UPB-120 USB / UPB-240 USB
© Copyright LOTRONIC 2012
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10. ZONE LED
These led light’on when you select the corresponding zone
11. ZONE SELECT
The power amplifier have 5 zones outputs. You can seperate speaker by zone. With these button, you can choose in which zone you want
to send the sound. The ALL ZONE nutton is used to select all in same time
12. VUMETER
These LED display shows the level of what ever is present on general output. If the led 2 to 10 light, the operating and level are OK. If the
led 12 lights, that means the level is too high and the output is in distortion. So you must to decrease level of all input levels.
13. PROTECTION LED
This led light’s on when something is wrong on the power amplifier ( inside or outside like the speakers ). If this led ligh’s on, unplugged the
speakers. If led stay on, that means your power amplifier have a electronic problem. In this case, please contact your dealer or the BST
PRO technical service.
14. HEAT LED
If this led light’s on, that means you power amplifier is in overheat. Stop it and check if fan is not blocked or obstructed
15. USB LEVEL CONTROL
Use this button to adjust the level of USB input
16. LOOP BUTTON
This button is used to make a loop either one file, either all the files
17. NEXT BUTTON
This button is used to select the next MP3 file)
18. PLAY / PAUSE BUTTON
Each press of the button to change from play to pause or from pause to play
19. PREV BUTTON
This button is used to select the previous MP3 file
20. DISPLAY
The display shows : playback state ( play, pause, stop ), time, the current play track mp3 file and the total of files
21. POWER SUPPLY FUSE
Plug the AC power cord on this socket. Before plugging this cord in, be sure the voltage of AC outlet is correct. ( 220V )
The fuse is used to protect your power amplifier from different kinds of ac problems. If the power amplifier is “on” and nothing lights, please
verify the fuse compartment. If fuse is broken, please read it and change with a new one of same size and value.
22. SPEAKER OUTPUT
These output are used to connect low impedance speaker, 70V speaker or 100V speaker
23. EMC INPUT ( EMERGENCY )
Connect on these inputs emergency periphericals ( emergency message, emergency ringing,... ). This input have a priority function. It
decrease the volume of all inputs ( except mic 1 input ).
24. MUTE CONTROL
This control is used to adjust the level of decrease for priority function. This function operates on all input ( except mic 1 ).
On the min control, the function is disable.
Inputs recover their normal level if the user stops to talk on the mic 1 input more than 3s.
25. MIC 2 & 3 INPUTS ( MIC LEVEL )
Connect on these inputs the receiver of a wireless microphone ( MIC level ). The XLR socket have fantom power suplly.
Connector : Jack 6.35mm + XLR
26. MIC 2 & 3 INPUTS (LINE LEVEL )
Connect on these inputs the receiver of a wireless microphone ( line level ). As the level of this input is line, you can connect on this input
only items with line level ( cd player, tape player, minidisc, mixer,... ). You cannot connect turntable ( phono level ) or microphone ( mic
level )
27. AUX 1 & 2 INPUTS
The level of these inputs are line so you can connect on these inputs only items with line level ( cd player, tape player, minidisc, mixer,... ).
You cannot connect turntable ( phono level ) or microphone ( mic level )
28. LINE OUT
The signal of this output is the same of the main signal so you you can use this output to connect a secondary power amplifier.)
29. FAN
This fan is used to aircolled the power amplifier. Please dont blocked this fan.
30. MIC 2 AND 3 PHANTOM POWER BUTTON
Phantom power, in the context of professional audio equipment, is a method for transmitting DC electric power through microphone cables
to operate microphones that contain active electronic circuitry.It is best known as a convenient power source for condenser microphones,
though many active direct boxes also use it. If the mic connected on the mic 2 and 3 inputs are a condenser microphone, please push these
buttons to activate phantom power
Note: If the microphone connected on the mic input is a dynamic mic, disable phantom power or you will destruct the mic
31. MIC 2 AND 3 GAIN CONTROL ( XLR )
These rotary potentiometers is used to adjust the gain of mic 2 and 3 XLR inputs
Note : don’t adjust the gain to high or the sound must be saturated
32. SPEAKERS ZONE OUTPUT
Connect 100V speakers on each zone.
