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Adcom GFA-7607 manual

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Table of contents for the manual

  • Page 1

    OW NE R’ S MA NU AL G F A - 7 6 0 5 & G F A - 7 6 0 7 Mu lt ic ha nn el H ig h- Cu rr en t P ow er A mp li e rs[...]

  • Page 2

    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. Our products are desig ned by our experienced and de manding en gineering team, bui lt to the highest standards in our factory , and sold [...]

  • Page 3

    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-7605 FEA TURES .............................. 5 GF A-7607 FEA TURES .............................. 5 W ARRANTY INFORMA TION ......................... 5 INST ALLA TION & HOOKUP UNP ACKING THE[...]

  • Page 4

    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. The grap hic symbol of a lightni ng ash with an arro w poin t with in a t riangl e sign ies t hat th ere is da ngerou s volta ge with in the u [...]

  • Page 5

    GF A-7605 FEA TURES • P recision-matched devices used throughout the signal path. • 100,000 µF of power supply-lter capacitance to optimize transient response. • Independent power supplies for each channel. • Fewer gain stages improve signal reproduction accuracy . • Custom toroidal power transformer provides better regulation and gre[...]

  • Page 6

    INTROD UCTION Congratul ations on your decision to purc hase the GF A-7605 or GF A-76 07 multichannel power ampl ier . The GF A-7605 and GF A-7607 have been desig ned to be high performance and musically accur ate in a congur ation specicall y designed to integrate with any home theater processor . Y ou have made a wise choice that will re[...]

  • Page 7

    7 CONNEC TING T HE GF A-7605 /7607 When connecting the amplier to the loudspea ker , it is vital to maintain proper polarity (positive to positive, negative to negative). On the GF A-7605/76 07, the posit ive term inal is color coded RED and labeled “+,” and the negative is color coded BLACK and labeled “-.” The positive terminal on the [...]

  • Page 8

    G F A 7607 distortion alert > LF C RF RS R B thermal protection > LB L S GF A-76 07 FRO NT P AN EL ( 6 ) ( 8 ) ( 9 ) ( 7 ) GF A-76 07 REA R P ANEL ( 2 ) ( 1 ) ( 5 ) ( 4 ) ( 3 ) (1) Input Jacks (2) Output Binding P osts (3) I2V DC T rigger (4) AC F use (5) AC P ower Cord (6) On/Off Switch (7) P ower LED (8) Thermal Protection LEDs (9) Distorti[...]

  • Page 9

    9 DESC RIPTIO N OF U NIT : REA R P ANEL (1) Inputs The audio inpu ts fo r the GF A-7 605 a nd GF A-760 7 are thr ough h igh-q ualit y , g old-p lated RCA jac ks to minim ize hig h-freq uency loss es, no ise, etc. They will acce pt sta ndard RCA-t ype p lugs, one f or ea ch of the c hanne ls. T o ins ure th at th e per forman ce de signe d into the [...]

  • Page 10

    10 Since the fuse has a cera mic body and you ca nnot visu ally examin e the fus e element it is the refore sug gested th at you r eplace it with an id entical s ubstitute or bring t he fuse to yo ur ADCOM dealer so they may check its integrity . T o replac e the fus e, insert it in the back of t he fuse-ho lder cap. P lace the cap into t he fuse-h[...]

  • Page 11

    Left Front Right Surround Right Back Left Back Left Surround Center Right Front curren t phase a ngle or th e reactan ce of the loudspeake rs which the ampli er is dri ving. Som etimes, wh en the ampli er is in use, the L EDs may o ccasionall y icker during high vol ume listen ing, part icularly i f you are driving low im pedances. This ?[...]

  • Page 12

    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. Any pro blems not covered h ere should be brough t to the att[...]

  • Page 13

    For Fax inquires, please include a return Fax number for the reply. When calling or writing about your GF A-7605/7607, 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. In the event the u[...]

  • Page 14

    GF A-7605 SPECIFICA TIONS Power Rating (To EIA/CEA-490-A Requirements) 125 Watts continuous average power per channel into 8 ohms at any frequency between 20Hz and 20kHz with all channels driven at less than 1.00% THD. 175 Watts continuous average power per channel into 4 ohms at any frequency between 20Hz and 20khz with all channels driven at less[...]

  • Page 15

    GF A-7607 SPECIFICA TIONS Power Rating (To EIA/CEA-490-A Requirements) 125 Watts continuous average power per channel into 8 ohms at any frequency between 20Hz and 20kHz with all channels driven at less than 1.00% THD. 175 Watts continuous average power per channel into 4 ohms at any frequency between 20Hz and 20khz with all channels driven at less[...]

  • Page 16

    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 .adcom.com GF A7605_07_manual_v1[...]