PhoneorFaxi nquiries: MondaythroughFriday
9:00AMto4:00PMArizonaTime
PhoneNumber:4806072277
email:info@ ADCOMusa.com

NOTE

 

 

 

 

 

ACTIVATIONOFTHETHERMALPROTECTIONCIRCUITRYINT

HEGFA555msISAN

INDICATION THATTHEAMPLIFIERHASBEENOVERDRIVENO RTHATTHELOAD

THELOUDSPEAKERS ARE PRESENTING TO THE AMPLIFIER IS UNREASONABLY

LOW. IF YOU WISH TO PREVENT RECURRENT ACTIVATION OF

THE THERMAL

PROTECTION CIRCUITRY, YOU MUST REDUCE THE VOLUME LE

VEL DEMANDS,

RECTIFY THE LOADIMPEDANCE CONDITION WHICH MAY

BE C

AUSING

ACTIVATION OF THIS CIRCUITRY, INSTALL AN AUXILIARY

FAN OPTION OR, IN

EXTREMECASES,UNDERTAKEALLTHREE.

 

 

 

 

 

 

 

 

 

 

 

CARING FOR YOUR GFA-555ms

 

 

 

 

 

Great care has been taken by ADCOM to assure that y

our amplifier is as flawless in

appearanceasitiselectronically.Thefrontpanel

isaheavygauge,highgradealuminum

extrusioncarefullyfinished and anodized for durab

ility. The chassis, top cover andrear

panelareofheavygaugesteel,bothpaintedandba

 

ked. Ifthefrontpanel,toporsides

shouldbecomedustyorfingerprinted,theycanbec

leanedwithasoftIintlesscloth,slightly

dampenedwithaverymilddetergentsolutionornon

ammoniaglasscleaner.

 

NOTE

DO NOT SPRAY OR USE LIQUIDS OF ANY KIND ON THE SURF ACES OF THE GFA—555se.DONOTEXPOSETHEAMPLIFIERTORAIN,WAT ERORMOISTUREOF ANYKIND.

SERVICING-North America

 

 

ADCOM has a Technical Service Department to answer

questions pertinent to the

installationandoperationofyourunit.Intheeve

ntofdifficulty,pleasecontactusforprompt

advice.Ifyourproblemcannotberesolvedthrough

ourcombinedefforts,wemayreferyou

toanauthorizedrepair agency,or authorizereturn

oftheunittoourplant. Toaidusin

directingyoutoaconvenientservicestation,itw

ouldbehelpfulifyouindicatewhichmajor

cityisaccessibletoyourhome.

 

 

Pleaseaddressmailinquiriesto:

ADCOMUSA/J&BDISTRIBUTION

POBOX54096

PHOENIX,AZ85078

U.S.A.

Page 17
Image 17
Adcom GFA-555MS Activationofthethermalprotectioncircuitryint, Indication Thattheamplifierhasbeenoverdriveno Rthattheload

GFA-555MS specifications

The Adcom GFA-555MS is a high-performance power amplifier that has established a reputation for its reliability and excellent sound quality. This amplifier, developed by Adcom, an American audio company known for producing high-quality audio components, is often sought after by audiophiles and professionals alike for its unique features and robust build.

One of the standout characteristics of the GFA-555MS is its impressive power output. With a continuous power rating of 200 watts per channel into 8 ohms, and even more when driving lower impedances, it provides ample power to drive a wide variety of speakers. This ensures that users can enjoy dynamic sound reproduction, whether they are listening to music at moderate volumes or cranking it up for a party.

The GFA-555MS is designed using a high-current, Class AB topology, which strikes a balance between efficiency and sound fidelity. This design allows for clean, detailed audio reproduction while minimizing distortion. The amplifier is renowned for its ability to handle complex musical passages and reproduce them faithfully, making it a favorite among music lovers who appreciate the nuances of their favorite recordings.

Another notable feature is its advanced thermal management system. The GFA-555MS is equipped with substantial heat sinks and a robust power supply that allows it to operate efficiently without overheating. This is particularly beneficial for sustained listening sessions or when driving demanding speaker loads.

In terms of connectivity, the GFA-555MS offers various input options, including RCA and XLR connections, making it versatile enough to integrate into a range of audio systems. This flexibility is complemented by its exceptional build quality, with a solid chassis that not only enhances durability but also minimizes vibrations that could interfere with sound quality.

The amplifier also includes additional features such as DC protection circuitry and a comprehensive output stage protection system. These safeguards help protect both the amplifier and the connected speakers from potential damage due to short circuits or overheating.

Overall, the Adcom GFA-555MS stands out in the realm of audio amplifiers. Its combination of power, sound quality, and advanced technologies make it a preferred choice for both casual listeners and serious audiophiles. Whether for home theater setups or music playback, the GFA-555MS delivers performance that is hard to match, making it a true classic in the audio world.