Directed Electronicsメーカー250dの使用説明書/サービス説明書
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OWNER’S MANUAL Model 250d.
© 1999 Directed Electronics, Inc CONGRA TULA TIONS Thank you for choosing a Directed Audio power amplifier . Directed has been the leader in high-quality and innovative security products in the U.
1 © 1999 Directed Electronics, Inc T ABLE OF CONTENTS High-powered car audio systems may produce sound pressure levels that exceed the threshold at which hearing loss may result. They may also impair a driver’ s ability to hear traffic sounds or emergency vehi- cles.
© 1999 Directed Electronics, Inc 2 INST ALLA TION GUIDELINES 1. Please read the owner’ s manual carefully before you install the ampli- fier . 2. Disconnect the battery ground terminal prior to making any elec- trical connections.
© 1999 Directed Electronics, Inc INST ALLA TION GUIDELINES (continued) 3 is generated. For low impedance speaker applications or restricted ventilation installations, an external cooling fan may be advisable.
4 © 1999 Directed Electronics, Inc 1. GROUND TERMINAL - connect this terminal to the car chassis with a short heavy gauge wire, DO NOT CONNECT TO THE NEGA TIVE TERMINAL OF THE CAR BA TTERY or to fact.
5 © 1999 Directed Electronics, Inc 1. RCA OUTPUT JACKS - use these jacks to route the input signal to another amplifier . 2. RCA INPUT JACKS - accepts line- level outputs from head units or signal sources at voltages from 200 mV to 8 volts. 3. GAIN ADJUSTMENT - controls the gain (input sensitivity) of the amplifier .
6 © 1999 Directed Electronics, Inc SPEAKER WIRING DIAGRAMS Speaker nominal impedance must be at least 2 ohm. Amplifier parallels the speaker terminals internally . Single subwoofer connection T wo subwoofer connection Parallel speaker nominal impedance must be at least 2 ohm.
7 © 1999 Directed Electronics, Inc CROSSOVER SETTINGS AND GAIN ADJUSTMENT Y our Directed Audio power amplifier needs to be adjusted carefully to achieve maximum performance.
8 © 1999 Directed Electronics, Inc SPECIFICA TIONS RMS continuous power driven into 4 ohms from 20 to 250 Hz with less than 0.4% T otal Harmonic Distortion @ 14.4 VDC RMS continuous power driven into 2 ohms from 20 to 250Hz with less than 0.6% T otal Harmonic Distortion @ 14.
9 © 1999 Directed Electronics, Inc Directed Electronics, Inc. (DEI ® ) promises to the original purchaser , to replace this product should it prove to be defective in workmanship or material under n.
• SINGLE AND DUAL VOICE COIL SUBWOOFERS • COAXIAL SPEAKERS • COMPONENT SPEAKER SYSTEMS © 1999 Directed Electronics, Inc • Vista, CA 92083 • All Rights Reserved G45012 9/99 Always use a DEI .
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Directed Electronics 250d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Directed Electronics 250d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。Directed Electronics 250d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。Directed Electronics 250d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。
Directed Electronics 250d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Directed Electronics 250d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、Directed Electronics 250d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Directed Electronics 250d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。