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TABLE OF CONTENTS SAFETY PRECAUTIONS ............................................................................3 MPA-20,MPA-40 1. FEATURES................................................................................................5 2. NOMENCLATURE AND FUNCTIONS ...........................................................6 2.1 FRONT PANEL........................................................................................ 6 2.2 REAR PANEL...............................................................
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.
1. FEATURES 1. Rated Power:20W and 40W. 2. 100V,70V constant voltage outputs and 4~16Ohms constant resistance output. 3. 1 channel MIC2 one-port input (5mv 1Kohms) and 1 channel (300mv 10Kohms) AUX input 4. 1 channel MIC1 balanced/unbalanced input (2.5/5mv 1/2Kohms) 5. 1 channel TEL input (sensitivity 350mV/10Kohms) 6. Built in treble and bass adjustment bass: +/-10dB @ 100Hz treble: +/- 10dB @ 10KHz 7. Built in priority functions.
2. NOMENCLATURE AND FUNCTIONS 2.1 20W/40W FRONT PANEL 10 11 MPA-20 MIXER AMPLIFIER OUTPUT LEVEL PROT 2 4 8 6 10 POWER MASTER 4 MIC1 INPUT 5 6 3 4 8 2 9 0 5 6 3 7 1 AUX MIC2 MIC1 8 2 6 8 10 -1 7 9 1 10 0 0 TREBLE -1 +1 -2 8 10 0 6 2 9 1 5 4 BASS 3 7 2 9 0 5 3 7 1 10 4 TEL +2 -3 +3 +4 -4 +5 -5 0 5 4 +2 -3 +3 +4 -4 3 7 1 9 2 3 5 4 ON OFF 8 2 +5 -5 0 1 6 +1 -2 6 10 7 8 9 8. POWER 1.
NOMENCLATURE AND FUNCTIONS 2.2 20W/40W REAR PANEL ~120V 60Hz 40W T2AL 250V OUTPUTS COM 4-16 70V MUTE MIC 1 XLR/6.30 INPUT MIC 2 AUX LINE OUT 100V TEL INPUT G BAL/UNBAL 12 13 14 15 +48V PHANTOM 16 17 18 19 20 12. ~120V 60Hz AC POWER INPUT 16. MIC 1 PHANTOM +48V Power switch 13.SPEAKER TERMINALS 17.MIC 2 MIC input Connectors for 4-16 ohms or 70V and 100V MIC2 input of Microphone speaker 18.AUX input 14.
3. CONNECTIONS 3.1 SPEAKER CONNECTIONS COM 4-16 70V 100V COM 4-16 70V 100V COM 4-16 245 125 4-16 (MPA-20) (MPA-40) 70V 100V 500 250 (MPA-20) (MPA-40) 100V LINE 70V LINE 70V/ 3.2 The combination input accepts either XLR or 1/4" microphone plugs. 1/4" sources can be either balanced or unbalanced as shown.
4. MACHINE OPERATION OPERATION ATTENTION MUTE FUNCTION The four output connectors only can choose two connectors work together. If voltage is 70V/100V, the speakers must be with transformer and make sure the total power wattage of speaker is 15% less than the power wattage of amplifier. 1 Tel has priority over all inputs. 2 MIC 1 is second priority, adjust mute electric potential can override other input signal except tel signal.
~120V 60Hz 40W T2AL 250V COM 4-16 70V OUTPUTS SPEAKERS 100V INPUTS MUTE MIC1 COM 10 LINK BAL/UNBAL L R AUDIO OUT +48V PHANTOM MIC 1 XLR/6.30 INPUT MIC2 3 1 LINE OUT XLR BAL 1-GND 2-HOT+ 3-COLD 3 2 OUTPUTS 1 POWER AMPLIFIER INPUTS 2 AUX TEL INPUT G AUDIO SOURCES MIC 2 TEL INPUT 5.
GAIN/AMP GAIN/AMP GAIN/AMP COMP COMP GAIN/AMP POWER AMP 6.
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8. DIMENSIONAL DIAGRAM UNIT:mm 320 MPA-20 MIXER AMPLIFIER OUTPUT LEVEL 4 8 6 10 POWER 5 6 3 8 2 8 6 8 -1 7 TREBLE -3 +3 +4 5 6 +3 +4 -4 7 3 +2 +5 -5 4 +1 -2 +2 -4 0 -1 +1 -3 8 10 0 0 -2 9 1 10 0 BASS 6 2 9 1 5 4 3 7 2 9 10 0 5 4 3 7 1 10 0 TEL AUX 6 2 9 1 5 4 3 7 66 MASTER MIC2 MIC1 4 MIC1 INPUT ON OFF 8 2 74 PROT 2 9 1 +5 -5 0 10 320 ~120V 60Hz 40W T2AL 250V OUTPUTS COM 4-16 MIC 1 XLR/6.
1. FEATURES 1. Rated Power:60W \120W. 2. 100V,70V constant voltage outputs and 4~16Ohms constant resistance output. 3. Commercial-grade torroidal transformers produce high performance audio on a wide range of frequencies with min noise and high fidelity, even at high volume. 4. Reliable protection against overload, short ciruit, and power fluctuation for optimum reliability. 5. VOX feature mutes AUX inputs when input is detected on MIC 1.
2. NOMENCLATURE AND FUNCTIONS 2.1 60W/120W FRONT PANEL 10 1211 MPA-60 MIXER AMPLIFIER TEMP PROT OUTPUT LEVEL POWER 2 MIC1 MIC2 MIC3 AUX2 AUX1 TEL BASS 4 6 TREBLE 8 10 12 MASTER MIC1 INPUT ON OFF 1 2 3 4 1. MIC1 INPUT MIC1 input 6.3 Microphone jack input 2. MIC1 \MIC2 \MIC3 MIC volume control (MIC1/MIC2/MIC3) 3. AUX1 \AUX2 AUX volume control(AUX 1/AUX 2) 4. TEL TEL volume control 5. BASS Adjust bass response. Rotate clockwise to increase bass output and anticlockwise to reduce it. 6.
NOMENCLATURE AND FUNCTIONS 2.2 60W/120W REAR PANEL www.mcmelectronics.com ~120V 60Hz 100W T3.15AL 250V MUTE OUTPUTS COM COM COM 4-16 70V MIC 1 XLR/6.30 INPUT MIC2 MIC3 TEL INPUT AUX1 AUX2 LINE OUT 100V G BAL/UNBAL 13 14 15 16 PHANTOM 17 18 13.~ 120V 60Hz POWER INPUT 14. SPEAKER TERMINALS Connectors for 4-16 ohms or 70V and 100V speaker 15. Mute adjust Adjust the mute degree from 020dB when MIC1 input override all the other inputs. 16.
3. CONNECTIONS 3.1 SPEAKER CONNECTIONS COM 4-16 70V 100V COM 4-16 70V 100V COM 4-16 81 41 4-16 (MPA-60) (MPA-120) 70V LINE 70V/ 3.2 The combination input accepts either XLR or 1/4" microphone plugs. 1/4" sources can be either balanced or unbalanced as shown.
4. MACHINE OPERATION OPERATION ATTENTION MUTE FUNCTION The four output connectors only can choose two connectors work together. If voltage is 70V/100V, the speakers must be with transformer and make sure the total power wattage of speaker is 15% less than the power wattage of amplifier. 1 Tel has priority over all inputs. 2 MIC 1 is second priority, adjust mute electric potential can override other input signal except tel signal.
~120V 60Hz 100W T3.15AL 250V COM COM COM 4-16 OUTPUTS 70V SPEAKERS 100V MIC1 MUTE BAL/UNBAL 19 MIC2 MIC 3 MIC 2 PHANTOM MIC 1 XLR/6.30 INPUT MIC3 AUX1 TEL INPUT G TEL INPUT AUX2 www.mcmelectronics.com LINE OUT ADRESS TAG INPUTS COM LINK L R AUDIO OUT 2 3 1 INPUTS XLR BAL 1-GND 2-HOT+ 3-COLD 3 2 AUDIO SOURCES OUTPUTS 1 POWER AMPLIFIER 5.
EB TEL 20 AUX2 AUX1 MIC3 MIC2 MIC1 MIC1 EB LINE OUT MUTE MUTE Z POWER LEVEL INDICATOR PROTECT BASS/TREBLE VOLUME PA PT TO 100V ~120V 60Hz COM 4 COM 70V COM 6.
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8. DIMENSIONAL DIAGRAM UNIT:mm 484 MPA-60 MIXER AMPLIFIER TEMP OUTPUT LEVEL PROT POWER MIC2 MIC3 AUX2 AUX1 TEL BASS 6 8 10 TREBLE 12 MASTER MIC1 INPUT 94 MIC1 4 88 2 ON OFF 430 www.mcmelectronics.com COM COM 4-16 MIC 1 XLR/6.30 INPUT MUTE OUTPUTS COM 70V MIC3 MIC2 TEL INPUT AUX1 AUX2 LINE OUT 84 ~120V 60Hz 100W T3.
PUBLIC ADDRESS SYSTEM MCM Custom Audio and Stellar Labs products are warranted, by MCM Electronics, against manufacturer defects for a period of one year from the original date of purchase. This warranty is limited to manufacturer defects, in either materials or workmanship. MCM Electronics, or any other worldwide divisions of Premier Farnell PLC, are not responsible for any consequential or inconsequential damage to any other component, structure or the cost of installation or removal of said items.
