Loading...
/DCOM
details you can hear
G FA-7000
High Current THX®
5-Channel
Power Amplifier
L U C A S F I L M
THX
OWNER’S MANUAL
THE FOLLOWING PRECAUTIONS AND SAFETY INSTRUCTIONS ARE REQUIREMENTS OF UL AND CSA SAFETY REGULATIONS
Warning: To reduce the risk of fire or eiectric shock, do not expose this unit to rain or moisture.
A DO NOT OPEN 'f
CAUTION
RISK OF ELECTRIC SHOCK
AVIS: RISQUE DE CHOC ELECTRIQUE-NE PAS OUVRIR
The graphic symbol of a lightning flash with an arrow point within a triangle signifies that there is dangerous voltage within the unit and it poses a hazard to anyone removing the cover to gam access to the interior of the unit Only qualified service personnel should make any such attempt.
The graphic symbol of an exclamation point within an equilateral triangle warns a user of the device that it is necessary to refer to the instruction manual and its warnings for proper operation of the unit
Do not place this unit on an unstable cart, stand, tripod, bracket, or table The unit may fall, causing serious injury to a child or adult, and serious damage to the unit Use only with a cart, stand, tripod, bracket, or table recommended by the manufacturer, or sold with the unit Any mounting of the device should follow the man ufacturer’s instructions, and should use a mounting ac cessory recommended by the manufacturer
Read all the safety and operating instructions before connecting or using this unit
Retain this notice and the owner’s manual for future reference
All warnings on the unit and in its operating instructions should be adhered to
All operating and use instructions should be followed
Do not use this unit near water, for example, near a bathtub, washbowl, kitchen sink, laundry tub, in a wet basement, or near a swimming pool
The unit should be installed so that its location or position does not interfere with Its proper ventilation For example, it should not be situated on a bed,
sofa, rug, or similar surface that may block the ventilation openings, or placed in a built-in installation, such as bookcase or cabinet, that may impede the flow of air through its ventilation openings
The unit should be situated away from heat sources such as radiators, heat registers, stoves, or other devices (including amplifiers) that produce heat
The unit should be connected to a power-supply outlet only of the voltage and frequency marked on its rear panel
The power-supply cord should be routed so that it is not likely to be walked on or pinched, especially near the plug, convenience receptacles, or where the cord exits from the unit
Clean unit only as recommended in its instruction manual
The |
power-supply |
cord of |
the unit should be unplugged from the wall outlet |
when It IS to be unused for a long period of time
Care should be taken so that objects do not fall, and liquids are not spilled, into the enclosure through any openings
This unit should be serviced by qualified service personnel when A The power cord or the plug has been damaged, or
B Objects have fallen, or liquid has been spilled, into the unit, or C The unit has been exposed to ram, or liquids of any kind, or D The unit does not appear to operate normally, or exhibits a
marked change in performance, or
E The device has been dropped, or the enclosure damaged
DO NOT ATTEMPT SERVICING OF THIS UNIT YOURSELF. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
ATTENTION
POUR PRÉVENIR LES CHOCS ÉLECTRIQUES NE PAS UTILISER CETTE FICHE POLARISÉE AVEC UN PROLONGATEUR, UNE PRISE DE COURANT OU UNE AUTRE SORTIE DE COURANT, SAUF SI LES LAMES PEUVENT ÊTRE INSÉRÉES À FOND SANS EN LAISSER AU CUNE PARTIE À DÉCOUVERT
CAUTION
TO PREVENT ELECTRIC SHOCK DO NOT USE THIS POLARIZED PLUG WITH AN EXTENSION CORD, RECEPTACLE OR OTHER OUTLET UN LESS THE BLADES CAN BE FULLY INSERTED TO PREVENT BLADE EXPOSURE
CAUTION
POWER LINES
Any outdoor antenna must be located away from all power lines.
OUTDOOR ANTENNA GROUNDING
If an outside antenna is connected to your tuner or tuner-preamplifier, be sure the antenna system is grounded so as to provide some protection against voltage surges and built-up static charges. Section 810 of the National Electrical Code, ANSI/NFPA No. 70-1984, provides information with respect to proper grounding of the mast and supporting structure, grounding of the lead-in wire to an antenna discharge unit, size of grounding conductors, location of antenna discharge unit, connection to grounding electrodes, and requirements for the grounding electrode.
a. Use No.10 AWG (5.3 mm=^) copper. No.8 AWG (8 4 mm^) aluminum, No.17 AWG (1 0 mm“) copper-clad steel or bronze wire, or larger, as a ground wire.
b Secure antenna lead-in and ground wires to house with stand-off insulators spaced from 4-6 feet (1.22-1.83 m) apart.
c Mount antenna discharge unit as close as possible to where lead-in enters house
d. Use jumper wire not smaller than No.6 AWG (13.3 mm“) copper, or the equivalent, when a separate antenna-grounding electrode is used. See NEC Section 810-21 (j).
EXAMPLE OF ANTENNA GROUNDING AS PER NATIONAL ELECTRICAL CODE INSTRUCTIONS
CONTAINED IN ARTICLE 810 - RADIO AND TELEVISION EQUIPMENT
POWER LINES
STANDOFF
INSULATORS, b
ANTENNA
LEAD-IN WIRE
|
TO EXTERNAL ANTENNA |
POWER SERVICE GROUNDING |
TERMINALS OF RADIO RECEIVER |
|
|
ELECTRODE SYSTEM |
GROUND WIRE, a.b |
(e g interior metal water pipe) |
GROUND CLAMPS |
|
|
BONDING JUMPER, d |
|
|
OPTIONAL ANTENNA GROUNDING |
|
ELECTRODE DRIVEN 8 FEET (2 44 M) INTO |
|
THE EARTH IF REQUIRED BY LOCAL |
|
CODES SEE NEC SECTION 810-21 (f) |
NOTE TO CATV SYSTEM INSTALLER
This reminder is provided to call the CATV system installer’s attention to Article 820-22 of the National Electrical Code that provides guidelines for proper grounding and, in particular, specifies that the cable ground shall be connected to the grounding system of the building, as close to the point of cable entry as practical
GFA-7000 FEATURES
Precision-matched devices used throughout the signal path.
120,000 pF of power supply-filter capacitance for greater reserve capacity. Independent power supplies for each channel.
Fewer gain stages improve signal reproduction accuracy.
Custom toroidal power transformer provides better regulation and greater peak current capability.
Independent thermal-overload and distortion LEDs for all 5 channels.
High quality, gold-plated 5-way binding posts.
High quality, gold-plated RCA jacks.
Large independent, internal heatsinks for greater cooling capability of output
devices.
Heavy gauge, anodized aluminum front panel.
Powder-coated, baked chassis and top cover for greater durability. Cooling vents for greater efficiency and cooler operation while driving low impedance loads.
Home THX® standard DB-25 connector to simplify installation Made in the USA
TABLE OF CONTENTS |
|
INTRODUCTION |
|
WHAT IS HOME THX®?........................................................ |
2 |
WARRANTY INFORMATION................................................. |
2 |
DESCRIPTION OF UNIT |
|
REAR PANEL......................................................................... |
3 |
FRONT PANEL...................................................................... |
5 |
INSTALLATION & HOOKUP |
|
UNPACKING THE GFA-7000................................................ |
7 |
PLACING THE GFA-7000...................................................... |
7 |
QUICK CONNECTION DIAGRAM......................................... |
8 |
CONNECTING THE GFA-7000.............................................. |
9 |
CARING FOR YOUR GFA-7000.......................................... |
10 |
TROUBLESHOOTING |
|
RESOLVING PROBLEMS................................................... |
11 |
SERVICE INFORMATION................................................... |
12 |
SPECIFICATIONS............................................................... |
13 |
T H X . THX®, and Home THX® are registered trademarks of Lucasfilm Ltd
Dolby ProLogic® and Dolby AC-3® are registered trademarks of Dolby Laboratories Licensing Corp
INTRODUCTION
Congratulations on your decision to purchase the GFA-7000, Home THX® certified, 5- channel power amplifier. Not only is the GFA-7000 certified for Home THX® systems, but it will also integrate with any other home theater system, such as Dolby ProLogic® or Dolby AC-3®, You have made a wise choice that will reward you with exceptionally accurate and musical sound reproduction for years to come. To realize the full potential of your new amplifier, please read these operating and installation instructions thoroughly before attempting to make any connections to it.
WHAT IS HOME THX® ?
Home THX® is the system developed by Lucasfilm Ltd. to maximize the accuracy of film soundtracks in a home environment. It is important as soundtracks and their related special effects become a greater and greater part of the whole film viewing and listening experience.
In order for a component to display the Home THX® system mark, it has to conform to the strict series of standards that were investigated and defined during the 1980's by Tom Holman of Lucasfilm Ltd. A home theater surround system utilizing Home THX® certified components throughout, will give the most accurate re-creation of the original sound tracks put on the film in the creative “dubbing stage” by its director, conductor and sound designer. Approved Home THX® components insure all the necessary improvements to deliver the intended effects of a film in home theater sound reproduction. The benefits are:
•Clearer dialog
•Precise front-stage sound localization
•Expanded depth of the sound field
•Extended and smooth frequency response
•Wider dynamic range
•Smoother sound transition among channels
The Adcom GFA-7000 amplifier is designed not only to meet these standards, but to exceed them and deliver the most accurate reproduction of Home THX®-encoded films.
ADCOM PROTECTION PLAN (USA ONLY)
ADCOM offers the enclosed valuable Limited Warranty. Please read the details on the Warranty Card carefully to understand the extent of the protection offered by the Warranty, its reasonable limitations, and what you should do in order to obtain its benefits. Be sure to verify that the serial number printed on the rear panel matches the serial number on the outer carton. If any number is altered or missing, you should notify us immediately in order to ensure that you have received a genuine ADCOM product which has not been opened, mishandled, or tampered with in any way. Always retain your original sales receipt as a proof of purchase.
DESCRIPTION OF UNIT
O RR, LR, R, C, L Inputs
The audio inputs for the GFA-7000 are through high-quality, gold-plated RCA jacks to minimize high-frequency losses, noise, etc. They will accept standard RCA-type plugs, one for each of the five channels; Left (L), Center (C), Right (R), Left Rear (LR), and Right Rear (RR). To insure that the performance designed into the GFA-7000 is preserved, you should use the highest quality audio cables possible. There are many cables which are Home THX® certified, color-coded and specifically designed for this application. Your Adcom dealer can help select the best cable for your needs. (See CONNECTING THE GFA-7000 for more information).
O RR, LR, R, C, L Outputs
The GFA-7000’s connections to the loudspeakers are made through high-grade, 5-way, gold-plated binding post terminals. There are two terminals for each speaker, which are colored RED for the positive (+) output and BLACK for the negative (-) output.
The binding posts will accept a variety of connector types; the most secure and prevalent of these is the “U”-type spade connectors (at least 0.25” wide and maximum width of 0.57”),.
The terminal will also accept bare wire (up to AWG10) and “banana” type plugs (single or dual). Pin connectors are not recommended for use with Home THX® equipment. (See CONNECTING THE GFA-7000 for more information).
O DB-25 Multichannel Audio Input Connector
Input connections may be made with the optional DB-25 computer-type connector, which is a Home THX® certified option when your Home THX® controller is provided with a similar output connector. Using this type of connecting cable would override the need to use the RCAtype inputs (O). This mode of connection retains the same high level of signal transfer, simplifies the job significantly and insures automatic, correct connections to all channels.
Loading...