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WELCOME
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Dear fellow ADCOM product owner,
Welcome to the ADCOM family! For more than twenty years, ADCOM products have delivered
excellent performance and value for customers around the world. Our products are designed by
our experienced and demanding engineering team, built to the highest standards in our factory,
and sold and serviced through dealers, custom installers, and other retailers whose primary goal
is your complete satisfaction.
We know you are anxious to hear your new amplifier in action, but please take a few minutes
to read this owners manual before connecting the amplifier to your system. Because ADCOM
amplifiers can output tremendous power, it is particularly important that you connect your
amplifier to your pre-amplifier and speakers while the amplifier is unplugged and your other
equipment is turned off. This will protect the amplifier and other equipment from potential short
circuits from crossed interconnect or speaker wires while you are working on the connections. In
addition, it is important that you allow for adequate ventilation around your amplifier and other
equipment, since excessive heat buildup can shorten the life of any electronic product, including
the amplifier. Once you have correctly connected your pre-amplifier and speakers to your new
amplifier, you should be able to enjoy many trouble-free years of performance.
We conduct a thorough quality and performance test on each and every amplifier we build in our
factory prior to shipment. In the rare case of a defect that may occur after shipment, we stand
behind our amplifiers with a five year parts and labor warranty. To register for this warranty,
please complete and mail the enclosed warranty card back to ADCOM. Also, please keep a copy of
your sales receipt with the owners manual so you may provide proof of eligibility for the warranty
should the need arise.
We know you will be very happy with the sound and performance of your new amplifier. We
hope you will also consider other ADCOM products, such as our line of pre-amplifiers and DVD
and CD players. In addition, we design and manufacture complementary products such as line
conditioners/surge suppressors and speaker selectors. Please visit our web site, www.adcom.com,
to learn more about our complete line of stereo, home theater, and distributed audio/video
products.
On behalf of all of us at ADCOM, I want to thank you for your selection of our product for your
home or business entertainment system.
Sincerely,
Douglas Klein
President
ADCOM
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TABLE OF CONTENTS
WELCOME . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
SAFETY INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
DESCRIPTION OF UNIT
GFA-7605 FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
GFA-7607 FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
WARRANTY INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . 5
INSTALLATION & HOOKUP
UNPACKING THE GFA-7605/7607 . . . . . . . . . . . . . . . . . . 6
INSTALLING THE GFA-7605/7607 . . . . . . . . . . . . . . . . . . 6
CONNECTING THE GFA-7605/7607 . . . . . . . . . . . . . . . . . 7
OPERATION
FRONT AND REAR PANEL DIAGRAMS . . . . . . . . . . . . . . . . 8
DESCRIPTION OF UNIT: REAR PANEL . . . . . . . . . . . . 9-10
DESCRIPTION OF UNIT: FRONT PANEL . . . . . . . . . . 10-11
CONNECTIONS DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . 11
TROUBLESHOOTING
RESOLVING PROBLEMS . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
CARING FOR YOUR GFA-7605/7607 . . . . . . . . . . . . . . . 13
SERVICE INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . 13
GFA-7605 SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . 14
GFA-7607 SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . 15