Parasoundメーカー2250の使用説明書/サービス説明書
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Model 2250 T wo Channel Amplifier Model 2250 T w o Channel P o w er Amplier O WNER’S GUIDE.
IMPORTANT SAFETY INSTRUCTIONS The lightning flash with the arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of “dangerous voltage” inside the product that may constitute a risk of electric shock.
TABLE OF CONTENTS 1 Unpacking and Accessories .......................................... 2 115v – 230v AC Selector Switch ........................................ 3 Ventilation Requirements ........................................... 3 Rack Mounting .
INTRODUCTION 2 Congratulations and thank you for your purchase of this precision Parasound audio component. The Parasound Model 2250 is the latest generation of popular and proven audio power amplifi- ers dating back to 1981.
AC VOLTAGE, INSTALLATION AND RACK MOUNTING 3 115v - 230v AC Voltage Selector Switch This switch is found on the chassis rear panel. The 115V position of this switch is correct for North America; most other regions require setting it to 230V.
REAR PANEL CONNECTIONS AND CONTROLS 4 Connection Precautions Di scon nec t the AC cord be for e maki ng or ch ang ing an y inp ut, tr igg er, or s peak er wi re con nec tion s. Make sure there is no strain or tension on any wires that could cause them to pull loose.
High Pass Filter Switch The High Pass filter can improve the sound in virtually any installation. It’s called a “high pass” filter because it permits signals higher than 20 Hz and 40 Hz to pass, while preventing signals below these frequencies from passing.
REAR PANEL CONNECTIONS AND CONTROLS continued Correct Speaker Polarity is Important As you connect the speaker wires, you can see that the insulation on one of the two wires in each pair has either printing or a raised ridge. The marking lets you know which wire you con- nected to the positive speaker terminal at its other end.
REAR PANEL CONNECTIONS AND CONTROLS continued For a sin gle pai r of 4 ohm or 8 ohm speak ers the Load Impedan ce switc h may be set to its 4-8 Ohms positi on. The Load Impedan ce Switc h must be set to 2-3 ohms wheneve r the load will be lower than 4 ohms.
REAR PANEL CONNECTIONS AND CONTROLS continued 8 Note: If the controller’s trigger output is a + and - terminal, you can cut the 2.5mm plug off one end of the included trigger wire and attach the bare wires to these terminals.
Power Button Press the Power button once to turn the Model 2250 on, press it again to turn it off. The Power button is inoperative when the Auto Turn On switch is set to Audio or 12V. Note: It is normal for the 2250 Protect indicator to flash briefly right after turn on.
No sound - Check that AC is live. - Is the unit on? Check the setting of the Auto Turn On switch. - Doesn’t turn on with the Auto Turn On - Audio. Try the 12V trigger instead. - Check that input cables and speaker wires are secure at both ends. - Make sure the control preamp/receiver is switched to the correct input.
Call your Parasou nd deal er firs t. If the dealer can’t help you with your problem we enc ourage you to call Parasound’ s Techni cal Ser vice Department , toll- free at 1-866 -770-8324 , Monday - Friday , 8am - 4pm Paci fic tim e. We can suggest other diagno stic tests you can easily perform .
Continuous RMS Power Output 20 Hz – 20 kHz, Both Channels Driven 25 0 wat ts x 2 , 8 Ω 38 5 wat ts x 2 , 4 Ω 25 0 wat ts x 2 , 2 Ω Continuous RMS Power Output 20 Hz – 20 kHz, Bridged Mono 600 watts, 8 Ω 600 watts, 4 Ω Current Capacity 45 amps peak per channel Frequency Response 20 Hz - 50 kHz, +0/-3 dB, 1 watt Dynamic Headroom 1.
Notes: CONNECTION AND SETUP NOTES 13.
W e i nv i te yo u t o v is i t w ww . pa r as o un d .c o m f or th e m os t u p- t o- d at e i nf o rm a ti o n on y our u ni t a nd t o f ind o ut a bou t oth er Pa ras oun d pro duc ts.
デバイスParasound 2250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 2250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 2250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 2250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 2250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 2250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 2250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 2250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 2250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。