Adcom GFA-5500 User Manual

THERMAL PROTECTION LEDs (S
The GFA-5500 is provided with a thermal protection circuit which will shut down the amplifier if either heatsink's
temperature reaches 85”C. The THERMAL PROTECTION LEDs will light Whenever the thermal prWL^on drcufon its
tnggered and the amplifier is inoperative. The thermal protection circuitry will typically be
eSSs f demands into impedances much lower than the amplifier is capable o7drivin^at thoL
p „ channel s output through the loudspeaker(s) ceases abruptly, and one or both the THERMAL
h ^ ‘'^^t its heatsink temperature has become unacceptably high and the circuitry is
eneS n note that the POWER LED will remain on and the amplifirwTlI st^be
resume oper?t"oa heatsink(s) drops to a safe operating level, the amplifier will automatically
NOTE
ACTIVATION OF THE THERMAL PROTECTION CIRCUITRY IN THE GFA-5500 IS AN INOICATinM tuat tuiit
AMPLIFIER HAS BEEN OVERDRIVEN OR THAT THE LOAD THE LOUDSPEAKERS ARE PRESENTING TO THP
AMPLIFIER IS UNREASONABLY LOW. IF YOU WISH TO PREVENT
CIRCUITRY. YOU MUST REDUCE THE VOLUME LEVEL DEMANDS OR CORRECT
THE LOAD-IMPEDANCE CONDITION WHICH MAY BE CAUSING ACTIVATION OF THIS CIRCUITRY, OR BOTH
EXTERNAL PROTECTION FUSES (D
There is an additional protection provided to the GFA-5500 in the form of EXTERNAL PROTECTION FUSES for thP nr
are rnade of me ampKeV e«heMoa f^m or
Short term, and are meant to protect not only the loudspeakers, but the power output devices as well. ^
If the amplifier ceases to operate from either one or both channels, particularly during high level passaaes or Iona tPrm
high volume playback, and the POWER LED glows while the THERMAL PROTFotiom i pi^o ^ ^
one or more of the EXTERNAL PROTECTION FUSES are blLn PROTECTION LEDs are out, chances, are that
Your GFA-5500 is designed to activate its protection devices reliably, particularly when the amolifier is rareipsdu
-®<^ a^P'-«er usuallj
WARNING
SUBSTITUTE
serious damage to the amplifier circuits, MAY CREATE A FIRE HAZARD, AND MAY VOID THE WARRANTY^
_EXTERNAL PROTECTION FUSE VALUE/TYPE: 8 AMP AGC/250 VOLT
WARNING
THERE ARE POTENTIALLY LETHAL VOLTAGES WITHIN THE GFA-5500 AMPLIFIFR RFMnx/iwr tuc
COVER GREATLY INCREASES YOUR CHANCE OF INADVERTENTLY EXPOSING YOURSFI F TO^FXTRpmp
DANGER. REFER ALL SERVICING TO QUALIFIED, ADCOM AUTHORIZED no hot
ATTEMPT TO SERVICE, REPLACE, OR REPAIR ANY INTERNAL COMPONENT YOURSELF.
7

Adcom GFA-5500 Specifications

General

Impedance	8 Ω
Audio output channels	2.0 channels
Connectivity technology	Wired
Product color	Black
Power requirements	115 V, 50/60 Hz
Power consumption (typical)	1440 W