Adcom GFA-7700 Owner'S Manual Download Page 4

Introduction

Congratulations on your decision to purchase the GFA-7700, 5-channel power amplifier. The GFA-7700 

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 (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.

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Summary of Contents for GFA-7700

Page 1: ...GFA 7700 High Current 5 Channel Power Amplifier Owner s Manual...

Page 2: ......

Page 3: ...ut devices Convenient 12 VDC power ON OFF triggering Heavy gauge anodized aluminum front panel Powder coated baked chassis and top cover for greater durability Cooling vents for greater efficiency and...

Page 4: ...onnections to it 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 of...

Page 5: ...kers 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 b...

Page 6: ...Fuse only with one identical in type and rating as printed on the rear panel DO NOT USE ANY SUBSTITUTE FUSES WITH DIFFERENT RATINGS OR VALUES Failure to observe this precaution may cause serious dama...

Page 7: ...hen the GFA 7700 is turned off the Power LED will take some time to fade out completely It may take up to 30 seconds to fully extinguish Additionally the internal power transformer is provided with a...

Page 8: ...has been triggered and the amplifier is inoperative The thermal protection circuitry will typically be triggered by very high power demands into impedances much lower than the amplifier is capable of...

Page 9: ...nal components It is imperative that these vents are not obstructed in any way We recommend that you do not stack other components on top of the GFA 7700 Not only will heat generated by the amplifier...

Page 10: ...designations are as you are sitting down in your listening viewing area On the rear panel the inputs and outputs are grouped in 5 bracketed sets one for each channel They are as follows RS Right Surr...

Page 11: ...rity positive to positive negative to negative On the GFA 7700 the positive terminal is color coded RED and labeled and the negative is color coded BLACK and labeled The positive terminal on the speak...

Page 12: ...y high volumes levels from your system It is not recommended that you run additional sets of speakers on any or all of the amplifiers in the GFA 7700 in order to insure the integrity of the system If...

Page 13: ...solator works only partially or not at all then please read Note 2 to complete the troubleshooting procedure Note 2 Make sure that the power amplifier is at least six inches from the Preamp and or Pro...

Page 14: ...HOULD YOUR UNIT BE SHIPPED TO OUR FACTORY WITHOUT PRIOR AUTHORIZATION OR PACKED IN OTHER THAN ITS ORIGINAL CARTON AND FILLERS For fax inquires please include a return fax or voice number for the reply...

Page 15: ...ohms 0 01 Dynamic Headroom 1 9 dB Signal to Noise Ratio A Weighted 115dB Gain 29dB Input Sensitivity for 1 Watt 0 1 volts for 150 Watts 1 14 volts Input Impedance 50k Damping Factor 20Hz to 20kHz 800...

Page 16: ...8551 East Anderson Drive Suite 105 Scottsdale Arizona 85255 Voice 480 607 2277 Fax 480 348 9876 www adcom com gfa7700_manual_v1...

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