AshlyメーカーMFA-8000の使用説明書/サービス説明書
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MF A-8000 MF A-6000 Power Amplifier Operating Manual ASHL Y AUDIO INC. 847 Holt Road W ebster , NY 14580-9103 Phone: (716) 872-0010 T oll-Free: (800) 828-6308 Fax: (716) 872-0739 Internet: http://www .
Operating Manual - MF A-8000 and MF A-6000 Power Amplifier 2 T abl e Of Contents 1 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2 UNP ACKING . . . . . . . . . . . . . . . . . . . . . .
3 Operating Manual - MF A-8000 and MF A-6000 Power Amplifier Caut ion: This power amplifier can produce danger ous output voltage levels, high power levels, and high sound pr essure levels in loudspeakers.
Operating Manual - MF A-8000 and MF A-6000 Power Amplifier 4 1. INTRODUCTION The MF A Series amplifiers achieve the very high ener gy levels used in today’ s professional sound systems, carefully maintaining control and accuracy while deliv- ering high power to modern loudspeaker configurations.
5 Operating Manual - MF A-8000 and MF A-6000 Power Amplifier peaking at the clipping level, the following AC line cur- rent capacities are recommended for system design pur- poses: Load MF A-6000 MF A-8000 Idle 1 Amp 1.2 Amps 8 Ω × 2 7.5 Amps 10 Amps 4 Ω × 2 10 Amps 15 Amps 2 Ω × 2 15 Amps 20 Amps T able 3.
Operating Manual - MF A-8000 and MF A-6000 Power Amplifier 6 6. FRONT P ANEL FEA TURES 6.1 Power Switch When the unit is switched on there is a 2 second delay , during which time the PROTECT and LIMIT cir- cuits will activate. The load is disconnected during this power -up sequence, and the input signal is attenuated.
7 Operating Manual - MF A-8000 and MF A-6000 Power Amplifier 6.5 Thermal Indicator This yellow LED indicates that the internal tem- perature of the amplifier is too high in one or more places. Intensity of the LED is proportional to temperature above normal.
Operating Manual - MF A-8000 and MF A-6000 Power Amplifier 8 7. REAR P ANEL FEA TURES 7.1 Inputs The standard input panel of the MF A series amps is equipped with balanced 1/4" tip-ring-sleeve (TRS) phone jacks, balanced XLR jacks, and balanced screw- terminal inputs.
9 Operating Manual - MF A-8000 and MF A-6000 Power Amplifier Input Gr ound The CHASSIS GROUND terminal is internally connected to the chassis, the AC earth ground, and the power amplifier ’ s signal ground. The INPUT GROUND terminal is tied to the XLR pin 1 and the 1/4" jack sleeve.
Operating Manual - MF A-8000 and MF A-6000 Power Amplifier 10 7.6 Speaker Outputs - Speakon Connectors Neutrik Speakon connectors are provided to con- nect with the Neutrik NL4FC 4-conductor plug.
11 Operating Manual - MF A-8000 and MF A-6000 Power Amplifier Limiter In/Out Le v el Ch a nnel 2 (+) (-) In p u t G roun d C ha ssi s Ground (-) (+) Le v el Limiter In/Out Chann el 1 ( M ono ) CL-2 POW ERCARD Input Optio n Stereo Li mi ter 10 0 1 2 3 4 5 6 9 01 0 1 4 5 6 7 8 9 L im it L im it Ch .
Operating Manual - MF A-8000 and MF A-6000 Power Amplifier 12 9. TYPICAL APPLICA TIONS 9.1 Stereo Operation 9.2 Parallel Mono Operation (Both switches out, both inputs used, both level controls used, .
13 Operating Manual - MF A-8000 and MF A-6000 Power Amplifier Sophisticated power amp monitoring circuits de- tect any abnormal conditions which may cause damage to the amplifier or speakers. A highly accurate clip de- tector illuminates the CLIP LED at the onset of clipping.
Operating Manual - MF A-8000 and MF A-6000 Power Amplifier 14 1 1 . TROUBLESHOOTING TIPS 1 1.1 No Audio Output Power switch not lit: Line fuse is blown or power outlet is dead. Power switch is lit but no LEDs lit: Ther e is no input signal applied or input level contr ols ar e off.
15 Operating Manual - MF A-8000 and MF A-6000 Power Amplifier 12. DIMENSIONS.
Operating Manual - MF A-8000 and MF A-6000 Power Amplifier 16 13. SPECIFICA TIONS 13.1 Output Power Per channel, both channels driven at 1KHz, < .1% THD, 120V AC 60Hz MF A-8000 MF A-6000 8 Ω : 75.
17 Operating Manual - MF A-8000 and MF A-6000 Power Amplifier 14. W ARRANTY POLICY W e thank you for your expression of confidence in Ashly products. The unit you have just purchased is pro- tected by a limited five year warranty . T o establish the warranty , you must first complete and mail the warranty card attached to your product.
Operating Manual - MF A-8000 and MF A-6000 Power Amplifier 18.
19 Operating Manual - MF A-8000 and MF A-6000 Power Amplifier.
Operating Manual - MF A-8000 and MF A-6000 Power Amplifier ASHL Y AUDIO INC. 847 Holt Road W ebster , NY 14580-9103 Phone: (716) 872-0010 Fax: (716) 872-0739 T oll Free (800) 828-6308 Internet: http://www .ashly .com/ 1997 by Ashly Audio Corporation.
デバイスAshly MFA-8000の購入後に(又は購入する前であっても)重要なポイントは、説明書をよく読むことです。その単純な理由はいくつかあります:
Ashly MFA-8000をまだ購入していないなら、この製品の基本情報を理解する良い機会です。まずは上にある説明書の最初のページをご覧ください。そこにはAshly MFA-8000の技術情報の概要が記載されているはずです。デバイスがあなたのニーズを満たすかどうかは、ここで確認しましょう。Ashly MFA-8000の取扱説明書の次のページをよく読むことにより、製品の全機能やその取り扱いに関する情報を知ることができます。Ashly MFA-8000で得られた情報は、きっとあなたの購入の決断を手助けしてくれることでしょう。
Ashly MFA-8000を既にお持ちだが、まだ読んでいない場合は、上記の理由によりそれを行うべきです。そうすることにより機能を適切に使用しているか、又はAshly MFA-8000の不適切な取り扱いによりその寿命を短くする危険を犯していないかどうかを知ることができます。
ですが、ユーザガイドが果たす重要な役割の一つは、Ashly MFA-8000に関する問題の解決を支援することです。そこにはほとんどの場合、トラブルシューティング、すなわちAshly MFA-8000デバイスで最もよく起こりうる故障・不良とそれらの対処法についてのアドバイスを見つけることができるはずです。たとえ問題を解決できなかった場合でも、説明書にはカスタマー・サービスセンター又は最寄りのサービスセンターへの問い合わせ先等、次の対処法についての指示があるはずです。