Instruction/ maintenance manual of the product GFA7807 Adcom
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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 .
An important point after buying a device Adcom GFA7807 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Adcom GFA7807 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Adcom GFA7807 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Adcom GFA7807 you will learn all the available features of the product, as well as information on its operation. The information that you get Adcom GFA7807 will certainly help you make a decision on the purchase.
If you already are a holder of Adcom GFA7807, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Adcom GFA7807.
However, one of the most important roles played by the user manual is to help in solving problems with Adcom GFA7807. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Adcom GFA7807 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
