AUDIO MASTER A200, A800, A400, A600, A1000 User Manual

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Page 1

2 CHANNELS POWER AMPLIFIER

USER’S MANUAL

PROFESSIONAL POWER AMPLIFIER

TWO CHANNELS POWER AMPLIFIER

CLASS AB / CLASS H

A SERIES

AUDIO MASTER

Page 2

Imp ortan t preca ution s and app licat ion ran ge For eword

Pro duct br ief int roduc tion

Fro nt pane l funct ion int roduc tion

Rea r panel f uncti on intr oduct ion

Sys tem con necti on case s

Spe cific ation

Mal funct ion eli minat ion

CATALOGUE

1. Read these prescripts.

2. Keep this user manual

3. Pay attention to all the notice

4. Comply with these prescripts

5. Warming:to avoid causing fire or hit by the thunder,don't put the equipment in the rain or in the wet environment.

6. Wiped by dry cloth

7. Don't wall up the intake

8. Don‘t install near the heat headstream like radiator,heat adjust setting,camp stove etc.(including amplifier)

9. Don't make the grounded plug invalidation,this equipment should be connection to the plug through protective grounded plug.

10. Protect the wire from being trampled or extruded,especially the plug,power plug and the connector of it.

11. Please turn off the power amplifier power before take off the electronic wire,signal wire or to change the switching of input mode and cut the limiter.

12. Please use under suitable voltage remarked on the back panel. If the equipment is damaged because of using the wrong voltage,we will charge from service.

13. If one signal is used in more than one power amplifiers,suggest using signal assigner.

14. Don‘t connect the output interface of one channel to the input interface of another channel in the power amplifier. Don’t connect one power amplifier to another one by connecting their output in series or parallel connection.

15. To matching with the power amplifier,the power of the power amplifier should be 50%-100% more than the loudspeaker power.

16. When mend the power amplifier,don‘t connect the probe of the oscilloscope to the output interface under bridge in case of damaging the power amplifier and the oscilloscope.

17. Please use the sequence power if more than one power amplifiers are used at the same time.

CATALOG TWO CHANNEL POWER AMPLIFIER

IMPORTANT PRECAUTIONS AND SIGN EXPLANATION

There are non-insulated parts with dangerous voltage,which can make people get an electricshock in the equipment. So please don’t open the cover. If maintenance is needed,please ask the professional for repair or return to the factory.

Warning:there is important information in this manual users. This product correct volt is 230.

TWO CHANNELS POWER AMPLIFIER

No sound, only with green “on” LED lighting.

Confirm if the gain control is turned on. Confirm if both ends of the input cable is installed correctly. Confirm if to check or connect other

amplifier to present sound source to check.

No sound but signal LED with slight light states that the amplifier has signal output,so sound shall be heard if connect the speaker. Use

other to check the connection of speaker.

No sound with PRT light on

When opening or closing, the amplifier is in temporary silence so as to avoiding acoustical shock. If amplifier is with serious over heat and

in silence as well, keep the amplifier as it is until it turns cool. The fans will run in full speed, but the sound will be recovered in a minute. If

the amplifier touches hot, and the fans don‘t work, maintenance for amplifier is required.

Amplifier drones

Balanced XLR cable is more suitable for long distance operation. If the unbalanced connection(signal-core cable) is adopted, drone may

be a problem since generally the signal-core leads in interference.

According to the different connecting type, drone may appear earlier in the signal chain. If the total power is not too large, it will benefit a lot

to make all plug in the same AC jumper.

Finally, moderate drone sometimes can be reduced throng decreasing amplifier gain and raising high source gain for compensation. But

the sound source must be guaranteed offering large enough sound so as not to cause over load distortion. If the drone isn’t reduced,

perhaps it is from sound source.

Below are the connections when power amplifier needs service:

1. Amplifier smoked or smelled burning.

2. Cabinet has severe indentation and deformation.

3. Amplifier are dipped into the liquid.

4. Internal components loosen

5. The circuit breaker on the rear panel skips out when current increases.

MALFUNCTION ELIMINATION

No response

Make sure that the AC cord is completely inserted in the socket with electricity. Try to use other equipment to test the AC power, like the lamp. Check whether the power switch at the front panel is on or not. If yes, then the amplifier is in need of maintenance.

Amplifier loses voice

If the amplifier over loads too much, fans runs in full speed and increasing temperature will automatically reduces the circuitry and volume so as to

prevent mute error caused by overheat. After the input signal decrease appropriately, amplifier will return to normal gain in 1-2 minutes. The protect

light in the front panel turns off the maintenance is required.

Input of channel 2 seems of no avail. Check whether the mode switch at the rear panel is at the stereo position. With parallel and bridge, input of channel 2 is of no avail.

Sensitivity for both channels is inconsistent

Make sure whether the setting of volume controller is consistent or not.(suggestion:turn the volume to 0 dB at the normal operation.) Make sure

whether the impendence of output speaker is consistent or not.

Amplifier sound is distorted

If the red CLIP LED is flashing, that means the amplifier works beyond the normal rated power. Clip circuit will appropriately reduce the volume to

avoid a serious overload, but if the input signal continues to increase, limiter may be crossed, resulting in increase distortion. If the speaker or the

speaker cable suffers short circuit or malfunction, and the loading is below the normal level, the amplifier will get distortion or no sound, and the red

clip LED light will flicker more, or the protect LED light will be on. The other speakers or cable should be used for inspection.

If impedance of each channel is less than 2 ohm, connecting too much speakers will be very easy to get the amplifier overload and burnt.

If the sound is distorted or not clear, but the red CLIP LED does not flicker, thus there is no distortion within the amplifier. Speaker may be damaged

or input signal gets distortion.

1. Use other equipment to check the whether the speaker is in good condition or not.

2. If the amplifier‘s gain control sets over low, it may lead to input over load and over-loaded operation of input source. Thus reduce the volume until

the distortion disappears, and raise the amplifier gain to idea level.

Generally, it is better to set the gain at the max level(0dB)or close to max level.

3. Check all input connection. Don’t connect two different sound source with the same channel. Suggest using mixer to mix the sound resource.

Page 3

Foreword

TWO CHANNELS POWER AMPLIFIER

Thank you very much for purchasing our products. The two channels professional power amplifier made from our patent technique Class H. It is suitable for small scale performance,Karaoke room, entertainment club, etc. In order to make better operation, please read this manual carefully.

WELCOME

Please make sure if the appearance of the power amplifier was damaged or not during the transportation after you opened the package. Please make sure the preset voltage is matched with your local AC voltage ( please check into it on the real panel of the power amplifier ). We suggest you retain in package in case you need them for further transportation.

TO UNCLOSE THE PACK

The design of products has already taken the safe requirement in to consideration and all the finished products have been tested under the requirement of the government before sale. Users should read the notice in this manual before operation as there is dangerous high voltage and electricity inter the products. It will increase the change of getting shock by the electricity if the product falls down, recess in the appearance,soaked or there were some parts loose internal. If there are problems above,please turn off power immediately and send the defective units to local distributor for service.

IMPORTANT PRECAUTION

INTRODUCTION TECHNOLOGY HIGHLIGHTS

SPECIFICATION

TWO CHANNELS POWER AMPLIFIER

Remark:

1. The power is tested under the condition of 40ms burst,1khz sine wave and 1% THD.

2. Other data is tested under CE / ROSH standard.

3. The power test marked with can‘t be used the power sine wave signal directly to test,or the DC insurance and other components may be broken.

4. The final specification is subject to the user manual.

Model

8 ohm stereo power**

4 ohm stereo power**

2 ohm stereo power**

8 ohm bridge power**

4 ohm bridge power**

Other specification

Frequency Response

THD+N

S/N Ratio

Slew Ratio

Damping Factor

Crosstalk

Input Sensitivity

Input impedance(balance/unbalance)

Voltage gain(sensitivity:8ohm)

Output Circuitry

Cooling

Protection

Connector

Input

Output

Indictor

Front panel

Rear panel

Dimension/weight

Product Dimensions (L*W*H)

Packing Dimensions (L*W*H)

G.W(±5KG)

Power cord

A1000 A1200 A1400

1000Wx2 1200Wx2 1400Wx2

1500Wx2 1800Wx2 2100Wx2

2250Vx2 2400Wx2 2800Wx2

3000W 3600W 4200W

400W 4800W 5600W

20Hz-20KHz±0.3dB

<0.05%@8Ω1KHz

>93dB

35V/µS

>800

>70dB@8Ω1KHz

0.775V/1.0V/1.4V

10KΩ/20KΩ

38dB

Class H Class H Class H

Air flow from front to rear

Soft start,DC, short circuit,over load,Clip limit,over heat,progressive volume

XLR-F,TRS,XLR-F,XLR-M

two red and black binding posts

Front panel indicator:signal,clip,protect,power indicator,bridge,parallel power switch,volume

control knob

Stereo / parallel / bridge switch,input sensitivity switch,low pass filter,high pass filter,

grounding switch

515*485*133(3U)

665*590*203

40KG 42KG 44KG

removable american 13A

AC110V/60HZ

AC230V/50HZ

Our professional power amplifier is adopted stylish design integrated with new-launched high performance Class H amplifier and analog transformer power supply. It is designed for Karaoke room. It adopts high sound quality power transistor, with the characteristic of high power efficiency and good sound.

Low noise figure, suitable for various occasions Power soft start impact resistant, overload, overheat protection, work well and reliable Input and output signal comparison circuit, less chopped, clipping limiting function to protect speaker system Frequency sweep are accurate and natuarl to control speaker system Stereo, bridge, multiple and speakon caron socket input/output, then connect speakers fast and reliably Working state of positive LED light, easy to operation and adjust music.

Page 4

FRONT PANEL FUNCTION INTRODUCTION

FUNCTION INTRODUCTION OF FRONT PANEL

TWO CHANNELS POWER AMPLIFIER

Gai n contr ol cha nnel 1, chann el 2 , Att enuat ion uni t state d:dB For n ormal o perat ion,p lease k eep the con troll er at max (0 db).

Ther mal-T he prot ected o verhe at over load, short c ircui t,dc, softs tart Read y-Ind icato r ON-o pen sit uatio n SIG- signa l indic ation CLIP -clip i ndica tion

Int ake Int er fan wi ll soak t he air fl ow from f rontt o rear. If th e power a mplif ier is us ed with h eavy lo ad, the f an will r un more q uickl y. Remova ble net work mas k make it e asy to cl ean,p lease d on‘t bl ock the int ake,c lean th e netwo rk mask r egula rly.

Han dle

Ins talla tion ho le Ins tall st andar d 19“ca binet ,2U

BACK PANEL FUNCTION INTRODUCTION

Res torab le over -curr ent bre aker 220 v/240 v(15A )or 110v/ 120v( 20A) Whe n there i s sudde n over cu rrent o r sho rt circ uit in th e ampli fier,i t will aut omati cally c ut the AC in put pow er. Ple ase pre ss it aga in,af ter the mal funct ion is se ttled .

AC in put pow er cord s ocket

Bal ance XL R input CH1 ,CH2, i nput co nnect ion Fee t 2 conne ct posi tive po le Fee t 3 conne ct nega tive po le And f eet 1 con nects g round p ole It is r ecomm ended t o adopt t his Way fo r opera tion in l ong or sh ort Dis tance b etwee n the amp lifie r and sig nal sou rce.

Out put mod e selec tor swi tch

Cas e 1 for spe aker co nnect ion,B indin g posts , Nak ed cabl e or term inal, inser t into th e side ho le

TWO CHANNELS POWER AMPLIFIER

SPECIFICATION

A200 A400 A600 A800

250Wx2 400Wx2 600Wx2 800Wx2

375Wx2 600Wx2 780Wx2 1200Wx2

500Wx2 800Wx2 1200Wx2 1600Wx2

700W 1200W 1800W 2400W

1000W 1600W 2400W 3200W

20Hz-20KHz±0.3dB

<0.05%@8Ω1KHz

>95dB >95dB >95dB >93dB

35V/µS

>800

>70dB@8Ω1KHz

0.775V/1.0V/1.4V

10KΩ/20KΩ

38dB

Class AB Class H Class H Class H

Air flow from front to rear

Soft start,DC, short circuit,over load,Clip limit,over heat,progressive volume

XLR-F,TRS,XLR-F,XLR-M

two red and black binding posts

Front panel indicator:signal,clip,protect,power indicator,bridge,parallel power switch,volume

control knob

Stereo / parallel / bridge switch,input sensitivity switch,low pass filter,high pass filter,

grounding switch

500*485*88(2U)

599*568*155

20KG 22KG 24KG 28KG

removable american 13A

AC110V/60HZ

AC230V/50HZ

Model

8 ohm stereo power**

4 ohm stereo power**

2 ohm stereo power**

8 ohm bridge power**

4 ohm bridge power**

Other specification

Frequency Response

THD+N

S/N Ratio

Slew Ratio

Damping Factor

Crosstalk

Input Sensitivity

Input impedance(balance/unbalance)

Voltage gain(sensitivity:8ohm)

Output Circuitry

Cooling

Protection

Connector

Input

Output

Indictor

Front panel

Rear panel

Dimension/weight

Product Dimensions (L*W*H)

Packing Dimensions (L*W*H)

G.W(±5KG)

Power cord

Remark:

1. The power is tested under the condition of 40ms burst,1khz sine wave and 1% THD.

2. Other data is tested under CE / ROSH standard.

3. The power test marked with can‘t be used the power sine wave signal directly to test,or the DC insurance and other components may be broken.

4. The final specification is subject to the user manual.

Pow er swit ch

Page 5

FRONT PANEL FUNCTION INTRODUCTION

TWO CHANNELS POWER AMPLIFIER

SYSTEM CONNECTION CASE 3

TWO CHANNELS POWER AMPLIFIER

Ste reo mod e mov e mode sw itch to ste reo pos ition

SYSTEM CONNECTION INTRODUCTION

STEREO

Res pecti vely co nnect t he left & rig ht sign al sour ce with C H1 and C H2. The o utput t ermin als res pecti vely con nect wi th a spea ker.

Par allel m ode Mov e the mod e switc h to par allel p ositi on.

PARALLEL

The o utput t ermin al of eac h cha nnel Res pecti vely co nnect s peake r The o utput v olume o f each cha nnel is c ontro lled by t he vol ume kno b at the fr ont pan el.

Bri dge mod e Mov e the mod e switc h to bri dge pos ition .

BRIDGE

Con nect th e posit ive ter minal of bo th chan nels to s peake rs. The o utput v olume i s contr olled by CH 1/CH3 v olume k nob at th e fro nt pane l. SPE AKON ca ron soc ket or te rmina l Con necti on mode :+1+2 .

8/4 ohm

FUNCTION INTRODUCTION OF FRONT PANEL(3U)

Gai n contr ol cha nnel 1, chann el 2 , Att enuat ion uni t state d:dB For n ormal o perat ion,p lease k eep the con troll er at max (0 db).

Ther mal-T he prot ected o verhe at over load, short c ircui t,dc, softs tart Read y-Ind icato r ON-o pen sit uatio n SIG- signa l indic ation CLIP -clip i ndica tion

Int ake Int er fan wi ll soak t he air fl ow from f ront to r ear. If th e power a mplif ier is us ed with h eavy lo ad, the f an will r un more q uickl y. Remova ble net work mas k make it e asy to cl ean,p lease d on‘t bl ock the int ake,c lean th e netwo rk mask r egula rly.

Han dle

Ins talla tion ho le Ins tall st andar d 19“ca binet ,3U

BACK PANEL FUNCTION INTRODUCTION

AC in put pow er cord s ocket

Out put mod e selec tor swi tch

Cas e 1 for spe aker co nnect ion,B indin g posts , Nak ed cabl e or term inal, inser t into th e side ho le

Pow er swit ch

Page 6

SYSTEM CONNECTION CASE 1 SYSTEM CONNECTION CASE 2

TWO CHANNELS POWER AMPLIFIERTWO CHANNELS POWER AMPLIFIER

Spe aker co nnect ion at br idge or p arall el outp ut SPE AKON ca ron soc ket or te rmina l Con necti on mode :+1+2 .

Wir ing

Wron g conne ction o f speak er 1

Wron g conne ction o f speak er 2

Don ’t conn ect the o utput t ermin als of bo th cha nnels w ith the s ame spe aker!

8ohm

2oh m

5 6

Inp ut conn ectio n

XLR m ixer

Bal anced c onnec tion Fee t 2 to posi tive po le Fee t 3 to nega tive po le Fee t 1 to grou nding p ole

Unb alanc ed conn ectio n Fee t 2 to posi tive po le &fee t 1 & feet 3 to n egati ve pole . Thi s conne ction i s only ap plied f or shor t dista nce tra nspor t betwe en ampl ifier a nd sign al sour ce,an d may cau se nois e in diffe rent ap plica tion en viron ment. (su ggest n o use)

Spe aker co nnect ion at st ereo or p arall el outp ut SPE AKON ca ron soc ket or te rmina l Con necti on mode :+1-1 .

Wir ing

Eac h chann el can re spect ively c onnec t two 8 o hm spea kers. Spe aker co nnect ion at st ereo or par allel o utput .

8/4/2 o hm

8/4/2 ohm

8oh m