Beta Three BA1602 User manual

BA1602
RR
User Manual
ED-B3-MA-070612-001
MUSIC PUBLIC ADDRESS AMPLIFIER

DEAR CUSTOMERS:
CONTENTS
Please read this user manual carefully before useing this unit and follow the operation
method. Any questions, please ask for the local distributor.
P3
P3
P4
P5
P5
P6
P7
P10
P10
2
3
4
5
6
7
8
9
10
Attentions
Functions&features
Parameters
Front panel
Back panel
Installation diagram
Protection function
Indicators on front panel
Operations
11
1
P10
P11
Trouble and troubles hooting
Function setup and cable connection

1ATTENTIONS
3
2FUNCTIONS&FEATURES
Do not open the cover because exist dangerous voltage,please ask the professional to repair
Do not expose it to the raining or moisture
Do not put it under the direct sunshine,high temperature or heat source
Keep good ventilation,not stop the ventilating hole
Note the local voltage must matched with the voltage required
Please put off the plug if not use for a long time
Connect with right load, not work under overload for a long time
Do not let the obstacle into the unit, keep the unit away the obstacles
Please stop using if the cable is damaged
The equilateral triangle with lightning bolt warns the user of dangerous voltage levels
localized within the cabinet.
The equilateral triangle with exclamatory mark means the important operation on the
user manual.
Symbols:
Please make sure the local voltage and marked voltage on back panel same before
connection. Meanwhile please make sure socket&cable perfect. Pull out the plug
when turn off. Normal consumption power is 600VA.
BA1602 is a high performance dual channel rated voltage post-amplifier, suitable for
fire protection, meeting or multi area broadcast and etc, it is mainly used for high
quality background music replaying, language program or meeting system:
Functions and features as followings:
1> Balance input.
2> Dual channel rated voltage 100V,70V,50V, mono bridge rated voltage 200V,140V,100V.
3> Improved heatsink configuration and high quality cooling fan, make sure the long time
working under big power.
4> Loading impedance-temperature-power- working voltage inter control function, fan speed
is changed with the temperature inside, when the loading is too low or the temperature is
too high,the unit can adjust the voltage of power supply and lower the impedance of power
supply,to improve the sound quality and protect unit, enhance the reliability.
5> Output short circuit, overload, overheat protection function.
6> Low noise.
7> Small dimensions.

3
4
PARAMETERS
MODEL
(THD<1%)RMS
Frequency response +0/-3dB
Net weight
THD
Intermodulation distortion
Separation
S/N ratio
Input sensitivity
Input impedance
Input terminal
Output terminals
Cooling mathod
Control on front panel
Control on back panel
Indicators on front panel
Amplifier protection
Dimensions(W D H)
Power supply
Environment temperature
Environment humidity
BA1602
625W 2(dual channel /1250W(bridge)
50Hz-18kHz,<+/-3dB
<0.5% (normal working conditions
>60dB
>105dB(A weight)
1V
10k (unbalance input),20k (balance input)
four fans,stepless speed, airflow from front to back
AC switch,gain control
green signal,red overload,yellow bridge
short circuit,overload,overheat etc
483 375 88mm
22kg
AC 220V/230V,50/60Hz,600VA
work temperature:-10 ~40 ,store temperature:-25 ~80
<90%
<1% (f=60/7kHz,4:1,normal working conditions)
3pins XLR,6.35mm socket
binding post(dual channel:50V,70V,100V,bridge:100V,140V,200V)
dual channel/parallel/bridge choosing,LF filter,limit,grounding

4FRONT PANEL
5BACK PANEL
5
CHA
BRIDGE IN
PIN1:
SIGNAL GND
PIN2:
SIGNAL +
PIN3:
SIGNAL -
INPUT
CHB
BRIDGE
PARALLEL
STEREO
MODE LF FILTER GROUND
CLIPLIMITER
ON
OFF
200HZ
100HZ
ON
OFF
50HZ
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
!
POWER
CABLE
FUSE
BRIDGE
50V/4 70V/8 100V/16
50V/4 70V/8 100V/16
200V/32
140V/16
100V/8
CH A
OUT
CHB
OUT
COM
COM
BRIDGE BRIDGE
DUAL CHANNEL RATED
VOLTAGE PUBLIC
ADDRESS POST-AMPLIFIER
Serial no:
BA SERIESBA SERIES
RPRO DESIGN
BETA THREE BA1602
BRIDGE
PEAK
SIGNAL
00
-2-2
-4-4
-6-6
-8-8
-10-10
-12-12
-14-14
-16-16
-18-18
-20-20
-24-24
00
-2-2
-4-4
-6-6
-8-8
-10-10
-12-12
-14-14
-16-16
-18-18
-20-20
-24-24
CHBCHA
POWER
ON
3
42
56789
1234
5678910 11 12
7> Filter switch
8> Signal input socket of CH B(6.35 Mic socket)
9> Limit switch
10> Grounding switch
11> Signal output of CH B(binding post)
12> Power supply Cable
1> Ventilation hole
2> Overload indicator of CH A
3> Bridge connection indicator
4> Overload indicator of CH B
5> Power on/off
6> Gain adjust of CH A
7> Signal indicator of CH A
8> Signal indicator of CH B
9> Gain adjust of CH B
1> Signal input jack of CH A
2> Signal input jack of CH A(6.35 Mic socket)
3> Signal output of CH A(banding post)
4> Fuse case
5> Working mode switch
6> Signal input jack of CH B(XLR)

6
6
76.2mm
376mm
371mm
365.7mm
360.5mm
INSTALLATION DIAGRAM
482.4mm
465.0mm
ÆøÁ÷
·½ÏòÆøÁ÷
·½Ïò
ÆøÁ÷·½ÏòÆøÁ÷·½Ïò
376mm
355mm
433.0mm
87.9mm
ÆøÁ÷·½ÏòÆøÁ÷·½Ïò
AIRFLOW DIRECTION

7
7
FUNCTION SETUP AND CABLE CONNECTION
2
3
2
3
BRIDGE
PARALLEL
STEREO
MODE
BRIDGE
PARALLEL
STEREO
MODE
B: Mono parallel mode
Set the switch on parallel, like the diagram:
Balance input as the following:
Set the switch on stereo, as the diagram
Under the dual channel mode, the signal on two
channel is separate, the signal of CH A just
output CH A, signal of CH B just can
output CH B as the diagram
Under mono mode, the input of CH A and B is
same, The signal from CH A can provide to
output A, also can provide to output B, the
same as the signal from CH B. But please
not input the signal from A&B at the same time.
Mono parallel mode just mean input signal parallel, please not parallel the
output terminals. like the diagram:
NOTE:
1> Mode option and signal cable connections
Unbalance input as the following:
A: Dual channel mode
Signal
Grounding
Signal
Signal
Signal Grounding

8
7FUNCTION SETUP AND CABLE CONNECTION
BRIDGE
PARALLEL
STEREO
MODE
OFF
ON
CLIPLIMITER
OFF
ON
CLIPLIMITER
C: Bridge mono mode:
please set the option switch on bridge,
like the pictures:
Under bridge mono mode, signal just can input from
CH A, if input the signal from Channel B, there
will be no output. Anode of output CH A is the
anode of bridge output,the anode of output B is the
cathode of bridge output,like the attached pictures:
Under bridge mono mode, output voltage is very high, will cause the electric
shock, so please put off the unit before connection.
NOTE:
If the switch is at ON, the limit circuit is functional,
if the input signal is too big, the limit circuit will
control and adjust the gain and reduce the
distortion, the MAX. signal input is 26dB(15V).
D: Input ports
The XLR and 1/4" mic socket in the same channel are paralleled.
The signal can be input from any input ports, and output from the another port in same
channel for the extended connection.
The sound quality will reduced if the extended amplifiers are too much. Please not input
the signal from the two ports in same channel.
E: Output port
The binding post and NL4 socket in same channel are paralleled.
Please not connect the loading on the two ports of same channel at the same time.
The red end of binding post is connected with anode of speaker, black end of
binding post is connected with cathode of speaker.
Only the suitable loading can be connected to output port.
If set the switch at OFF like the picture, the limit
circuit is not functional, if the input signal is too
big, it will cause the clip distortion.
2> The setup of limit ON/OFF

9
200Hz
100Hz
50Hz
LF FILTER
200Hz
100Hz
50Hz
LF FILTER
200Hz
100Hz
50Hz
LF FILTER
dBxx
8
6
4
2
0
-2
-4
-6
-8
Ohm
35.0
30.0
20.0
20.0
15.0
10.0
5.0
0.0
10K 20KHz5K3K2K1K20 5003002001005030
dBxx
8
6
4
2
0
-2
-4
-6
-8
Ohm
35.0
30.0
20.0
20.0
15.0
10.0
5.0
0.0
10K 20KHz5K3K2K1K20 5003002001005030
dBxx
8
6
4
2
0
-2
-4
-6
-8
Ohm
35.0
30.0
20.0
20.0
15.0
10.0
5.0
0.0
10K 20KHz5K3K2K1K20 5003002001005030
7FUNCTION SETUP AND CABLE CONNECTION
When switch is at 50Hz, it is same as series connecting a 50Hz high pass filter on the input
circuit, will attenuate signal under 50Hz, like the pictures
3> The setup of LF filter
When the switch is at 200Hz, it is same as the series connecting a 200Hz high pass filter
on the input circuit, will attenuate signal under 200Hz, which make the sound more clear,
like the following diagram:
When switch is at 100Hz, it is same as series connecting a 100Hz high pass filter on the
input circuit, will attenuate signal under 100Hz, like the pictures

10
8
9
10
a> Turn the volume knob to Min.
b> Close the power supply switch.
c> Close the pre,effect, sound source equipment.
PROTECTION FUNCTION
BA1602 has the perfect protection function to avoid the damage of speaker and
amplifier caused by short circuit,overload and overheat.
1> Short circuit: When short circuit on output loading, the unit will turn off the output to
protect the unit.
2> Overload: When the ourput loading is too low, the unit will turn off the output to
protect the unit.
3> Overheat protection: If the temperature of heatsink is over the standard,the sensor will let the
protection circuit to close the output to avoid the damage for human and
unit, when the temperature of heatsink recovered, the unit will turn on
automatically.
INDICATORS ON THE FRONT PANEL
1> The flash of signal indicator indicate the existing of signal on two channels.
2> The flash of peak volume indicator indicate the input voltage level too high,
should reduce the volume
3> Bridge indicator lit up means that the unit is under the bridge mode.
OPERATION PROCEDURE
Please follow the below operation procedure:
1> Turn ON
a> Connect and setup the unit with correct method according to the above procedure.
b> Check if there is short circuit on the connection, or the loading is too low.
c> Check local voltage.
d> Make sure the power switch at "O", and turn the volume at Min.
e> Connect the power supply, open the sound source equipment, pre equipment and effect
equipment and make sure the above equipments woke smoothly.
f> Open the switch of power supply.
g> Turn the volume knob to proper position colockwise.
2> Turn OFF

IF THE ABOVE METHOD IS NOT FUNCTIONAL FOR YOUR UNIT,
PLEASE ASK FOR THE PROFESSIONAL AT THE REPAIR CENTER.
NO.
1
2
3
1
2
3
1
2
1
1
1
2
1
1
No sound, the power
supply light is
not lit up
No sound, the power
supply indicator is
lit up, output level
indicator is not lit up
Clip overload
indicator is lit up,
abnormal sound
Lf is not enough
No sound in one
channel under
parallel
The indicator is no
rmal, no sound
Fuse burning
Other trouble
TROUBLE AND TROUBESHOOTING
11
TROUBLE TROUBLE SHOOTING
Check the connection between plug and socket
Check if there is 220V/230V AC on the socket
Check the fuse
Check signal cable
Check the power supply of sound source equipment and
the volume control
Check the volume position
The sound source output is too high or not
Check the sensitivity switch position
Check the LF filter switch
The mode choosing is at parallel or not
Check the output and loading
Check local voltage
Check the connection
Ask for the professional service or
check the information on our website.
11

BA1602
RRUser Manual
MUSIC PUBLIC ADDRESS AMPLIFIER