Adcom S.A.F.E. GFA-7705 User Manual
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Adcom S.A.F.E. GFA-7705 User Manual

Adcom S.A.F.E. GFA-7705 User Manual

S.a.f.e. high current, multi-channel power amplifiers
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GFA-7705
&
GFA-7707
S.A.F.E.
®
HIGH CURRENT, MULTI-CHANNEL
POWER AMPLIFIERS

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Summary of Contents for Adcom S.A.F.E. GFA-7705

  • Page 1 GFA-7705 & GFA-7707 S.A.F.E. ® HIGH CURRENT, MULTI-CHANNEL POWER AMPLIFIERS...

  • Page 3: Table Of Contents

    • 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-fi eld upgradeability from 5 to 7 channel confi guration.

  • Page 4: Introduction

    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.

  • Page 5: Rear Panel

    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 fi ve channels; Front L (Left), Center, Front R (Right), Surround L (Left), and Surround R (Right).
  • Page 6 Warranty may be voided. 12VDC Triggering (3a) ADCOM has provided the installer the ability to control the OFF/ON function of the GFA-7705/07 by a 12Volt DC output jack on the rear of certain pre-amplifi ers and tuner pre-amplifi ers. When using this feature the front panel Power Switch must be left in the in “on”...

  • Page 7: Front Panel

    Power LED (6) This LED will glow when the On/Off Switch (5) is turned on and the GFA-7705/07 is energized. The Power LED indicates that there is AC voltage being fed to the amplifi er, but it does not signify that all the amplifi er’s circuits are in operation.
  • Page 8 Activation of the Thermal Protection circuitry in any of the amplifi ers in the GFA-7705/07 is an indication that the amplifi er has been over driven or that the load the loudspeakers are presenting to the amplifi er is unreasonably low.

  • Page 9: Installation & Hookup Unpacking The Gfa-7705/07

    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-7705/07. Not only will heat generated by the amplifi er affect the performance of equipment stacked on top of the GFA-7705/07, but the free fl ow of air through the ventilating slots in the amplifi er may be partially obstructed.

  • Page 10: Quick Connection Diagram

    Connecting the GFA-7705/07 Remember, that the Left and Right designations are as you are sitting down in your listening/viewing area. On the rear panel, the inputs and outputs are grouped in 5 or 7 bracketed sets, one set for each channel.
  • Page 11 Outputs (2) NOTE: The GFA-7705/07 is “polarity correct”. That is, it does not invert phase from input to output. Any positive signals at its inputs will appear as a positive signal at its outputs.

  • Page 12: Caring For Your Gfa-7705/07

    CARING FOR YOUR GFA-7705/07 Great care has been taken by ADCOM to ensure that your amplifi er is as fl awless in appearance as it is electronically. The front panel is a heavy-gauge, high-grade aluminum extrusion carefully fi nished and anodized for durability.

  • Page 13: Troubleshooting Resolving Problems

    “75Ω Ground Loop Isolator” before reconnecting the line. You should check with your ADCOM Dealer to obtain one. If the “75Ω Ground Loop Isolator” works only partially or not at all, then please read Note 2 to complete the troubleshooting procedure.

  • Page 14: Service Information

    For fax inquires, please include a return fax or voice number for the reply. When calling or writing about your GFA-7705/07, 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 the event the unit must be returned to our factory for service, you will be instructed on the proper procedure when you call or write for a Return Authorization.

  • Page 15: Specifi Cations

    8.5” (216mm) x 17” (432mm) x 17.5” (444.5mm) ......Maximum Dimensions (H x W x D) 9 3/8” (238mm) x 17” (432mm) x 18.5” (470mm) ....Unit Weight 69.5 lb. (31.5 kg) (GFA-7705)................Unit Weight 78.2 lb. (35.5 kg) (GFA-7707)................Weight, Packed 81.5 lb. (37 kg) (GFA-7705)................
  • Page 16 8541 East Anderson Drive Scottsdale, Arizona 85255 Voice: (480) 607-2277 Fax: (480) 348-9876 www.adcom.com gfa7705/07_manual_v1...

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S.a.f.e. gfa-7707

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