BATTERY OPERATION
7
PRECAUTIONS
6
Caring For Built-in Batteries
It is very important that you fully charge the batteries in your system
before first use and as soon as possible after each and every use,
even if operated only briefly to preserve battery life.
When The Battery LED Flashes or Won’t Light
The Battery LED will begin to flash
when the battery charge is low. To
prevent damage, the automatic
protection circuit turns the unit off
when the batteries approach their critical
discharge point.
Charging The Batteries - AC Power Source
The following steps outline the necessary procedure to charge the
batteries:
1. With the MegaVox Pro power switch off, plug the Charger
into an AC outlet.
2. Connect the Charger cord into
charger input. The Charger LED
will light, indicating the batteries
are being charged.
3. When the batteries are fully charged (about 6-8 hours), the
Charger LED will flash.
Expected Service Time From Batteries
Battery service time will vary depending on the volume level, tone
control settings, type of program usage and if a companion speaker
is used with the system. You can expect about 8-12 hours of
operation at medium volume, 3-6 hours at full volume of continuous
music input (usually longer for speech applications).
NOTE:
When an
external
speaker is
powered by
the MegaVox
Pro, battery
service per
charge will
decrease
considerably.
NOTE:
MegaVox Pro
is an AC/DC
powered unit
that can be
used while
charging.
IMPORTANT:
For longer
battery life,
always store
your system
with the
battery in a
fully charged
condition or
the charger
plugged in.
Feedback
Feedback is a howling or shrill sound that is self-generated by the
sound system. It is caused by microphone pickup of the sound
emanating from the speaker and then being re-amplified. Once
generated, this can be a self-sustaining phenomenon.
Causes of Feedback
•
Microphone too close, pointing towards or in front of
speaker.
•
Volume setting too loud for room.
•
Sound reflections from hard surfaces, walls, etc.
Avoiding & Eliminating Feedback
•
Point the microphone into a different direction.
•
Keep the microphone away from the speaker; position the
speaker in FRONT of the microphone.
•
Reduce the volume of the sound system. Have all volume
controls set to minimum prior to powering on the sound
system.
•
Place sound dampening material over hard surfaces; curtains
or sound dampening foam.
CAUTION:
Feedback can
be damaging
to both your
equipment
and a persons
hearing.
Unacceptable
Microphone is in front of sound system.
Acceptable
Microphone is located behind sound system.
