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An all-pole mains switch with a contact separation of at least 3 mm in each pole shall be incorporated in

the electrical installation of the building.

When Installing the Unit

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 plu

g.

 

N

ever pull on the

cord itself. Operating the unit with a damaged

power supply cord may cause a fire or electric

shock.

When moving the unit, be sure to remove its

power supply cord 

f

rom the wall outlet.

 

Moving the

unit with the power cord connected to the outlet

may cause damage to the power cord, resulting in

fire or electric shock. When removing the power

cord, be sure to hold its plug to pull.

Do not block the ventilation slots in the unit's

cover. Doing so may cause heat to build up inside

the unit and result in fire.

• 

Avoid installing the unit in humid or dusty

locations, in locations exposed to the direct

sunlight, near the heaters, or in locations

generating sooty smoke or 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 noise produced at high volume when power is

switched on can 

damage

 hearing.

Do not operate the unit for an extended period of time

with the sound distorting. This is an indication of a

malfunction, which in turn can cause heat to generate

and result in a fire.

If dust is allowed to accumulate in the unit over a

long period of time, a fire or damage to the unit

may result.

 Contact your Mixhits Audio dealer to

schedule a cleaning of the unit.

If dust accumulates on the power supply plug or

in the wall AC outlet, a fire may result.

 

Clean it

periodically. In addition, insert the plug in the wall

outlet securely.

Switch off  the  power, and unplug the power

supply plug from the  AC outlet for safety

purposes when cleaning or leaving the unit

unused for 

several days

. Doing otherwise may

cause a fire or electric shock.

4

 SAFETY PRECAUTIONS

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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