AdcomメーカーGFA7807の使用説明書/サービス説明書
ページ先へ移動 of 16
OW NE R’ S MA NU AL G F A - 7 8 0 5 & G F A - 7 8 0 7 Mu lt i- ch an ne l Hi gh -C ur re nt P owe r A mp li e rs.
W E L C O M E 2 Dear fe llow ADCOM produc t owner , W elcome to the ADCOM fami ly! For more than twenty years, A DCOM products hav e delive red excelle nt perform ance and value for custom ers around the wor ld.
T A B L E O F C O N T E N T S WELCOME ........................................ 2 SAFETY INFORMA TION ........................... 4 DESCRIPTION OF UNIT GF A-7805 FEA TURES .............................. 5 GF A-7807 FEA TURES ...........................
THE FOLLOWING PRECAUTIONS AND SAFETY INSTRUCTIONS ARE REQUIREMENTS OF UL AND CSA SAFETY REGULATIONS Warning: To reduce the risk of re or electric shock, do not expose this unit to rain or moisture.
GF A-7805 FEA TURES • P recision-matched devices used throughout the signal path • 112,000 µF of power supply-lter capacitance to optimize transient response • Independent power supplies for.
INTROD UCTION Congratul ations on your decision to purc hase the GF A-7805 or GF A-78 07 multichannel power ampl ier . The GF A-7805 and GF A-7807 have been designed to be high performance and musically accurate in a congurati on specicall y designed to integrate with any audio pre-am plier .
G F A 7807 distortion alert > LF C RF RS R B thermal protection > LB L S GF A-78 07 FRO NT P AN EL ( 6 ) ( 8 ) ( 9 ) ( 7 ) GF A-78 07 REA R P ANEL ( 2 ) ( 1 ) ( 5 ) ( 4 ) ( 3 ) (1) Inp ut J acks.
8 DESC RIPTIO N OF U NIT : REA R P ANEL (1) Inputs The GF A- 7805 a nd GF A 78 07 ha ve bot h bal anced and u nbal- anc ed inp uts f or ea ch cha nnel. Th e unb alance d con necti on is made v ia th e gol d plat ed RC A ja ck and the balan ced co n- nec tion i s mad e via the X LR in put c onnect ion.
9 autom atically a nd normal operation will resu me. If you are t o avoid tr ipping the thermost at in the transforme r contin ually , you must reduce t he sound l evel deman ds, correc t the loa d impedanc e of the loudspeake rs, or bot h.
Model: GFA-7807 Power Amplifier Power consumption (max): XXXX W serial number CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN WARNING: To reduce the risk of fire or electric shock, do not expose this appliance to rain or moisture. AVIS: Risque de choc electrique- ne pas ouvrir.
11 CONNEC TING T HE GF A-7805 /7807 T O YOUR SPEAKE RS When connecting the amplier to the loudspea ker , it is vital to maintain proper polarity (positive to positive, negative to negative). On the GF A-7805/78 07, the posit ive term inal is color coded RED and labeled “+,” and the negative is color coded BLACK and labeled “-”.
RESO L VING P ROBLEMS Use th e chart b elow to so lve commo n situatio ns that do n’t requi re profess ional att ention. If the step s stated i n POSSIBLE SOLUT ION do not resolve your probl em, then p lease con tact your ADCOM Deal er or cal l the ADCOM Cu stomer Ser vice Depart ment.
For Fax inquires, please include a return Fax number for the reply. When calling or writing about your GF A-7805/7807, be sure to note and refer to its serial number as well as the date of purchase and the dealer from whom it was purchased. In any communications to us, please include a daytime phone number where we may reach you.
GF A-7805 SPECIFICA TIONS Power Rating (To EIA/CEA-490-A Requirements) 300 Watts continuous average power per channel into 8 ohms at any frequency between 20Hz and 20kHz with all channels driven at less than 1.
GF A-7807 SPECIFICA TIONS Power Rating (To EIA/CEA-490-A Requirements) 300 Watts continuous average power per channel into 8 ohms at any frequency between 20Hz and 20kHz with all channels driven at less than 1.
ADCOM A division of Klein T echnology Group, LLC 8551 East Anderson Drive, Suite 105 Scottsdale, Arizona 85255 V oice: (480) 607-2277 Fax: (480) 348-9876 http://www .
デバイスAdcom GFA7807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:
Adcom GFA7807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Adcom GFA7807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。Adcom GFA7807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。Adcom GFA7807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。
Adcom GFA7807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Adcom GFA7807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、Adcom GFA7807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Adcom GFA7807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。