Operating Manual
WIRELESS AMPLIFIER
Power Usage Instruction:
A. General Summary
1. A built-in switching power supply allows for AC power inputs ranging from 90 ~ 260volt and an
external 24~32volt DC power supply, if required.
2. A built-in AC power supply powers the unit itself and provides recharging to the built-in lead-acid
rechargeable batteries, too.
3. The built-in lead-acid batteries provide enough power to be operated alone without plug into an
AC power supply.
B How to use AC power input.
1. After putting the power plug into the AC input socket of the device, the 4 battery meter indicators
will be shining immediately, no matter the power switch is on or off. This means the built-in
switching power supply is working normally and the built-in rechargeable batteries are full of power.
If the battery meter indicators are sparking, meaning the built-in switching power supply is working
normally and the built-in rechargeable batteries are under charging status. After a couple of
minutes, the battery meter indicators will stop sparking and continue shining, meaning the
batteries are full of power now.
2. AC power provides power to both the unit itself and the built-in lead-acid rechargeable batteries.
3. When using the AC power, you can remove or plug the power cord freely, no need to turn off the
power switch first. When a power cut is happened during usage, the device will activate the DC
power automatically to maintain continuous operation.
C How to use DC power input.
1. Two built-in series connection lead-acid batteries with model models WP 4.5-12 are used. When
the batteries are fully charged, the unit can operated continuously for approximate 7~8 hours in
standby mode (CD player and two receivers are turned on); 6~7 hours for audio and 5~6 hours
for music. (The above figures are references for fresh, new batteries only)
2. The built-in rechargeable batteries can be recharged when the unit is plugged into an AC or DC
power outlet.
3. In the case of no AC power connection, if the power switch is not turned on, the battery meter
indicators will not be shining. When the power switch is turned on, the red LED on it will be
shining; meanwhile, if 2 to 4 battery meter indicators are shining, it means the battery power is
enough for normal operation. The number of the shining indicators is in direct proportion of the
battery power. If only 1 battery meter indicator is shining or the red LED on the power switch is
sparking, it means the battery power is insufficient and immediate charge is necessary. If no
battery meter indicators are shining after the power switch is turned on, it means the batteries are
over discharged or broken.
4. Always store MA-808 system with the batteries fully charged if needing to store the system for
more than 3 months. Leave the system plugged into an AC power outlet when not in use.
The rechargeable batteries will not function properly if not recharged for an extended period of
time. It is therefore, recommended to recharge after every use regardless of the usage time to
preserve battery life.
5. Fully discharged (completely drained) lead-acid rechargeable battery can be possibly "rescued" by
the following method (Please proceed with extreme caution). Charging with DC power supply at
18V/2A for at least 30 minutes and ascertain battery surface temperature do not exceed 50 .
Then unplug and insert the charged batteries into the unit and power on. If more than one battery
LED indicators is lit, that means the batteries can be charged normally by connecting into an AC
power outlet. On the contrary, if zero (0) battery LED indicator is lit, that means the batteries can't
be "rescued" and therefore, a new, fresh replacement battery is needed.
A connector is included which allows users to make DC wiring.
See diagram below for illustration:
1
4
3
2
DC V
__
++
DC JACK Diagram
(Connector )
DC V: 24~32V/10A
PS. AC power and DC power can not be used at the same time.
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