OBT OBT-7100 User manual

VOLTAGE POWER AMPLIFIER
VOLUME
POWER PROT -10dB -5dB 0dB +5dB +10dB
ON
OFF
OBT-7100
EnglishEnglish
P.A. AmplifiersP.A. Amplifiers
Reference Manual
VER 1.0
OBT-7100

Read the following content before using:
1. Check the packaging and accessories before using, if the accessories are not
complete,contact the distributor whom you buy the machine from.
2. Before turning on the power, you should carefully check the AC power of the region is
the same with the machine, carefully check the power cord and the connection socket ,
make sure they are without damage.
3. This series is a power amplifier, power consumption is very big, so the power supply
which provide power to the machine should have sufficient allowances (depending on
the number of machines), otherwise it may cause power lines burn out, even fire,
generally it should be 2-3 times of the total power
4. It is a power equipment so the machine fever is a normal situation. The built-in
thermal fan ensure system cooling normally.Speed of the fan is proportional to the heat ,
the more heat , the faster of the fan speed , but do not put any items blocked ventilation
channel of the fan and machine. If you put the machine in Cabinet or property cabinet
,there should be enough space for ventilation thermal.
5. In non-automatic systems, before opening the systems, turn on the power amplifier
first, and finally open the peripherals. Before closing the system , you should turn off the
power amplifier, and then close the other peripherals, so not to cause shock or damage
to the broadcasting system.
6. This power amplifier is with perfect and comprehensive protection system built-in.
Under un-normal conditions (such as short circuit, overload), the fuse may burn up.
Please check the wiring carefully ( particularly the load line) or reduce the load. If you
still cannot make it right, please cut off the power , and contact your dealer or
manufacturer.
7. The amplifier cannot be placed in strong sunshine, vibration, dust, damp
environments, that might cause the amplifier fails, electric shocks and fires.8. When
cleaning, you cannot use alcohol, gasoline, volatile solvent such as acetone, gently use
a soft cloth to wipe dust, do not let water or other liquids spill into the machine, this may
leave the amplifier have a serious failure, electric shock and fire.
9. In the handling process, do not thrown off the machine roughly, do not force excessive
on the machine's hands, and parts of the links, this may cause damage.
INSTRUCTIONS BEFORE USE PUBLIC ADDRESS SYSTEM AMPLIFIER
OBT-7100
1

Table for Pa Wire Cross Section And The Distance
Rated power
Cross
Section
Length
Within
100 meters
Within
250 meters
Within
500 meters
Within
1000 meters
Within
100 meters
Within
250 meters
Within
500 meters
Within
1000 meters
69123
½Ó¿Ú
½Ó¿Ú
OBT-7100
2

Standard rackmount design(3U),brushed black aluminum panel,humanized
handle,take use of advanced polishing technology,filling the high-end
temperament.
Panel with volume control knob.
Short circuit,overheat,overload protection function automatically detected,the
indicator warning buzzer alarm.
Output 100V,70V,4-16 ,connect 1 signals.
Output Power:1000W,1500W,2000W optional.
PARTS INSTRUCTIONS PUBLIC ADDRESS SYSTEM AMPLIFIER
OBT-7100
3
Power On/Off Switch AC Power Input Signal Input/Output
Signal Input/Output
Input Volume Level GNG/COM Interface
Power On/Off Output Interface Signal Input/Output
Signal Input/Output
Protection Indicator
Output level Signal Indicator Power Output Interface
Power Output Interface
VOLTAGE POWER AMPLIFIER
VOLUME
POWER PROT -10dB -5dB 0dB +5dB +10dB
ON
OFF
OBT-7100
1123
45
78910
6
11
12
13
14

AUDIO CONNECTING PUBLIC ADDRESS SYSTEM AMPLIFIER
OBT-7100
5
DVD
Cassette recorder
Pragram Mp3 Player
TUNER
PRO-AMPLIFIER
POWER AMPLIFIER
POWER AMPLIFIER

SPEAKERS CONNECTING PUBLIC ADDRESS SYSTEM AMPLIFIER
OBT-7100
6
Connect 70V speakerConnect 70V speaker Connect 16 speakerÙConnect 16 Ù speaker
Connect 100V speakerConnect 100V speaker
oror
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++
--
++
--
++
oror
oror ------
++++++++++++
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PARAMETERS PUBLIC ADDRESS SYSTEM AMPLIFIER
OBT-7100
7
Input resistance
Input voltage
Output voltage
Output
resistance
Output Power
Frequency
response
S/N Ratio
Nonlinear
distortion
Power supply