QPRO AUDIO QLP 18K4 Manuale utente

This manual does not contain all the information about the design, production,

and changes of the equipment, and does not cover all the conditions that may

occur during the installation, use and maintenance.

The information provided in this manual is accurate at the time of delivery of

the equipment, it maybe has been changed because of the product upgrade.

Owner's Manual

Professional Amplifier

POW ER

CLI P

SIG NAL

CLI P

SIG NAL

POW ER

CLI P

SIG NAL

CLI P

SIG NAL

1、The equipment can only be inserted in the power outlet that is indicated by the manual.Otherwise

it may cause fire or electric shock.

2、Do not place the container with liquid or small metal objects on the equipment. Otherwise, the

liquid or metal falling into the equipment may cause fire or electric shock.

3、Do not place the weight (including the equipment) on the power cord. Otherwise, it may damage

the power cord, which can lead to fire or electric shock.

4、Do not place the power cord in the vicinity of the heater. Otherwise it may lead to melting, causing

a fire.

5、Do not scratch, bend, twist, stretch or heat power cord. Otherwise, it may damage the power cord,

which can lead to fire or electric shock.

6、Pull off the power plug from the power outlet, please grasp the insulation part of the plug, do not

pull the cable. Otherwise, it may damage the power cord and the socket, which can lead to fire or

electric shock.

7、Do not use wet hands to touch the power plug. Otherwise it may cause electric shock.

8、Please do not let water enter the equipment or make it affected with damp. Otherwise it may cause

fire or electric shock.

9、Please do not the use the equipment in the following occasions:

_An unstable platform surface, such as a shaking table or an inclined plane.

_A place where the air is exposed to high humidity or where dust accumulates.

_Exposed to an overheated environment, such as a window in a closed car or in direct sunlight.

_Exposed to splash oil foam, such as steam, stoves, boilers, humidifiers and other places.

10、There are ventilation holes in front and behind the equipment, to avoid the impact of internal

cooling, do not block the ventilation holes.

11、Please keep enough space around the equipment. Reserved space should not be less than: side

5cm, behind 10cm, and air follow unblocked.

12、If you want to move the equipment, please unplug the power plug and unplug all the connecting

cables. Otherwise, it may damage the cable, which can lead to fire or electric shock.

13、Attachment of the equipment (such as machine foot, manual bag, desiccant, etc.) please put them

in the place where children can not get them.

14、Do not open the equipment cover. Otherwise may lead to electric shock. If you think the equipment

needs to be repaired or maintained, please contact the agent.

15、Do not unauthorized change the equipment. Otherwise, it may result in abnormal, fire or electric

shock.

16、If lightning strikes, please close the power switch as soon as possible, and unplug the power cord.

17、The equipment output signal may be high voltage, there is a risk of electric shock, please use a

dedicated connection header.

18、Connect the speakers to the amplifier output socket, can only use special speaker cable.Use of

other cables may cause fire.

19、When connecting to the equipment, please turn off all the audio equipments and speakers.

20、Before turning on the equipment, be sure to turn the volume knob to the minimum. Otherwise, a

sudden burst of sound may damage your hearing.

21、If you will not use the equipment for a long time, please unplug the power cord from the AC power

outlet. Otherwise it could cause a fire.

22、If the power cord is damaged (such as cut off or bare wire), get the replacement from the agent. Or

continue to use the equipment may cause fire or electric shock.

23、If the equipment is shell damage or falling from high, please immediately turn off the power switch,

and unplug the power cord, and contact the agent. Otherwise it may cause fire or electric shock.

24、When any abnormal, such as smoke, odor, etc., please immediately turn off the power switch,

unplug the power cord, and contact the agent. Otherwise, it may lead to fire or electric shock.

IMPORTANT SAFETY INSTRUCTIONS

Thank you for your trust, buy our class D power amplifier!

Our company focuses on class D power amplifier. The high level of R&D team, experienced

production team and high-quality technical support team ensure that our products used in a variety

of environment are stable and reliable, and bring you a pleasant experience.

In order to maximize the efficiency of the equipment and bring you a pleasant experience,

please read this manual carefully.

1 Preface

1.1 Performance overview

a、 High efficiency and energy saving, operation cost is low.

b、 Compact and light weight , structure is firm.

c、 Comply with the safety and EMC standards.

d、90~260VAC / 50~60HZ Wide range power supply.

e、First-class quality, thanks for the components from international high-end manufacturers.

f、 Temperature control fan for quiet operation.

g、Modular design and maintenance is convenient.

h、Very suitable for mobile show.

i、 Reasonable design makes you feel relaxed in the process of using.

1.2 How to use this manual

This manual provides the basic information for the proper installation and use of the

equipment, and does not cover all the conditions that may arise in the actual project. For more

information, please visit our website or contact our technical support, system installation

personnel or agents.

Please take care of the sales order or invoice for your purchase of this equipment. You need

to show the credentials when the product is guaranteed.

1.3 Warning sign

PROFESSIONAL POWER AMPLIFIER

Important operation or special note

Risk of electrical shock

1.4 Maintenance information card

This manual attached with "maintenance information card", if the equipment sends back to the

agent or service center to repair, please fill in the form and transported together with the equipment.

2 Environmental protection, energy saving, cost saving

Thank for the high efficiency class D power amplifier and switching power supply technology,

the energy efficiency ratio of the equipment is more than 80% in routine use, more than 90% in

laboratory.

Thank for the active power factor correction technique, the equipment can be used all over the

world, and minimizing the interference to the power grid and improving energy utilization efficiency.

Advantages of high efficiency:

* Low working temperature, reliability will be improved obviously.

* The size and weight are only 1/3 of tradition amplifier.

* The cost for transportation, handling, installation will reduce obviously.

* Saving energy, reducing operating costs

* Environmental protection

Aluminum, copper and steel are greatly reduced, saving energy and resources;

reduce transportation emissions 70%.

Climate warming is a challenge to the world, energy saving and emission reduction

are effective measures to solve the climate.

We are committed to providing environmental friendly products. For blue sky ,

white clouds, green mountains and rivers ,let us act together!

3 Installation

3.1 check out of the box

Open packaging and check whether the equipment is damaged in the transportation .

If the equipment is damaged, please inform the shipping company immediately, only you

have the right to request compensation for shipping damage. Please save the packing case

as evidence of damage for the shipping inspection. We will provide the necessary assistance

for you.

It is recommended that you save all packaging materials for use in the transportation

equipment. Do not transport the equipment in the absence of an outer package, so as not

to damage the equipment.

Packing list:

amplifier one pcs User's manual one pcs

Power cord one pcs Speakon connection head one pcs

Machine foot four pcs

465mm

483mm

(370mm)

44mm

3.2 Outline dimensions

SUN ON

PMD1204 P QBX -A

(2).B2220.G N

DC12V —8.0W

SUN ON

PMD1204 P QBX -A

(2).B2220.G N

DC12V —8.0W

SUN ON

PMD1204 P QBX -A

(2).B2220.G N

DC12V —8.0W

SUN ON

PMD1204 P QBX -A

(2).B2220.G N

DC12V —8.0W

A PRODUCT OF

QPRO TECHNOLOGY

GERMANY

1+=CH-B POS

1-=CH-B NEG

1+=CH-A POS; 1-=CH-A NEG

2+=CH-B POS; 2-=CH-B NEG

BRIDG E:1+=POS;2-=NE G

CH-A /B

CH-B

1+=CH-D POS

1-=CH-D NEG

1+=CH-C POS; 1-=CH-C NEG

2+=CH-D POS; 2-=CH-D NEG

BRIDG E:1+=POS;2-=NE G

CH-C /D

CH-D

POWER

CLIP

SIGNA L

CLIP

SIGNA L

3.3 Installation preparation

Warning: before installation, please confirm that you see and read the

safety warning.

Before installation, make sure that the power cord is not connected to the

power outlet; The power switch is turned off; The volume knob is completely

closed (counter clockwise to the limit).

The equipment is high power, around a strong magnetic field. Keep the

signal sensitive equipment away (preferably not less than 20cm),

ortherwise may produce noise.

For the normal operation, following parts is needed:

1、Input connection cable

2、Output connection cable

3、Ethernet cable (for Ethernet interface power amplifier)

4、Cabinets or equipment mounting rack

3.4 Cooling instructions

The cooling mode of the equipment is as follow:

the cold air is sucked through the ventilation hole of

the front panel, and the heat are taken out from the

rear panel. In order to ensure good heat dissipation,

please put the equipment in the 0℃~40℃ environment,

and ensure that the front and rear panel airway open.

If the temperature exceeds 85 degrees, output voltage

will be reduced, avoid excessive temperature rise. If

the temperature continues rise up to 90 degrees, the

power amplifier will be shunted down, when the

temperature dropped to a safe temperature, the

equipment will restart automatically.

After working for some time, if the cooling effect

is not good, please turn off the equipment and remove

the dust net cover to clean up the dust.

3.5 Power cord

The grounding end of the power cord must be grounded,

otherwise there is a risk of electric shock!

PROFESSIONAL POWER AMPLIFIER

The power cord must have sufficient current capacity, AC power supply voltage and frequency

must be in range of ±10% of the nominal value.

3.6 Input / output line

Common knowledge:

Try to use the shielded wire, the higher density shielding layer is the better.

Try to select balance connection for input, to reduce noise interference.

Selection of non balance connection, the shorter the better, preferably not more than 3m.

The weak signal line should avoid to parallel with the power line and the power output line,

otherwise it might produce noise.

Before changing any connection, please turn off all equipments. Otherwise, it may cause

damage to hearing and speakers.

Balanced analog input and

AES3 digital input connection

Non balanced analog input

connection

GND SHIELD

3.61 Stereo Mode

SU NON

PMD 1204PQ BX-A

(2).B 2220.GN

DC1 2V —8.0 W

SU NON

PMD 1204PQ BX-A

(2).B 2220.GN

DC1 2V —8.0 W

SU NON

PMD 1204PQ BX-A

(2).B 2220.GN

DC1 2V —8.0 W

SU NON

PMD 1204PQ BX-A

(2).B 2220.GN

DC1 2V —8.0 W

A PRODUCT OF

QPRO TECHNOLOGY

GERMANY

1+=C H-B POS

1-=C H-B NEG

1+=C H-A POS ; 1-=CH -A NEG

2+=C H-B POS ; 2-=CH -B NEG

BRI DGE:1+=POS ;2-=NEG

CH- A/B

CH- B

1+=C H-D POS

1-=C H-D NEG

1+=C H-C POS ; 1-=CH -C NEG

2+=C H-D POS ; 2-=CH -D NEG

BRI DGE:1+=P OS;2-=N EG

CH- C/D

CH- D

SU NON

PMD 1204PQ BX-A

(2).B 2220.GN

DC1 2V —8.0 W

SU NON

PMD 1204PQ BX-A

(2).B 2220.GN

DC1 2V —8.0 W

SU NON

PMD 1204PQ BX-A

(2).B 2220.GN

DC1 2V —8.0 W

A PRODUCT OF

QPRO TECHNOLOGY

GERMANY

1+=C H-B POS

1-=C H-B NEG

1+=C H-A POS ; 1-=CH -A NEG

2+=C H-B POS ; 2-=CH -B NEG

BRI DGE:1+=POS ;2-=NEG

CH- A/B

CH- B

1+=C H-D POS

1-=C H-D NEG

1+=C H-C POS ; 1-=CH -C NEG

2+=C H-D POS ; 2-=CH -D NEG

BRI DGE:1+=P OS;2-=N EG

CH- C/D

CH- D

CH-CCH-D CH-B CH-A

CH-D CH-A

CH-C CH-B

2+ 1-

CH-C

8Ω

4Ω

2Ω 8Ω

4Ω

2Ω

2+ 1-

CH-A

8Ω

4Ω

2Ω 8Ω

4Ω

2Ω

2+ 1-

CH-D

8Ω

4Ω

2Ω

2+ 1-

CH-B

8Ω

4Ω

2Ω

CH-B

CH-D

CH-B

CH-D

CH-A

CH-C

3.62 Bridge mode

PROFESSIONAL POWER AMPLIFIER

SU NON

PMD 1204PQ BX-A

(2).B 2220.GN

DC1 2V —8.0 W

SU NON

PMD 1204PQ BX-A

(2).B 2220.GN

DC1 2V —8.0 W

SU NON

PMD 1204PQ BX-A

(2).B 2220.GN

DC1 2V —8.0 W

SU NON

PMD 1204PQ BX-A

(2).B 2220.GN

DC1 2V —8.0 W

A PRODUCT OF

QPRO TECHNOLOGY

GERMANY

1+=C H-B POS

1-=C H-B NEG

1+=C H-A POS ; 1-=CH -A NEG

2+=C H-B POS ; 2-=CH -B NEG

BRI DGE:1+=POS ;2-=NEG

CH- A/B

CH- B

1+=C H-D POS

1-=C H-D NEG

1+=C H-C POS ; 1-=CH -C NEG

2+=C H-D POS ; 2-=CH -D NEG

BRI DGE:1+=P OS;2-=N EG

CH- C/D

CH- D

SU NON

PMD 1204PQ BX-A

(2).B 2220.GN

DC1 2V —8.0 W

SU NON

PMD 1204PQ BX-A

(2).B 2220.GN

DC1 2V —8.0 W

SU NON

PMD 1204PQ BX-A

(2).B 2220.GN

DC1 2V —8.0 W

A PRODUCT OF

QPRO TECHNOLOGY

GERMANY

1+=C H-B POS

1-=C H-B NEG

1+=C H-A POS ; 1-=CH -A NEG

2+=C H-B POS ; 2-=CH -B NEG

BRI DGE:1+=POS ;2-=NEG

CH- A/B

CH- B

1+=C H-D POS

1-=C H-D NEG

1+=C H-C POS ; 1-=CH -C NEG

2+=C H-D POS ; 2-=CH -D NEG

BRI DGE:1+=P OS;2-=N EG

CH- C/D

CH- D

CH-C CH-A

CH-D CH-A

CH-C CH-B

8Ω

4Ω

3.63 Mono mode

SU NON

PMD 1204PQ BX-A

(2).B 2220.GN

DC1 2V —8.0 W

SU NON

PMD 1204PQ BX-A

(2).B 2220.GN

DC1 2V —8.0 W

SU NON

PMD 1204PQ BX-A

(2).B 2220.GN

DC1 2V —8.0 W

SU NON

PMD 1204PQ BX-A

(2).B 2220.GN

DC1 2V —8.0 W

A PRODUCT OF

QPRO TECHNOLOGY

GERMANY

1+=C H-B POS

1-=C H-B NEG

1+=C H-A POS ; 1-=CH -A NEG

2+=C H-B POS ; 2-=CH -B NEG

BRI DGE:1+=POS ;2-=NEG

CH- A/B

CH- B

1+=C H-D POS

1-=C H-D NEG

1+=C H-C POS ; 1-=CH -C NEG

2+=C H-D POS ; 2-=CH -D NEG

BRI DGE:1+=P OS;2-=N EG

CH- C/D

CH- D

SU NON

PMD 1204PQ BX-A

(2).B 2220.GN

DC1 2V —8.0 W

SU NON

PMD 1204PQ BX-A

(2).B 2220.GN

DC1 2V —8.0 W

SU NON

PMD 1204PQ BX-A

(2).B 2220.GN

DC1 2V —8.0 W

A PRODUCT OF

QPRO TECHNOLOGY

GERMANY

1+=C H-B POS

1-=C H-B NEG

1+=C H-A POS ; 1-=CH -A NEG

2+=C H-B POS ; 2-=CH -B NEG

BRI DGE:1+=POS ;2-=NEG

CH- A/B

CH- B

1+=C H-D POS

1-=C H-D NEG

1+=C H-C POS ; 1-=CH -C NEG

2+=C H-D POS ; 2-=CH -D NEG

BRI DGE:1+=P OS;2-=N EG

CH- C/D

CH- D

CH-C CH-A

CH-D CH-A

CH-C CH-B

2+ 1-

CH-C

8Ω

4Ω

2Ω 8Ω

4Ω

2Ω

2+ 1-

CH-A

8Ω

4Ω

2Ω 8Ω

4Ω

2Ω

2+ 1-

CH-D

8Ω

4Ω

2Ω

2+ 1-

CH-B

8Ω

4Ω

2Ω

CH-B

CH-D

CH-B

CH-D

CH-A

CH-C

4 Operating instructions

Before installation, make sure that the power cord is not connected to

the power outlet; the power switch is turned off; the volume knob is

completely closed (counter clockwise to the limit).

4.1 Protection speaker

Clipping not only makess sound distortion, but also damages the tweeter, you can reduce the

input signal to avoid clipping.

Strong sub signal will cause the speaker burned. The high level low frequency signal caused

by the falling of the microphone is a typical sub acoustic signal. One of the following ways to

prevent sub sonic signals should be used:

a、Installing a high pass filter between the mixer and amplifier.

b、Turn on the high pass filter in the mixer. Without affecting the use, the filter frequency is

set as high as possible. For example, for the music signal is set to 35Hz, for the microphone set to

75Hz.

4.2 Attention

In order to achieve the best performance and the highest security, please pay attention:

1、Before use, you need to configure the amplifier, including the input and output lines.

Improper wiring will lead to the equipment can not work properly. For information about connection

and configuration, please refer to the “installation” section of this manual.

2、Be careful when connecting, selecting the input signal and controlling the output level.

This can avoid unnecessary trouble.

3、 Do not connect the ground wire of the input and output cable together . This will form a

ground loop and cause oscillations.

4、Do not connect the output cable to the power supply, Otherwise it may cause electric shock.

5、Without authorization, modify the circuit will be dangerous, and the agents will not provide

any services.

6、Do not use the amplifier in the SIG LED continuous flashing yellow.

7、Do not make mixer overload, otherwise it will send clipping signals to the amplifier. Power

amplifier will accurately reproduce such signals, the speaker may be damaged.

8、Do not use the amplifier under the condition of lower than the nominal load. Too low load

may cause amplifier output protection and premature clipping ,damage the speaker.

9、When the amplifier is turned on, the output port may be fatal.

Important note: our company is not responsible for the damage caused by

excessive use.

PROFESSIONAL POWER AMPLIFIER

4.3 Operation panel

illustration

function

Icon

Power switch ON/OFF control. It is ON ,as “I” is pressed down.

Volume

SIGNAL

As the input signal is greater than "-32dB", LED is green.

POWER As the power supply is working, LED is green.

Adjust the output amplitude of the amplifier.

CL IP

As the output signal is distorted by more than 1%, LED is yellow.

FAULT

As there is protection,LED is red.

SU NON

PMD 1204PQ BX-A

(2).B 2220.GN

DC1 2V —8.0 W

SU NON

PMD 1204PQ BX-A

(2).B 2220.GN

DC1 2V —8.0 W

SU NON

PMD 1204PQ BX-A

(2).B 2220.GN

DC1 2V —8.0 W

SU NON

PMD 1204PQ BX-A

(2).B 2220.GN

DC1 2V —8.0 W

A PRODUCT OF

QPRO TECHNOLOGY

GERMANY

1+=C H-B POS

1-=C H-B NEG

1+=C H-A POS ; 1-=CH -A NEG

2+=C H-B POS ; 2-=CH -B NEG

BRI DGE:1+=POS ;2-=NEG

CH- A/B

CH- B

1+=C H-D POS

1-=C H-D NEG

1+=C H-C POS ; 1-=CH -C NEG

2+=C H-D POS ; 2-=CH -D NEG

BRI DGE:1+=P OS;2-=N EG

CH- C/D

CH- D

SU NON

PMD 1204PQ BX-A

(2).B 2220.GN

DC1 2V —8.0 W

SU NON

PMD 1204PQ BX-A

(2).B 2220.GN

DC1 2V —8.0 W

SU NON

PMD 1204PQ BX-A

(2).B 2220.GN

DC1 2V —8.0 W

A PRODUCT OF

QPRO TECHNOLOGY

GERMANY

1+=C H-B POS

1-=C H-B NEG

1+=C H-A POS ; 1-=CH -A NEG

2+=C H-B POS ; 2-=CH -B NEG

BRI DGE:1+=POS ;2-=NEG

CH- A/B

CH- B

1+=C H-D POS

1-=C H-D NEG

1+=C H-C POS ; 1-=CH -C NEG

2+=C H-D POS ; 2-=CH -D NEG

BRI DGE:1+=P OS;2-=N EG

CH- C/D

CH- D

POWE R

CLIP

SIGN AL

CLIP

SIGN AL

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