PUBLIC ADDRESS SYSTEM OPERATION MANUAL A 4260A/A 4262A 1X120W/1X240W CLASS D MIXER AMPLIFIER 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.
TABLE OF CONTENTS 1. SAFETY PRECAUTIONS .......................................................................................3 2. GENERAL DESCRIPTION ....................................................................................5 3. FEATURES ...............................................................................................................5 4. FUNCTIONS 4.1 Front Panel ..............................................................................................................6 4.
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 PRECAUTIONS When the Unit is in Use When Installing the Unit Do not place heavy objects on the unit as this may cause it to fall or break which may result in personal injury and/or property damage. In addition, the object itself may fall off and cause injury and/or damage. Never plug in nor remove the power supply plug with wet hands, as doing so may cause electric shock. When unplugging the power supply cord, be sure to grasp the power supply plug; never pull on the cord itself.
2. GENERAL DESCRIPTION This is mixer amplifier with MP3/TUNER/Bluetooth,adopting high-performance switching power supply and class D power amplifier chip combination; 1U chassis design, high efficiency, light weight, beautiful appearance. 3. FEATURES 1. MP3 decoding module supports USB / SD / Bluetooth / FM playback automatically switch. Configure MP3 remote control; support power-off memory and MIC recording function. 2. Support 1 channel EMC input, 2 AUX input, 4 MIC input. 3.
4. FUNCTIONS 4.1 FRONT PANEL 18 17 1 2345 MADE IN CHINA A 4260A 1X120W CLASS H MIXER AMPLIFIER 6 7 8 9 10 11 12 13 14 15 16 1. SD / MMC card slot 11. BASS adjustment potentiometer 2. PREV / VOL reduce 12. TREBLE adjustment potentiometer 3. Playback / Pause 13. Master volume control 4. Next / volume plus 14. PROT/100V/4-16Ω/CLIP/SIG status indicators 5. MP3 mode selection 6. MIC1 volume control knob 15. The power switch 7. MIC2 volume control knob 16. The power indicator 8.
4. FUNCTIONS 18 17 AUDIO 1 2 3 G 5 4 AUX2 G MIC 3 7 8 9 1011 1213 14 15 16 1. AC power input socket 2. 100V/4-16Ω output interface 3. 100V / 4-16Ω speaker output switch 4. Cooling fan 5. Line output interface, used to connect the line input interface 6. 2 channel AUX input interface, used to connect AUX output interface 7. Line input /Mic input /Phantom power switch for MIC4 8. MIC4 Balance input 9. Line input /Mic input /Phantom power switch for MIC3 10. MIC3 Balance input 11.
5. OPERATION ILLUSTRATION 1. Connect the speakers: ① When the 100V and 4 -16Ω selector switch to 4-16Ω position, as shown below: ②When the 100V and 4 -16Ω selector switch to 100V position, as shown below: OUTPUT BATT SUPPLY DC24V 8A OUTPUT BATT SUPPLY DC24V 8A 4-16Ω/ COM 100V 100V SPK- 4-16Ω/ COM 100V 100V 4-16Ω SPK+ SPK- 4-16Ω SPK+ Maximum output voltage: 100V Minimum speaker impedance: 4 Ω Note: 1. Before connecting the speakers, please make sure that the equipment is powered off.
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. 5.
5. OPERATION ILLUSTRATION 7.Mobile phone bluetooth operation method: ①Press the " MODE " button on the MP3 player and set to bluetooth MODE. ②Enter the mobile phone Settings, find the bluetooth related Settings. ③Click on the bluetooth switch, turn on the bluetooth, if already turned on, then ignore. Because mobile phone system is different, setting interface may be a little different.
6. TROUBLESHOOTING Failure phenomena Failure cause 1. Power switch is not opened 1 . Power line is cut off 2. The protection function of the equipment is not activated 2. All lines are connected, but there is no sound. 1. The power switch is not opened or the power plug is bad contacted. 2. The fuse is burnt 3. The volume knob is not opened or turned down to a extra low level 4. There is no audio signal input 5. There is short-circuit in the speaker line. 3.
POWER ON 12 AUX2 G MIC 3 G MIC 2 G MUTE LINE MIC PHANTOM G MIC 4 LINE MIC PHANTOM 4-16Ω AUDIO AC power input MIC 1 INPUT 100V/4-16Ω 100V OFF LINE MIC PHANTOM OUTPUT OUTPUT BATT SUPPLY DC24V 8A LINE MIC PHANTOM IN ~240V 50Hz 180W STOP PREVIOUS NEXT EMC IN + G MUTE AUX1 MI C ALARM MODE VOL PLAY RECORD START STOP Alarm signal generator Speaker FM ANT PLAY OPEN CLOSE PLAY MSG PLAY SIREN MIC in STANDBY REC in ON OFF 7.
LEVEL 4 3 2 1 MIC1/FM ANT AUDIO OUT GND MIC1 MIC1/FM ANT 4 3 2 1 LEVEL MUTE_ALL LIN E/MIC PHANTOM LEVEL BA SS TREBLE GND Protection circuit LEVEL MIC2 3 2 1 LIN E/MIC PHANTOM 2-STAGE EQ LEVEL GND Q1 MUTE_MIC1 13 GND MIC3 3 2 1 Amplifier module 3 2 1 Fun control LEVEL LIN E/MIC PHANTOM Q2 GND AUX1 AUX2 LED display Switch over between 4 -16Ω and 100V LIN E/MIC PHANTOM GND MIC4 60W/120W/240W GND MP3/BT MODLE MUTE_ALL DC 24V inverter power supply switching power supply Amp
9. SPECIFICATIONS Model A 4260A A 4262A Rated Power 120W 240W Output Level 4-16Ω/100V MIC:2mV ±1mV LINE: 100mV±20mV AUX: 350mV±20mV EMC: 775mV±40mV Input Sensitivity Pre-output AUDIO OUT: 1V±50mV/ 100Ω Mic Tones Low frequency :±10dB at 100Hz； High frequency :±10dB at 10KHz Music Tones Low frequency :±10dB at 100Hz； High frequency :±10dB at 10KHz Effector Parameter Frequency Response AUDIO OUT ：20H z～20KH z （ ±3dB） MIC：200Hz～16KHz（ ±3dB） SNR MIC： ≥65dB; Music:≥70dB THD THD+N≤0.
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PUBLIC ADDRESS SYSTEM Version 0.
