Assessments - 4, GPA: 4.3
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' yCÔlVr GFA-7705 Et GFA-7707 S.A.F.E: HIGH CURRENT, MULTI-CHANNEL POWER AMPLIFIERS GFA-7705/07 Features • Precision-matched devices used throughout the signal path. • 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. • ADCOM-Universal pre-prepped chassis and internal power supplies for easy in-field upgradeability from 5 to 7 channel configuration. • Independent thermai-overioad and distortion LEDs for all 5 (to 7) channels. • S.A.F.E.® Circuit: Self Annealing Fuse Equipped-automatic reset protection circuit in the event of speaker or speaker wire dead-short. • 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. • Convenient 12 VDC power ON/OFF triggering. • Heavy gauge, anodized aluminum front panel. • Cooling vents for greater efficiency and cooler operation while driving low impedance loads. Table of Contents Introduction Warranty Information 4 Description of Unit— 20-Amp Device Notification Rear Panel........................................................... Front Panel.......................................................... .4 5 7 Installation & Hookup Unpacking the GFA-7705/07.... Placement of the GFA-7705/07 Quick Connection Diagram..... Connecting the GFA-7705/07... Caring for your GFA-7705/07... 9 9 10 11 12 Troubleshooting Resolving Problems Service Information Specifications....... 13 14 15 3 Introduction Congratulations on your decision to purchase the GFA-7705/07 multi-channel power amplifier. The GFA-7705/ 07 integrates very well with any other home theater system, such as Dolby ProLogic™ or Dolby Digital™. 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. ADCOM Protection Plan (NORTH AMERICA 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 The GFA-7705/07 is a 20-Amp Device. The GFA-7705/07 is high-power, high-current, wide-bandwidth design employing ADCOM’s Fast Analog Transform (F.A.T.) circuitry with direct-coupled Power Rig output stages. All channels are completely monaural from transformer secondaries through the output stages. In order for this product to achieve its actual rated power output on all channels and to avoid repeatedly throwing/popping the related electrical service panel circuit breaker, it is critical that the amplifier be professionally installed on a 20-Amp household AC circuit and outlet, preferably dedicated but at minimum one not shared with other large current-draw appliances or devices. Common 15-Amp household circuits are easily and inexpensively converted to 20 Amp configuration by any high-voltage licensed electrician. For this reason, the GFA-7705/07 ships Factory-equipped with a hard wired, 20-Amp Plug on the AC Power Cord. WARNING: DO NOT DEFEAT THE 20-AMP PLUG OR HARDWIRED AC POWER CORD TO EMPLOY EITHER A 15 AMP OUTLET OR “AUDIOPHILE” TYPE DETACHABLE POWER CORD. DOING SO WILL VOID PRODUCT WARRANTY. MAY DAMAGE THE PRODUCT AND PLACE THE USER AT EXTREME RISKOF INJURY OR DEATH. 4 (2b) (2) (3a) (3b) (4) Rear Panel Inputs (1) The audio inputs for the GFA-7705 and 7707 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; Front L (Left), Center, Front R (Right), Surround L (Left), and Surround R (Right). To insure that the performance designed into the GFA-7705/07 is preserved, you should use the highest quality, shielded audio cables possible. There are many cables which are color-coded and specifically designed for this application. Your Adcom dealer can help select the best cable for your needs. (See Connecting the GFA-7705/07 for more information.) Inputs (1b) Chassis knock-out for future expansion channel-card input jack (GFA-7705 only). Outputs (2) The GFA-7705/07’s connections to the loudspeakers are made through high-grade, 5-way, gold-plated bind...
Este manual também é adequado para os modelos :receptor e amplificador - S.A.F.E GFA-7707 (1.08 mb)