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8

5. OPERATION ILLUSTRATION

1

.

Connect the speakers:

Constant 

voltage

 speaker 

not to exceed 120 Watts

total wattage of all speakers combined.

 selector switch 

   

is in the 70V 

position, as shown below: 

When the 70V / 4-16Ω

   

is in the

 

When the 

7 0V

 and 4-16

Ω

 selector switch 

4-16

Ω

 position, as shown below:

Fixed resistance speaker: 4-16Ω

Note:

1.

Before connecting the speakers, please make sure that the equipment is powered off

 to avoid

 the

risk of electric shock.

2.

During the installation of speakers, please make sure that the sum of the rated input power

 

of the

speakers to be connected is less than 

120 watts.

2.Connect external devices

Please ensure that the equipment and all equipment will be connected 

is

 powered off.

Using the corresponding cable to connect this equipment and other external equipment.

:

3.Connect the power line and turn it on:

· Please make sure that the power switch of the Mixer/Amp and its connected equipment are

turned off.

· Turn the volume knob to the left.
· Connect the supplied power line to the AC IN interface
· Plug the power line into the AC socket.
· Turn on the connected equipment (music source, etc.), and then turn on the Mixer/Amp.

Note:

1.

Before powering on, please check and make sure there is no problem with the cable and connection.

2.

When you turn off the system, turn off the 

Mixer/Amp

, and then turn off the connected equipment.

4-16

Ω

100V

OUTPUT

100V/4-16

Ω

NC

NC

SPK-

SPK+

4-16

Ω

100V

OUTPUT

100V/4-16

Ω

NC

NC

SPK-

SPK+

Summary of Contents for MRT-B120D

Page 1: ...his manual to obtain the optimum results from this unit We also recommend that you keep this manual handy for future reference ON OFF POWER MIC1 INPUT MRT 120D PROT AUX 2 MIC 3 MIC 1 MIC 2 MASTER 100V SIG CLIP TREBLE BASS 10 0 10 0 10 0 10 0 10 0 10 0 4 16Ω MIC 4 AUX 1 A U D I O ...

Page 2: ...Y PRECAUTIONS 3 2 GENERAL DESCRIPTION 5 3 FEATURES 5 4 FUNCTIONS 4 1 Front Panel 6 4 2 Rear Panel 7 5 OPERATION ILLUSTRATION 8 6 9 7 APPLICATIONS 10 8 BLOCK DIAGRAM 11 9 SPECIFICATIONS 12 10 DIMENSIONAL DIAGRAM 14 TROUBLESHOOTING ...

Page 3: ...the power cord as doing so may result in fire or electric shock Be sure to replace the unit s terminal cover after connection completion Because high voltage is applied to the speaker terminals never touch these terminals to avoid electric shock Be sure to ground the safety ground earth terminal to avoid electric shock Never ground to a gas pipe as a catastrophic disaster may result Avoid installi...

Page 4: ...r steam as doing otherwise may result in fire or electric shock When the Unit is in Use 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 Make sure that the volume control is set to the minimum position before the power is switched on Loud ...

Page 5: ...nput has independent gain adjustment and overall treble bass and master volume control 4 The mixer amp is equipped with level indication overload and protection indicator and provides protection for short circuits overload and overheat situations 5 The microphone inputs provide priority over the AUX inputs EMC takes precedence over all audio inputs 6 Channel priority function EMC MIC1 MIC2 MIC3 MI...

Page 6: ...L 11 12 1 2 3 4 5 6 7 8 9 10 1 MIC1 unbalanced input jack 2 MIC1 volume control knob 3 MIC2 volume control knob 4 MIC3 volume control knob 5 MIC4 AUX1 volume control knob 6 AUX2 volume control knob 7 BASS adjustment potentiometer 8 TREBLE adjustment potentiometer 9 Master volume control 10 PROT 70V 4 16 OHM CLIP SIGNAL STATUS 11 Power switch 12 Power indicator ...

Page 7: ...ch 4 Cooling fan 5 Line output interface 6 2 channel AUX input interface 7 Line input Mic input Phantom power switch for MIC4 8 MIC4 AUX1 Balance input 9 Line input Mic input Phantom power switch for MIC3 10 MIC3 Balance input 11 Line input Mic input Phantom power switch for MIC2 12 MIC2 Balance input 13 MUTE control switch 14 Line input Mic input Phantom power switch for MIC1 15 EMC input interfa...

Page 8: ...nal devices Please ensure that the equipment and all equipment will be connected is powered off Using the corresponding cable to connect this equipment and other external equipment 3 Connect the power line and turn it on Please make sure that the power switch of the Mixer Amp and its connected equipment are turned off Turn the volume knob to the left Connect the supplied power line to the AC IN in...

Page 9: ...ached 2 Turn off the power switch of the Mixer Amplifier prior to turning off the input sources 6 TROUBLESHOOTING Symptom 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 on or the power plug is not connected to a live AC outlet 2 The fuse has failed 3 The...

Page 10: ...4 MIC 3 MIC 2 EMC IN MUTE G G G G MIC 1 NC G OUTPUT 100V 4 16Ω NC NC 7 APPLICATIONS REAR PANEL CONNECTIONS 10 OPEN CLOSE PLAY STOP NEXT PREVIOUS ON OFF POWER Audio source equipment M I C VOL PLAY MSG MIC in PLAY SIREN REC in ON OFF STANDBY PLAY ALARM MODE RECORD STOP START Alarm signal generator Speaker AC power input ...

Page 11: ... SS TREBLE LEVEL Protection circuit LED display Fun control Amplifier output LEVEL LEVEL LEVEL LEVEL LEVEL MUTE_MIC1 MUTE_ALL Q2 GND MUTE_ALL Q1 GND MUTE_MIC1 AUDIO OUT Switchover between and 100V 4 16Ω DC 24V inverter power supply switching power supply Amplifier module ...

Page 12: ...4 inches 180W 9 5 lbs 110V 50Hz 120V 50Hz 220V 50Hz 230V 50Hz 240V 50Hz 110V 60Hz 120V 60Hz 220V 60Hz 230V 60Hz 240V 60Hz 120W 4 16Ω 100V MIX OUT 1000mV 470Ω unbalanced RCA connection terminal Bass 10dB at 100Hz Treble 10dB at 10KHz 80Hz 16KHz 1dB 3dB Power indicator 50dB MIC1 2 3 66dB AUX1 2 85dB 0 05 at 1KHz 1 3 rated power T B120D Protection Mode Voltage Operation Temperature Storage Temperatur...

Page 13: ... SIG CLIP TREBLE BASS 10 0 10 0 10 0 10 0 10 0 10 0 4 16Ω 1 75 1 9 19 44 12 5 6 10 DIMENSIONAL DIAGRAM 14 UNIT Inches 1 75 17 1 ON OFF POWER MIC1 INPUT PROT MIC 4 AUX 1 AUX 2 MIC 3 MIC 1 MIC 2 MASTER 100V SIG CLIP TREBLE BASS 10 0 10 0 10 0 10 0 10 0 10 0 4 16Ω Warning Keep all sides of the unit clear and free from dust and objects to avoid overheating of the amplifier and potential fire hazards A...

Page 14: ...ot apply to products purchased or transferred elsewhere If you purchased this product or have subsequently transferred it outside the fifty United States you should contact your local Mixhits Audio distributor for warranty information You are responsible for transporting your product to as well as from in the event that Mixhits Audio finds no defect covered by this warranty either Mixhits Audio or...

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