ITC T-2080K, T-2240K Operation Manual

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PROFESSIONAL STEREO KARAOKE AMPLIFIER

T-2240K

OPERATION MANUAL

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

T-2120K

T-2080K

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TABLE OF CONTENTS

1. SAFETY PRECAUTIONS ...................................................................................... 3

2. PRODUCT DESCRIPTION ................................................................................... 5

3. FEATURES .............................................................................................................. 5

4. NOMENCLATURE AND FUNCTIONS

4.1 Front Panel ............................................................................................................ 6

4.2 Rear Panel............................................................................................................. 7

5. USER MANUAL....................................................................................................... 8

6. APPLICATIONS ......................................................................................................11

7. BLOCK DIAGRAM..................................................................................................12

8. SPECIFICATIONS .................................................................................................13

9. DIMENSIONAL DIAGRAM ...................................................................................14

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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. Before operating your product, read this manual first and understand the safety symbols and messages so you are thoroughly aware of the potential safety

Indicates a potentially hazardous situation which, if mishandled, could result in death or serious personal injury.

Indicates a potentially hazardous situation which, if mishandled, could result in moderate or minor personal injury, and/or property damage.

When Installing the Unit

Do not expose the unit to rain or an environment where it may be splashed by water or other liquids, as doing so may result in fire or electric shock.

Use the unit only with the voltage specified on the unit. Using a voltage higher than that which is specified may result in fire or electric shock.

Do not cut, kink, otherwise damage nor modify the power supply cord. In addition, avoid using the power cord in close proximity to heaters, and never place heavy objects -- including the unit itself -- on 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 to the safety ground (earth) terminal to avoid electric shock. Never ground to a gas pipe as a catastrophic disaster may result.

Avoid installing or mounting the unit in unstable locations, such as on a rickety table or a slanted surface. Doing so may result in the unit falling down, causing personal injury and/or property damage.

Do not place cups, bowls, or other containers of liquid or metallic objects on top of the unit. If they accidentally spill into the unit, this may cause a fire or electric shock.

Do not insert nor drop metallic objects or flammable materials in the ventilation slots of the unit's cover, as this may result in fire or electric shock.

When the Unit is in Use

Should the following irregularity be found during use, immediately switch off the power, disconnect the power supply plug from the AC outlet and contact your nearest ITC dealer. Make no further attempt to operate the unit in this condition as this may cause fire or electric shock. If you detect smoke or a strange smell coming from the unit. If water or any metallic object gets into the unit If the unit falls, or the unit case breaks If the power supply cord is damaged (exposure of the core, disconnection, etc.) If it is malfunctioning (no tone sounds.)

To prevent a fire or electric shock, never open nor remove the unit case as there are high voltage components inside the unit. Refer all servicing to your nearest ITC dealer.

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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 plug; never 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 from 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.

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 10 days or more. Doing otherwise may cause a 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 minimum position before power is switched on. Loud noise produced at high volume when power is switched on can impair 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.

Contact your ITC dealer as to the cleaning. If dust is allowed to accumulate in the unit over a long period of time, a fire or damage to the unit may result.

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3. FEATURES

2. PRODUCT DESCRIPTION

1. Power output 2x80W, 2x120W, 2x240W.

2. Built-in multi-function effector to ensure more realistic result.

3. Independent three channel mic input, independent tone and volume control, accurately and conveniently to control the mic signal.

4. Four stereo signal input, signal input with convenient automatic / manual selection

5. EMC input with highest priority, with priority switch. When turn off the switch priority, the other signal can be input at the same time. Signal Input Priority: EMC MIC VCD, DVD, BGM.

6. Independent Tone and volume control. Overall tone and volume control

7. Audio signal with channel switch, freedom output signal: L+L, R+R, L+R.

8. Dual 8-segment LED output level indicator.

9. Microphone input with phantom power switch, to suit different microphone input

10.Temperature and short circuit protection

T-2080K-2120K-2240K are two-channel multimedia amplifier, output power is 2x80W, 2x120W and 2x240W, better for the large scale system, the model is with separate volume control, connect with 4 to 8 ohm speaker , it design with the impeccable protection include short circuit protection, DC output protection, temperature protection, overload protection, also with best fan. The design not only ensure efficient cooling, but also ensure a quiet working condition.

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4.1 FRONT PANEL

16. Left /right channel balance adjustment potentiometer

17. Master volume potentiometer

18. Power switch

19. Power indicator

21. Left /right channel temperature indicator

22. Left /right channel output level indicator

23. Priority indicator

24. Audio input selection button with indicator

25. Manual / automatic input mode indicator

26. Automatic level control indicator

27. Automatic level control switch

28. MIC1 mute potentiometer

29. MIC1~3 / MUSIC MID audio potentiometer

1. MIC1 ~ 3 / MUSIC bass potentiometer

2. MIC1 ~ 3 / MUSIC channel volume potentiometer

3. MIC1 ~ 3 / MUSIC treble potentiometer

4. MIC1 priority selection switch

5. Left/Right channel input indicator

6. Left/Right channel Input Selection Button

7. Reverberation Delay potentiometer

8. ECHO Relay potentiometer

9. Reverberation time adjustment potentiometer

11. Reverberation effects potentiometer

12. ECHO Repeat effects potentiometer

13. ECHO effector volume potentiometer

14. Master volume bass adjustment potentiometer

15. Master volume treble adjustment potentiometer

4. NOMENCLATURE AND FUNCTIONS

1 234

5 678 910

11121314

15 16

18 19

2122

2526

2829

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4.2 REAR PANEL

NOMENCLATURE AND FUNCTIONS

38. Audio input jack (DVD/VCD/BGM), Input Sensitivity: 350mv 30mv/10k

39. EMC alarm voice input, Input Sensitivity: 775mV 50mV

40. EMC mute switch is pressed, set EMC priority, mute MIC1~3, MUSIC (DCD,VCD,BGM) channel signal

41. Audio effects signal input, input sensitivity: 350mV 50mV/10K

42. Audio signal effector output

43. Audio output, REC: recording output, connect to external recording device. SW: subwoofer output connect to external amplifier, PRE: pre-audio output, connect to external amplifier)

44. Video signal input (DVD/VCD/BGM)

45. The video signal output (DVD/VCD/BGM), select one mode as output

30. AC power input socket (with fuse box)

31. Vent and fan

32. Left/right channel output (connected with impedance speaker)

33. MIC1~3 input gain potentiometer (adjustment range: -46dB~-9dB)

34. MIC1~3 XLR input, (input sensitivity: 5mV (GAIN set +) 0.5 mV 350mV (GAIN set -) 30mV)

35. MIC1~36.3 stereo input interface (input sensitivity: 5mV (GAIN set +) 0.5 mV, 350mV (GAIN set -) 30mV)

36. MIC1~3 phantom power switch (output voltage DC + 48V)

37. Automatic audio selector switch (when ON : automatic control mode working, when OFF: manual control mode working, 24 buttons control on the front panel )

32 33

3738

4344

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5.1 Power on and power off

Input AC220V 10%, switch is turn on, blue power indicator light up , then the power is turned on. After 3 to 5 seconds, the amplifier is working normally. When switch is turn off, blue power indicator go out , then the power is turned off, all the indicators go out at the same time.

5.2 Mute function

MIC1 input audio signal (2~350mV): Press "PRIORITY" button on the front panel , "PRIORITY MIC" indicator light up, "MUTE" potentiometer set maximum, MIC1 potentiometer set to scale "4" or higher, priority function is working. MIC1 output normally, the other channel signal is muting , mute result is controlled by audio signal input on MIC1, MIC1 volume potentiometer and "MUTE potentiometer". Press "PRIORITY" button; MIC priority function is turned OFF, MIC1 output mixed with other channel.

Note: When on EMC priority, MIC1 signal is muted.

5.3 Function of music signal automatic input selection and audio/video input selection

5.3.1 The real panel input selector switch "AUTOSEL" in the 0N position, "INPUT SELECTOR AUTO" indicator lights, this moment is the automatic audio input selection state, between "BGM, VCD, DVD" channel, switching time is about 3 to 5 seconds, choose the audio input channels, and the front panel of the corresponding channel indicator will be synchronized lighted(eg DVD), while the video signal input in "VIDEO INPUT DVD" port will also be output in "VIDEO OUT" port synchronously, and next to the main amplifier output. When there is no input audio source, the default BGM channel.

5.3.2 The rear panel input selector switch "AUTOSEL" in the OFF position, "INPUT SELECTOR MANUAL indicator lights, then manually select the input audio source; press any button of "BGM, VCD, DVD" below the panel audio input selection " AU-DIOSELECTOR ", indicator lights, means select the input channel which indicator shows. under the current state, the output signal source from pre-amp and power amp is the channel output signal which indicator shows; and the current video output port is also synchronized to match the output (for example: when the DVD audio and video signal input channel, press "DVD" button representative DVD channel, then lights up "VIDEL INPUT DVD" lights, and turn DVD audio signal path to the pre-amp output port, while the video signal input in "VIDEO INPUT DVD" port will Synchronous output in "VIDEO OUT" port, and power amp output. ) Note: When the machine is in automatic audio input selection status, manual operation is disabled.

5.4 MUSIC signal channel switching function

press LRSEL key on the panel, L+R indicator lights, input L, R stereo signal, the power amplifier

output stereo signal, input MONO signal, the power amplifier output MONO signal;

press LRSEL key on the panel, L+L indicator lights, input mono L signal, the power amplifier output

is two L signal;

press LRSEL key on the panel, R+R indicator lights, input mono R signal, the power amplifier output is two R signal. Note: This function setting is only available for the music (DVD, VCD, BGM) input channel, MIC1~3 input channel settings are invalid.

5. USER MANUAL

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5.5 MIC volume adjustment

"MUSIC" is music potentiometer, control the input level of the music channel; "MIC1~3" is volume potentiometer, control the input level of the microphone; "BASS" is the bass potentiometer, adjust low frequency 65Hz~550Hz; "MID" is the midrange potentiometer, adjust middle frequency 1KHz~3KHz; "TREBLE" is the treble potentiometer, adjust high frequency 5KHz~10KHz.

5.6 MIC phantom power voltage switch

Open the corresponding code (1-3) of the phantom power switch(PHANTOM) between the corresponding MIC1~3 input XLR 1-2 feet and 1-3 feet will have DC 45~48V voltage output. Turn off phantom power switch(PHANTOM), off phantom voltage slowly drop to 0V.

5.7 MIC ALC (automatic level control)

Input Rated signal to the MIC channel, when the output is rated power; press "MIC ALC" key once, OFF indicator lights, MIC ALC function off; press "MIC ALC" key again, the indicator -9, -12 , -14, -18 were lit from left to right, ALC function on, while the output of the audio signal will decay -9dB,-12dB,-14dB,-18dB, lastly cycle this function. (When power is off, the last set default)

5.8 Microphone effector "DELAY" reverb delay effect potentiometer, adjustable time range: 0ms~100ms; "DELAY" echo delay reverb effect potentiometer, adjustable time range: 80ms~240ms, adjustment of the

delay time should be based on the rhythm of the music and polish processing requirements, singing method, actors and other voice characteristics to select the appropriate delay. In general: When meeting voice and dialogue voice, usually adjusted "80ms ~ 110ms ", a short delay effect at this time, is more suitable for short rhythm and single tone of voice, while singing, the adjustable delay time is often above "150 ms", the sound is more charming at this moment.

"TIM" reverberation time adjustment potentiometer, adjustable time range: 0.1ms~2ms; "REPEAT" repeat echo reverb effects potentiometer, adjustable times range: 1 to 12 times; "REVERB" reverb potentiometer, adjust the microphone reverb (echo) effect of depth, and usually used

for drama, movies, TV shows simulated echo valley, Hall and Hall echo effect. "ECHO" reverb echo effect potentiometer, adjust the reverb depth of microphone, the sound effect is more abundant, but can not be stressed too deep, otherwise the sound will become dim and not clear, easy to cause noise and howling. "EFFVOL" microphone effect adjustment potentiometer, adjust the mixing ratio of reverberant Sound and direct sound, generally reverberant sound level should be less than the direct sound level, adjustment of the mixing ratio relates to the following factors:

Room reverberation characteristics. room reverberation is heavy, the mixing ratio should be smaller; room reverberation is light, the mixing ratio can be increased appropriately.

Adapterization mode. Microphone away from the sound source, the mixing ratio should be smaller; mic near to the sound source, the mixing ratio can be increase appropriately.

Timbre of sound source. sound source is plump and vigorous, clarity is poor, the mixing ratio should be smaller; sound source is dry, thin and high-definition, the mixing ratio can be increased appropriately.

USER MANUAL

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5.9 master volume control

"Master Volume" potentiometer, control the master volume of power amp total level. The master volume is recommended not to open the greatest potential to retain 20% of the spare values. "BASS" potentiometer, adjust the low frequency 65Hz~550Hz of power amp. "TREBLE" Treble potentiometer, adjust the high frequency 5KHz~10KHz of power amp. "BALANCED" is adjusting the balance of the main amplifier. When "BALANCED" set in middle, L&R channel has an output; when "BALANCED" set in R, R channel has an output, shut down the L-channel output; when "BALANCED" set in L, L channel has an output, shut down the R-channel output.

5.10 output level indicator

Green signal indicator, the lights (from left to right, from 1 to 8 green LED) indicates that the channel's

output level, brightness will change with the changable of output level amplitude size. Lights on the circuit is connected in parallel at the output of the amplifier, so that when the panel master volume potentiometer rotates to the minimum position, regardless of whether there is an input signal, lights will not illuminate.

Orange peak indicator lights, when this is highlighted, indicate the output signal of the amplifier channel has reached the peak (rated power).

Red indicator light of peak clipping. The range of the amplifier output signal of the channel is more than the summit when the light turns on, peak clipping is appeared . If it happens, please turn down the signal output or diminish output gain.

Red indicator light of overheating protection, the channel of this amplifier is turn off to protect the equipment as the overheating. In this case, the "Port" light is lit. please close the amplifier, check whether it is in a good ventilation, if the wind can go smoothly through wind grid .If the load impedance is too small.

The red indicator light of protection, The machine in the protection state when this indicator turn on, It is convenient to find out the problem. Indicator light is lit about 3 s ~ 5 s continuously when startup amplifier self-check process. During this period the amplifier is no output. This phenomenon is normal. Indicator protection function: overheating protection, overload protection, short circuit protection. If not belong to these after checking but with bright "PORT" light. There is something wrong with the amplifier, please send the amplifier to a professionals to repair.

USER MANUAL

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6. APPLICATIONS

BGM

VCD

DVD

Connect microphone

Power input

Connect main speakers

Connected main speakers

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7. BLOCK DIAGRAM

EFFECT

GND

FBC

AMP

GND

EFFECTOR-OUT

EFFECTOR-IN

132

PRE-OUT

S.W-OUT

MIC1

MIC2

MIC3

MIC1

MIC2

MIC3

AC220V

(MCU/LA72730)+5V

AMP-POWER

VCC48V

PHANTOM+48V

POWER

BGM

VCD

DVD

MCU

VIDEO-OUT

LIN

BGM

VCD

DVD

2SD1302

BGM

VCD

DVD

RIN

TONE

REC-OUT

L H

MUTE

LA72730

R TONE

L1H1

RP1

L1 H1

RP1

L1 H1

RP1

L1 H1

RP1

GND

MIC-MUTE

TONE&VOL

CD4052

STEREO

LCH MONO

RCH MONO

GND

123 4

GND

BGM

VCD

DVD

EMC

GND

BGM

VCD

VIDEO-OUT

+12V

-12V

+7.5V

-7.5V

GND AMP-OUT

GND

PBC

LR-SEL

BGM/VCD/DVD

PHAN TOM-SW

IN-AUTO SEL

SEL

LIN

GND

BGM

VCD

DVD

EMC

RIN

L H

2SD1302

GND

AMP

GND

EFFECTOR-OUT

EFFECTOR-IN

PRE-OUT

S.W-OUT

REC-OUT

L1 H1

RP1

GND AMP-OUT

GND

L1H1

RP1

L1 H1

RP1

GND

LCH

RCH

MUTE

BAL

VCD

DVD

VCD

DVD

GND

BGM

VCD

DVD

L+L L+R R+R

DVD

+3.3V

FBC

-3.3V

EMC-LIN

EMC-RIN

EMC-MUTE

RES

GNDGND

EMC-R

EMC-L

EMC-R

EMC-L

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8. SPECIFICATIONS

Model

Output of rated power

Speaker output

The input sensitivity and impedance

T-2080K

2x80W

4~8

Mic1,2,3: 2.5mV/600 ~775mV/10K (balance input)

AUX(KARAOKE): 200mV/10K (unbalance input)

DVD: 300mV/10K (unbalance input)

VCD: 300mV/10K (unbalance input)

BMG: 300mV/10K (unbalance input)

Output

External processor input/output: 775mV/470

Heavy bass(150Hz): 1.5V/470

Pre: 1000mV/470

Video:1VP-P/75

Effector parameters

ECHO DELAY: 80ms~240ms; ECHO REPEAT: 1~12

REVERB DELAY: 0ms~100ms; REVERB REPEAT: 0.1S~2S

20Hz~20KHz( 3dB)

Signal to noise ratio

Mic 1,2,3: 66dB

Music: 80dB

Harmonic distortion

Less than 0.1% at 1KHz, 1/3 rated power

Indicator light

Power supply, outgoing level

Power input

Power consumption

280W

Dimension(mm)

Weight

430x399x132mm

11Kg

T-2120K

T-2240K

2x120W

2x240W

400W

11.46Kg

700W

13.52Kg

~110V 50Hz ~110V 60Hz

~120V 50Hz ~120V 60Hz

~220V 50Hz ~220V 60Hz ~230V 50Hz ~230V 60Hz ~240V 50Hz ~240V 60Hz ~220-240V 50-60Hz

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9. DIMENSIONAL DIAGRAM

Over

UNIT :mm

132

140

430

484

UNIT :mm

132

374

360

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PUBLIC ADDRESS SYSTEM

VersionV0.1