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T-B120
MIXER AMPLIFIER
IR
MIC1 INPUT
Please follow the instructions in this manual to obtain the optimum results from this unit.
We also recommend that you keep this manual handy for future reference.
PUBLIC ADDRESS SYSTEM
MIC 1
AUX 1
0
10
0
BASS
TREBLE
USB
TF
-10
+10
-10
SFB240
Power amplifier
AUX 2
PROT
OL
POWER
100V
CLIP
70V
SIG
10
0
10
MASTER
ON
OFF
+10
0
10
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Summary of Contents for ITC SFB240
- Page 1 PUBLIC ADDRESS SYSTEM SFB240 Power amplifier T-B120 MIXER AMPLIFIER MIC 1 AUX 1 AUX 2 PROT POWER 100V CLIP BASS TREBLE MASTER MIC1 INPUT Please follow the instructions in this manual to obtain the optimum results from this unit. We also recommend that you keep this manual handy for future reference.
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Page 2: Table Of Contents
TABLE OF CONTENTS 1. SAFETY PRECAUTIONS ..................3 2. GENERAL DESCRIPTION ..................5 3. FEATURES .......................5 4. NOMENCLATURE AND FUNCTIONS 4.1 Front Panel ......................6 emote control......................6 4.3 Rear Panel....................... 7 5. OPERATION ILLUSTRATION ................8 6. TROUBLESHOOTING ....................11 7. APPLICATIONS ..................... 12 8.BLOCK DIAGRAM ....................13 9.SPECIFICATIONS... -
Page 3: Safety Precautions
1. SAFETY PRECAUTIONS Be sure to read the instructions in this section carefully before use. Make sure to observe the instructions in this manual as the conventions of safety symbols and messages regarded as very important precautions are included. We also recommend you keep this instruction manual handy for future reference. Safety Symbol and Message Conventions Safety symbols and messages described below are used in this manual to prevent bodily injury and property damage which could result from mishandling. - Page 4 SAFETY PRECAUTIONS When the Unit is in Use When Installing the Unit Do not place heavy objects on the unit as this may Never plug in nor remove the power supply plug cause it to fall or break which may result in with wet hands, as doing so may cause electric personal injury and/or...
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Page 5: General Description
2. GENERAL DESCRIPTION This is a mini desktop constant pressure amplifier, with beautiful appearance, light weight, easy to carry, and it can be used for background music and radio in family, leisure cafes, classrooms, and other small indoor venues. 3. FEATURES 1. With desktop design, beautiful appearance, light weight, and easy to carry. -
Page 6: Nomenclature And Functions
4. NOMENCLATURE AND FUNCTIONS 4.1 FRONT PANEL MIC 1 AUX 1 AUX 2 PROT POWER 100V CLIP BASS TREBLE MASTER MIC1 INPUT 1. Recording function button 12. PROT/100V/70V/OL/CLIP/SIG 2. MP3 loop playback function button status indicators 13. AUX2 volume control knob 3. -
Page 7: Rear Panel
4. NOMENCLATURE AND FUNCTIONS 4.3 REAR PANEL OUTPUT OUTPUT INPUT 70V/ EMC IN COM COM COM 100V AUDIO AUX2 AUX1 FM ANT MUTE 100V 24 25 21. AC power input socket 22. Cooling fan 23. 100V / 70V speaker output switch 24. -
Page 8: Operation Illustration
5. OPERATION ILLUSTRATION 1.Connect the speakers: ①When the 100V and 70V selector switch to ②When the 100V and 70V selector switch to 70V position, as shown below: 100V position, as shown below: OUTPUT OUTPUT 70V/ 70V/ COM COM COM 100V COM COM COM 100V 100V... - Page 9 5. OPERATION ILLUSTRATION 4.Microphone using: 1.Turning the volume knob to the left,Connect the microphone and microphone input interface. 2.Turning the volume knob in the right position. 3.Facing the microphone and Speak loudly, turn the volume knob to the right, until the output signal no longer distortion.If input is high but output is low voice, and then increase the volume by using the volume knob.If the speaker volume is very high, then reduce the volume by using the volume knob.
- Page 10 5. OPERATION ILLUSTRATION TF card function Insert a TF card (below 32G) to copy the MP3 file, and it supports MP3 / WAV / WMA / AEC / FLAC format. FM (Radio reception) function Press the MODE button to select the FM mode, and then long press the PLAY / PAUSE button to automatically receive the radio station.
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Page 11: Troubleshooting
6. TROUBLESHOOTING Failure phenomena Failure cause 1 . Power line is cut off 1. Power switch is not opened 2. The protection function of the equipment is not activated 1. The power switch is not opened or the power plug is bad contacted. 2. -
Page 12: Applications
7. APPLICATIONS REAR PANEL CONNECTIONS CD PLAYER 70V/100V Speakers CD PLAYER MIXER AMPLIFIER OUTPUT OUTPUT INPUT 70V/ EMC IN COM COM COM 100V AUDIO AUX2 AUX1 FM ANT MUTE MIC1 Input 100V AC Power Input External FM antenna STANDBY ALARM MODE PLAY RECORD PLAY... -
Page 13: Block Diagram
MUTE_MIC1 LEVEL AUDI O OUT ENC IN LEVEL MUTE_ALL MIC1 Amplifier output LEVEL BASS TREBLE Protection circuit LEVEL LEVEL AUX1 AUX2 120W/240W 2-STAGE EQ Amplifier LCD display module MUTE_MIC1 Switchover between 70V and 100V Fun control LEVEL BP1048B2 (Crystal: 24MHz) MP3/BT MODLE BT Antenna 2402 ~ 2480MHz... -
Page 14: Specifications
9. SPECIFICATIONS Model SFB120 SFB240 Rated Power Output 240W 120W 70V/100V Speaker Output Input Sensitivity& MIC input: + 5mV, unbalanced 6.3 connector Source Impedance AUX input: 350mV, unbalanced RCA connector Bass: 100Hz±10dB，Treble: 10KHz±10dB Tone Frequency Response 80Hz~16KHz(-3dB) S/N Ratio ≥75dB Rated power output, distortion ≤... - Page 15 PUBLIC ADDRESS SYSTEM F C C S t a t e m e n t T h i s e q u i p m e n t h a s b e e n t e s t e d a n d f o u n d t o c o m p l y w i t h t h e l i m i t s f o r a C l a s s B d i g i t a l d e v i c e , p u r s u a n t t o p a r t 1 5 o f t h e F C C R u l e s .
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