ParasoundメーカーJC 3の使用説明書/サービス説明書
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JC 3 Phono Preamplifier OWNER’S GUIDE.
2 Important Safety Instructions The lightning flash with the arrow head symbol w ithin an equilateral triangle is intended to aler t the user to the presence of “dangerous voltage” inside the product that may constitute a risk of electric shock.
3 Table of Contents Introduction ................................................. 4 Placement and Ventilation Guidelines .............................. 5 AC Voltage Selection .......................................... 6 Audio Input and Output Connections .
4 INTRODUCTION Thank You for Choosing Parasound Your new Parasound Halo JC 3 Phono Preamplif ier is the pinnacle of analog audio technology and value engineering. It is legendary designer J ohn Curl’s latest design, carrying on a proud tradition of phono preamp designs dating back to the 1970s.
5 Unpacking Your JC 3 & Placement Guidelines Unpacking Your JC 3 Carefully remove your JC 3 from its shipping carton and locate all the enclosed accessories: • AC power cord • Two trigger wires, one with 3.5 mm mini plugs, one with a 2.5mm and a 3.
6 AC Voltage Selection 115v / 230v AC Voltage Selector Switch This switch is found on the underside of the chassis. Make sure the 115/230V switch is set for the correct AC line (mains) voltage before you plug in the JC 3’s AC power cord. Note: The JC 3 could be seriously damaged if AC Voltage Selector switch is set incorrectly.
7 Connecting your JC 3 Alw ays disconnect the AC cords to y our JC 3 and pow er amplifier(s) before making or changing any input, output or trigger wire connections. Inserting or removing an input or output cable while the JC 3 or power amplifiers are turned on can result in a blast of sound that can damage your loudspeakers.
8 Audio Output Connections The JC 3 Output Jacks connect to the input jacks on your line level preamplifier. Each JC 3 module has two Output jacks, one Balanced XLR jack and one Unbalanced RCA jack. The balanced and unbalanced jacks are active simult aneously.
9 Rear Panel Controls Turn On Options Switch For your convenience, there are two ways the JC 3 can be turned on and off. Manual : Use the front panel On-Off button Auto : When the Turn On Options switch is se t to the auto position, the JC 3 is turned on and off with an external +9 V to + 12 V voltage from your preamplifier.
10 Front Panel Controls On-Off Button Push once to turn on the JC 3. There will be a slight delay as the circuits stabilize and the DC servos settle down. When the JC 3 is tur ned on the blue glow around the On-Off button will be brighter and the red P badge will glow brighter .
11 Frequently Asked Questions Why won’t the JC 3 turn on when I press the On-Off button? - Check the setting of the Turn On Options switch. It must be set to Manual for the front panel On-Off button to function. Why won’t the JC 3 turn on with an external DC trigger? - Check the setting of the Turn On Options switch.
12 Are You Having Difficulty? Repair or Service Call your Parasound dealer first. If the dealer c an’t help you with your problem we encourage you to call Parasound’s Technical Service Department, toll-free at 1-866-770-8324 , Monday - Friday, 8am - 4pm Pacific Time.
13 Specifications Frequency Response 20 Hz - 20 kHz, +/- 0.2 dB THD Distortion: < 0.005% at 20 kHz S/N Ratio (MM ) > 86 dB, input shorted, IHF A-weighted > 80 dB, input shorted, unweighted S/.
14 Parasound Products, Inc. 2250 McKi nnon Ave, San Francisco, CA 94124 415-397-7100 / Fax 415-397-0144 www.parasound.com.
デバイスParasound JC 3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 3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 3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 3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 3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 3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 3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 3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 3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。