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1. LED INDICATOR

PROTECT LED

Protect LED light with the protection circuit activated:

1. After switching-on for approx. 3 seconds(in-rush delay) 

(in-rush 

회로작동

)

1. LED

2. CHANNEL VOLUME

PROTECT LED

1. 전원 스위치를 켠 후 3초동안 LED가 켜지게 됩니다.

2. 스피커 출력단에 직류 전압이 생기면 보호회로가 작동하며 LED가 켜지게

3. 앰프가 과열이 되면 보호회로가 작동하며 LED가 켜지게 됩니다.

CLIP LED

SIGNAL LED

POWER LED

출력 신호에 일그러짐이 발생하면 LED가 켜지게 됩니다.

출력 신호의 유무를 표시하여 주는 LED입니다.

앰프에 전기가 공급되고 있슴을 알려주는 LED입니다.

각 채널의 음량을 조절하는 볼륨입니다.

3. POWER SWITCH 

※ 주의

브릿지 모노 운용시에는 채널A 볼륨으로 작동되며 채널 B볼륨은 반 시계방향
으로 돌려 놓고 운용하십시오.

기기에 전원을 공급하는 스위치 입니다.

켜십시오.

정도 기다린 후 방열판이 식으면 전원을 꺼주시기 바랍니다.

1. 앰프의 전원을 켤때는 주변 음향기기들을 먼저 켠 후에 앰프의 전원을

2. 앰프의 전원을 끌때는 볼륨을 반시계 방향으로 끝까지 돌리고, 2 3분

3. If the amplifier is overheated. 

2. If a DC voltage is present at a speaker output. 

됩니다.

F

RONT PANEL CONTROLS 

(전면기능)

1

2

3

2

SIGNAL LED 

SIGNAL LED light if the output signal exceeds 100mW.

POWER LED

POWER LED as operating light.

2. CANNEL VOLUME

Control for the output level of channel A,B.

3. POWER SWITCH

Provides power to the unit.

switched on. 

2~3 minutes before switching off.

For the internal fans continue to cool the unit otherwise the 

 amplifier maybe damaged.

NOTE:

1. To avoid loud switching noises, always switch on the power

amplifier in an amplifier system after all other units have been

2. At first turn the volume fully counterclockwise. Then wait approx

CLIP LED light with overdrive. 

CLIP LED

Summary of Contents for JMA-300A

Page 1: ...WWW JEDIA COM POWER AMPLIFIER JMA 300A JMA 600A JMA 900A...

Page 2: ...AUTION AVIS FEATURES SAFETY INSTRUCTIONS RONT PANEL CONTROLS EAR PANEL CONTROLS NSTALLATIONS ONNECTIONS PECIFICATIONS LOCK DIAGRAM C F R I C S B...

Page 3: ...ct the amplifier after reading of O P manuals Connect each connection of amplifier perfectly if not it maybe caused hum damage electric shock in case of mis connecting To prevent electric shock do not...

Page 4: ...2 3 2 SIGNAL LED SIGNAL LED light if the output signal exceeds 100mW POWER LED POWER LED as operating light 2 CANNEL VOLUME Control for the output level of channel A B 3 POWER SWITCH Provides power to...

Page 5: ...E SELECTOR BRIDGE MONO STEREO Both channels operate separately for stereo or 2 channel operation speaker impedance for each channel at least 4 Both channels are connected as a bridge for a speaker imp...

Page 6: ...4 JMA JMA I NSTALLATION...

Page 7: ...ability for damaged loads resulting from careless amplifier use or deliberate over powering How to connect stereo 2 CHANNEL mode connect the output wiring as shown To put the amplifier into stereo mod...

Page 8: ...B Ch A BRIDGED Ch A PROFESSIONAL AUDIO MIXER 8 4 4 2 TRIPAC Series or STAGE PRO MIXER TRIPAC BRIDGE MONO STEREO 1 2 3 INPUT FROM SOURCE SHIELD 1 2 3 SHIELD INPUT FROM SHIELD BALANCED UNBALANCED Input...

Page 9: ...8 ohms into 4 ohms into 8 ohms bridged Output power 2 x 128W 2 x 175W 1 x 350W 2 x 250W 1Khz THD 0 1 2 x 380W 1 x 760W 2 x 350W 2 x 490W 1 x 980W JMA 300A JMA 600A JMA 900A JMA 600A JMA 900A JMA 300A...

Page 10: ...ER SPEAKER PROTECTOR D C SERVO CHANNEL 2 AMPLIFIER POWER TRANS NEGATIVE FEEDBA CK DRIVER DRIVER TEMP SEN VCC PROTECT INDICATOR OUTPUT SIGNAL INDICATOR CH1 OUTPUT CH2 OUTPUT CH1 BRIDGED MONO OUTPUT FAN...

Page 11: ...POWER AMPLIFIER JMA 300A JMA 600A JMA 900A OPERATING INSTRUCTIONS 4M OP202200...

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