Operating instructions

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REAR PANEL
CONNECTOR / LINE CORD - The PPA-300 is equipped with a grounding type lEG supply cord to reduce the
possibility of shock hazard. Be sure to connect it to a grounded AC receptacle.
DO NOT ALTER THE AC PLUG.
The power main (AC) fuse and fuse holder are under the IEC (power cord) socket. Replacement fuses
must be of the same rating (6A 250V) and size as originally equipped. To replace a blown fuse, remove
the lEG power cord, pull out the fuse holder and find the spare fuse inside.
REAR STORAGE COMPARTMENT
A small storage compartment can be found on the rear of the PPA-300 tower. To access this compartment, simply
lift the latch and pull open the storage door. This compartment is ideal for storing cables, microphones or other items
when you are transporting your PPA-300.
SET-UP AND CONNECTIONS
Before turning on the Power, please read and heed the safety warnings on page 2. It is wise to establish a routine
for connecting and powering up your sound system. Provided you have a properly grounded AC outlet or outlet
strip with sufficient power handling capacity, plug all sound system equipment into the same outlet or strip. This
will enhance system safety and performance. Take care that the AC circuit is capable of handling the peak power
demands of your system. Consult a qualified electrician if in doubt.
When setting up be sure to follow these simple set-up guidelines:
1 .
First, turn all channel Level, and EFF / AUX controls to their full counterclockwise (OFF) positions.
Next, place all EQ sticks in the middle position (0” position), all Pan and Master controls at 12
o’clock in their center notched positions. Be sure to set the appropriate input (mic/line switch
position) for the source you are setting up.
2.
Next, connect each speaker cable to the appropriate left & right speaker outputs on the rear tower
and on each speaker front panel with the enclosed cables.
3.
Connect all sources such as microphones, tape decks, keyboards etc., into the appropriate inputs.
4.
Finally, check the local voltage and set the voltage selector switch located adjacent to the power
input socket on the rear of the mixer amplifier to the appropriate operating range (See Safety
Precautions on page 2). Plug the power cable into the IEC (powercord) socket and to a properly
grounded 3 wire AC power outlet.
POWERING UP
Turn the Power Switch to the ON position. The Power LED will illuminate green and the system will turn on. If other
powered equipment is to be attached to the system, it is always advisable to turn on your PPA-300 last. This way
any transient spikes and thumps caused by other equipment will not be amplified and sent to your system speakers.
For the same reasons it is advisable to turn off your PPA-300 system first before turning off the attached equipment.
Should the Power LED not illuminate when the rear panel power switch is operated, check your power connections
and retry. Should the Power LED still fail to illuminate after you have confirmed the power connections, disconnect
all cables and check the PPA-300 fuses. Be sure to replace any blown fuses with fuses of the correct value.
Reconnect the power and speaker cables and turn the rear panel power switch on.
Re-set the system by turning on the power switch. If the power LED illuminates red, the system is indicating a
thermal protect mode or cooling problem .Be sure to check the air inlet filter at the base of the unit by removing it
and making sure it is clear of debris. Turn power off and wait for a few minutes allowing heat to dissipate and the
PPA-300 to reset itself. If after doing so the Power LED continues to glow red this indicates a fault with your system
and you should consult an authorized AVTRONICS service center.
If no audio is present in one of the speakers, check to see if your control settings are correct. Next, unplug the cable
from your working speaker and reconnect it to the other speaker. If the second speaker now works, this indicates
that the first cable is bad, and should be replaced.