isolated power source, such as Rauland's Model 6430 Pink-Noise Source and Model
6431 l/3-Octave Equalizer. Do not mix floating and grounded accessories.
POWER CONNECTION
Plug the power cord into a 120-V,
60-HZ, three-wire grounded outlet that
can provide at least 935 watts (DAX6O) or 1105 watts (DAX120). Although the
amplifier circuits by themselves consume no more than 175 watts (DAX60) or 345
watts (DAX120), connecting another device to the DC output could consume anoth-
er 40 watts of power, and a total load of 720 watts could be connected to the
three AC sockets. Check the local regulations before installing permanent AC
lines and plugging in the equipment.
Converting the Amplifiers to 240 VAC
If operation from a 240-VAC power source is desired, remove the front
cover and locate the "12OV/240V" switch inside the amplifier, on the right.
Use a small screwdriver to slide the switch to the "24OV" side. Resecure the
front cover. Replace the fuse with a fast-blow, 240-volt fuse with half the
current rating of the supplied fuse;
the new value would be 1.25 Amps for the
DAX60, 2.5 Amps for the DAX120 (see "REPLACING THE FUSE," below). Replace the
plug on the power cord with one approved for 240-VAC operation.
CAUTION: When the amplifier is connected to a 240-volt supply, its three
"120 VAC" convenience outlets will supply 240 volts. Accordingly, they
should not be used when the amplifier is connected to 240 volts.
SETTING THE "INPUT LEVEL" CONTROL
The input-level control, marked "LEVEL" on the rear chassis below the out-
put transformer (see Figure l),
can be adjusted with a ¼-inch flat-blade screw-
driver: turning the control clockwise will increase the output level. This
control should be set so that the maximum possible input signal will not cause
the output to clip. After this control has been adjusted by the installer, it
should be left alone.
REPLACING THE FUSE
A current surge during operation may cause the fuse to blow. To restore
power to the amplifier, first ascertain what the problem is and correct it
before replacing the fuse. Use a fast-blow fuse: 2.5 Amps for the DAX60,
5 Amps for the DAX120 (but only half of these values if the amplifier is oper-
ating from a 240-VAC line).
The fuse holder is on the rear of the amplifier, below the power trans-
former. You will need a Phillips screwdriver to remove the center plug; you
may find a scissors-nosed pliers helpful in removing the fuse. If the replace-
ment fuses continue to blow, unplug the amplifier and consult a qualified ser-
vice representative.
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