WheneverthePOWERswitchonthefrontpanelistur

nedonandtheamplifierisenergized,

thePOWERLEDwillglow.Ifturningontheamplifie

rdoesnotcausethePOWERLEDto

glow,itmaybeanindicationthattheACLINEFUSE

isblown.UnplugtheACLINECORD

fromtheACwalloutletandturnthePOWER0switch

offandcheckthefuse.Ifthefuseis

blown,replaceitwithoneofthefuseslistedint

 

hetablebelow,plugtheamplifierintoits

ACwalloutletandturnontheamplifier.Ifafter

replacingthefuse,itblowsimmediatelyupon

turningontheamplifier(POWERLEDdoes

not glow),afailedelectronic componentor

otherinternalmalfunctionmustbesuspected.Make

nofurtherattemptsatfusereplacement

or operation of the amplifier.

Refer the problem to competent ADCOM-authorized

service personnel.

 

 

 

NOTE

Beforecheckingorreplacingablownfuse,makecer tainyou UNPLUG THE AC LINE CORD FROM THE AC WALL OUTLET TO PREVENT POSSIBLE ELECTRICAL SHOCK.

AC LINE FUSES

 

BUSSMAN

 

ABC-12/250V

LITTELFUSE

 

3AB314012/250V

SOC

CES612A

/125V

 

 

 

 

NOTE

 

 

 

Thefuseslistedabove,andtheirtimecurrentblow

ingpoints,havebeencarefullyselected

and thoroughly tested to deliver optimal performanc

e while still accomplishing their

protectivefunctions.ReplacetheACLINEFUSEonly

 

withoneofthefuseslistedabove.

DO NOT USE ANY SUBSTITUTE FUSES

WITH

DIFFERENT RATINGS,

TIME-CURRENT CURVES OR VALUES. Failuretoobservethisprecautionmaycause

serious damagetotheamplifiercircuits,

MAY CREATE A FIRE HAZARD, AND WILL

VOID YOUR WARRANTY.

 

 

 

 

 

 

To remove a blown or suspect fuse fromits fuse hol

 

der, use only a number 2 Phillips

screwdrivertopreventdamagetothefuseholder.S

 

implypresslightlyonthefuseholder

capandturncounterclockwise.Thecapwill"pop"o

 

utafterseveralturns.Toreplacethe

fuseholdercap,oncethefusehasbeenreplacedan

 

dproperlyinstalledinitsseatonthe

fuseholder cap, press lightly inward, once the fus

 

eand cap have been inserted in the

fuseholderbody,andturnthecapclockwiseuntil

itisfirmlyseatedinthefuseholderbody.

Be certain not to cause crossthreading of the fuse

holder body and cap to prevent

Page 14
Image 14
Adcom GFA-555MS manual AC Line Fuses Bussman, SOC CES612A, Do not USE ANY Substitute Fuses With Different Ratings

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.