low impedance speaker such as 8 ohm horn must be installed using a matching transformer.
4 The total impedance of all speakers, matching transformers, and length of speakers run must be equal or more
than the output impedance of the amplifier. Refer to chart below. After computing the resistance of your
speaker, transformers, and speaker line, add a resistor in series to speaker line to increase impedance to match chart.
MULTPLE INSTALLATION
PAGING
ADAPTOR
OUTPUT IMPEDANCE
25 volt line 70.7 volt line
PG-lOA 62.5 ohms 500 ohms
PG-30A 21 ohms ; 167 ohms
PG-60A 10.5 ohms \ 83 ohms
* Output of each amplifier (speaker line) MUST BE SEPARATE.
INSTALLATION EXAMPLE
1) This example illustrates connection of TB-H system with single zone paging without talkback.
2) In this example button #6 on each phone operates paging.
NOTE: Each paging adaptor requires different wiring.
Please refer to the instruction sheet packed with the adaptor you are going to install.