All features & specifications subject to change without notice. 520-368 APR95
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Connecting the KDC 6 to Your 48VDC
(+24VDC) Power Supply:
1. Confirm that the MA 6S unit is off and unplugged.
2. The KDC 6 must be powered from a 48VDC power supply
with a center tap to allow +24VDC operation. Refer to the
following diagram using four automobile batteries. Two
12V batteries connected in series equal 24 volts. Note that
all wires used must be 10-12AWG. You should always use
fuses when utilizing automobile batteries. These batteries
are capable of supplying large amounts of current and can
explode if shorted.
3. The Euroblock connector that comes with the KDC 6 has
three setscrews used to lock the three DC input wires into
the correct location. To insert the wire into the correct hole,
you will need to turn each setscrew counterclockwise all
the way out. The screw does not have a stop; eventually
you will notice that more counterclockwise screw turning
does not continue to come out. Stop at that point, and insert
the correct wire from your power supply into the correct
hole on the KDC 6. The wire end should have the insula-
tion stripped back about ½". When using stranded wire, it
is recommended that you tin the stripped end with solder.
Now turning clockwise, snug the locking mechanism down
on the wire. Once snug, tug on the cable to insure proper
locking and move to the next wire.
a. Connect the wire from the +24VDC supply to the
+24VDC Input of the KDC 6.
b. Connect the wire from the -24VDC supply to the
24VDC Input of the KDC 6.
c. Connect the wire from the common of your supply to the
COM Input of the KDC 6.
4. Once all wires are connected to the KDC 6 and the unit is
connected to the 48VDC ( +24VDC) power supply, the fan
in the MA 6S will begin to turn and the POWER LED
lights. After a short period of time the output relays of the
MA 6S pick up. When a signal is applied with speakers
connected correctly, your signal appears over the loud-
speaker system, proving all is well.
