ParasoundメーカーJC 2の使用説明書/サービス説明書
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IMPORT ANT SAFETY INSTRUCTIONS Th e li gh tn in g fla sh w it h th e ar ro wh ea d sy mb ol w it hi n an e qu il at er al t ri an gl e is i nt en de d to a le rt t he u se r to t he p re se nc e of “ da ng er ou s vo lt ag e” i ns id e th e pr od uc t th at m ay c on st it ut e a ri sk o f el ec tr ic s ho ck .
3 Thank Y ou for Choosing Parasound Y our new Parasound ® Halo JC 2 preamplifier represents the pinnacle of analog audio technology . The JC 2 was originally conceived by Parasound president, Richard Schram, as a companion for the famed Halo JC 1 mono power amplifier .
4 T ABLE OF CONTENTS Important Safety Instructions ........................................ 2 Introduction ................................................... 3 Unpacking and Placement Guidelines .................................. 5 Rack Mounting ....
5 UNP ACKING YOUR JC 2 AND PLACEMENT GUIDELINES Unpacking Y our JC 2 Carefully remove your JC 2 from its shipping carton and locate all the enclosed accessories: • Remote control and two AAA batteries • AC power cord • Four trigger wires, two with 2.
6 UNP ACKING YOUR JC 2 AND PLACEMENT GUIDELINES Rack Mounting Y our Parasound JC 2 With its four feet removed, the JC 2’ s front panel height occupies three rack spaces (5 1 / 4 ” or 133 mm. (A single standard rack space occupies 1 3 / 4 ” vertical space.
7 CONNECTING YOUR JC 2 Always disconnect the AC cord to your JC 2 and power amplifier(s) before making or changing any input, output or trigger wire connections. Inserting or removing an input or output cable while the JC 2 or power amplifiers are turned on can result in a blast of sound that can damage your loudspeakers.
8 CONNECTING YOUR JC 2 continued OUTPUT CONNECTIONS There are four pairs of output connections on the JC 2. All of them are active simultaneously . Record Out Jacks The Record Out jacks connect to the Record Input jacks on your audio recorder .
9 CONNECTING YOUR JC 2 continued OTHER CONNECTIONS 12V T rigger Out The re are fo ur 12 vol t t rig ger ou tpu ts. Th ese ca n b e u sed to tu rn on pow er amp lifi ers an d o the r e qui pme nt tha t a re equ ipp ed wit h a uto mat ic tur n-o n i npu ts.
10 OPERA TING YOUR JC 2 Before turning the JC 2 on, recheck all your connections and turn down the volume control to avoid any unpleasant “blasts” that could damage your speakers. T urn On Delay The first time you turn on your JC 2 after connecting its AC power it will automatically mute for 45 seconds with its Mute indicator flashing red.
11 OPERA TING YOUR JC 2 continued We use independent high-resolution Japanese TKD gain control potentiometers to trim the volume of each channel for a balanced sonic image. In most cases you will simply leave the Left and Right knobs fully clockwise where the potentiometer wipers make direct contacts and are out of the circuit.
12 OPERA TING YOUR JC 2 continued/DESIGN OVERVIEW Polarity Normal & Invert Buttons The polarity (or phase) of the Main Outputs is the same as the input unless you press the Invert button to invert the polarity of the Main Outputs 180° relative to the input signal.
13 FREQUENTL Y ASKED QUESTIONS Why is there no sound from the speakers? - Check that AC is live and the “P” badge and an input LED are illuminated. - Check that input and output cables are secure at both ends. - Make sure your JC 2 is switched to the correct input.
14 JC 2 also insure the best possible analog connection to source components which are equipped with balanced outputs. We generally recommend balanced connections if your power amplifiers or source equipment are located more than 10 feet from your JC 2.
15 JC 2 SPECIFICA TIONS Frequency Response 5 Hz – 100 kHz, +0/-3 dB Distortion THD: < 0.003% at 100 Hz THD: < 0.005% at 20 kHz IM: < 0.003% S/N Ratio > 116 dB, input shorted, IHF A-weigh.
rev . 0.91.
デバイスParasound JC 2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：
Parasound JC 2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Parasound JC 2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。Parasound JC 2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。Parasound JC 2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。
Parasound JC 2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Parasound JC 2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、Parasound JC 2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Parasound JC 2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。
