Talkaphone IW-HFM-4 Interview Window 4-Button Master - Manual (Page 9)

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Figure 7. Final Interface Box Wiring
10. Connecting Speakers/K-HP-50 to IW-IB-6 Interface Box
Before opening the box to perform steps 9 or 10, be sure to unplug the wall
transformer from its power source. If there are only one or two speakers in a zone,
those speakers may be connected directly to the output terminals on the Interface Box,
(terminals A+ and A- located on the Interface board) which has an output of 2 1/2
Watts.
If more than two speakers are to be used, connect a K-HP-50 Paging Booster (A & B
terminals) to the output terminals of the Interface Box (A+ & A-). Then connect all
speakers to the 5 Watt terminals on the K-HP-50. Make sure the K-HP-50 is plugged in
and the power is on.
11. Setting the Zone on IW-IB-6 Interface Box
The zone of each Interface Box is determined by the position of a jumper labeled JB1 on
the circuit board. To set the zone, take off the cover and unscrew the 4 screws holding
the chassis/circuit board in the box. Flip this over to see the 6 sets of pins on the bottom
right area of the board. A jumper connects one set of pins. Remove the jumper and
place it on the numbered pins that match the designated Zone number of the Interface
Box. At this point you should connect the power supply to the Interface Box (but do not
plug in until all connections are complete) as well as the music source (if used). When
this is complete, reassemble the Interface Box.
12. Setting Button 2 and 3 Zones on the IW-HFM-4 Master
The 2
nd and 3 rd buttons on the Master units can each be set to page any of the zones in
your system. Typically, button 2 will page the Master unit’s local zone while button 3
will page an adjacent zone. There is a small access opening on the back of the Master.
You will see two 6-position dip-switches labeled for switch two and for switch three.
Set the two switches to the appropriate zones.