B&KメーカーAV2500 Series IIの使用説明書/サービス説明書
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B & K Components Ltd. P/N 12695.
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Page 1 Safety Precautions Page 2 Purpose and function Page 3 Design and constr uction Page 3 Features Page 4 Rear panel v iew Page 4 Rear panel descr iption Page 5 Control muti ng Pag e 5 - 6 Level co.
Page 2 WA RNING: TO PREVENT FIRE OR SHOCK HA ZA RD, DO NOT EXPOSE THIS UNIT TO RA IN OR MOISTURE. The lightning fl ash with arr owhead, within an equil ateral tr iangle, is i ntended to alert the user.
Page 3 The AV2500 series II is a compact, very efficient, five channel pow er ampli fier. It is designed to be used in al l types of audio or audi o/video sy stems. The term versatile is almost adequate to descri be the vari ance of operational modes the AV2500 series II is capable of providi ng.
Page 4 - Efficient high curr ent transformer for improved dy namics. - More accur ate and three dimensional r eproduction of source material. - Prov ides short term pr otection from accidental shorti ng of output devic es and protection from thermal over load.
Page 5 1. A C fuse holder - Holds the AC Line fuse. This fuse is an 8 Amp / 250 Volt Slow Bl ow fuse. Replace w ith same ty pe and val ue fuse only. 2. A C Input receptacle - For attaching the suppl ied AC pow er cord to the amp lifier. 3. Speaker outputs - For connecting the speaker s to the amplifier.
Page 6 If the control function is desired, each uni t in the system must r emain connected at all times and the control must be enabled. To enabl e the control function, the CTRL ENABLE button must be out for each controllabl e amplifier in the sy stem.
Page 7 Example: W hen using 4 ohm and 8 ohm speakers together, the 4 ohm may sound louder then 8 ohm at a g iven v olume level. The l evel contr ols on the ampli fier are used to match the speakers volume level. Clockwise w ill increase the output. Counter clockwise will decrease the outp u t.
Page 8 Five w ay binding posts ar e provi ded. One pair for each channel. They are desig ned to accept a banana-type pl ug or spade l ug connector (s hown below ) and are color coded for easy identificati on. The red (+) post should alw ays be connected to the speaker s (+) jack.
Page 9 In order to g ain access to the internal bus str ucture, you must firs t remove the top cover . Turn the amplifier so the rear panel is facing y our. The jumper modules may be seen on the circuit boar d just behind the lev el controls . Below i s the default setup for the AV2500 series II amplifier.
Page 10 W ith the jumper plug set to this locati on on a channels jumper module w ill only l et the signal pr esent at that channel’s input to appear at it output. Along w ith being channel 2's input, it i s used as the input to the rig ht bus and the right sour ce for the ‘L+R BUS’ .
Page 11 The AV2500 series II ’ s five output channels may be parall eled (mono) to combine the output current for all channel s. This feature allow s the amplifier to i ncrease its apparent output current. To use, pl ace the source gr oup jumper for all channels on the ‘L BUS’ jumper terminal.
Page 12 The AV2500 series II may operate w ith 2 channels br idged to dri ve a hig h impedance speaker. To use, place the source g roup jumper for both channels on the ‘ L BUS’ jumper terminal . Place the vol ume group jumper for both channels on the ‘NO VOL’ jumper termi nal.
Page 13 There will most like ly be a n umbe r of cable s in volved in the installatio n of your ho m e entertainment sy stem. Pre-planni ng is essenti al in order to max imiz e system efficiency .
Page 14 Connect the wi res from your speakers to the appropri ate output on the amplifier. It is absolutely essential that y ou observ e correct polar ity i n these connections. Double check all connecti ons. Plug the ampli fier’s pow er cord into the AC pow er source.
Page 15 PROBLEM POSSIBLE CA USE POSSIBLE SOL UTION No sound 1. Power cord not plugged in. 1. Reconnect power cord. (‘on’ LED not illuminated) 2. Power off at AC source. 2. Check AC switch or fuse. 3. AC power inlet fuse blown 3. Check for shorts or or faulty.
Page 16 Power rating: 8 ohms 60 watts @ 1 kHz 4 ohms Not recommended Frequency response 5 Hz - 45 kHz Input sensitiv ity 0.77 Volts THD (S+ N) 0.09 % @ 1 kHz Input impedance 33.2 k ohms Damp in g fa ctor 80 Current ( peak to peak) 16 Amps Slew r ate 14 V / ) sec Dynami c headroom 1.
Page 17 B&K Components Ltd., referred to herein as B&K, warrant s your B&K equipment against all defects in material and workmanship for a period of five years from the date of purchase. This warranty applies only to t he original purchaser and only to equipm ent in normal residential use and service.
B&K Com ponents, Lt d. 2100 O l d Union Road Buf f al o, New York 14227 716-656- 0023 www. bkc omp. co m.
デバイスB&K AV2500 Series II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：
B&K AV2500 Series II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B&K AV2500 Series II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。B&K AV2500 Series II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。B&K AV2500 Series II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。
B&K AV2500 Series II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B&K AV2500 Series II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、B&K AV2500 Series II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B&K AV2500 Series II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。
