>4DC0M details you can hear GFA-5500 High Current Power Amplifier OWNER’S MANUAL
THE FOLLOWING PRECAUTIONS AND SAFETY INSTRUCTIONS ARE REQUIREMENTS OF UL AND CSA SAFETY REGULATIONS Warning: To reduce the risk of fire or electric shock, do not expose this unit to rain or moisture.
INTRODUCTION Congratulations on your decision to purchase the GFA-5500 Stereo Power Amplifier. 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 connect it. Furthermore, it is a good idea to keep this manual handy for future reference.
UNPACKING Before your new GFA-5500 left our factory, it was carefully inspected for physical imperfections and tested for all electrical parameters as a routine part of ADCOM's systematic quality control. This, along with full operational and mechanical testing, should ensure a product flawless in both appearance and performance. After you have unpacked the GFA-5500, inspect it for physical damage.
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NOTE THE GFA-5500 IS POLARITY CORRECT AND DOES NOT INVERT PHASE. THAT IS, ANY POSITIVE GOING SIGNAL AT ITS INPUT WILL APPEAR AS A POSITIVE GOING SIGNAL AT ITS OUTPUT, Generally speaking, when making connections to the loudspeakers from the amplifier it is very important to use the correct type and size of wire in order to avoid unnecessary loss of amplifier power in the cable, reduction of amplifier damping factor and other undesirable conditions.
AC LINE CORD ® The AC cord provides power to operate all the GFA-5500's circuits. Its plug can be connected to a standard wall outlet provided the outlet supplies a voltage compatible with the "Power" requirements printed on the rear of the GFA-5500. NOTE The GFA-5500’s power cord is supplied with a "polarized" AC plug as required by UL/CSA standards and the National Electrical Code.
POWER LED (D This LED will glow whenever the AC ON/OFF switch is turned on and the GFA-5500 is energized. If the AC LINE FUSE blows the POWER LED will cease to glow. The POWER LED indicates that there is AC voltage being fed to the amplifier, but it does not signify that all the amplifier's circuits are in operation. If, for example, you have blown one or more of the EXTERNAL PROTECTION FUSES, the amplifier will not operate.
THERMAL PROTECTION LEDs ® 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 protection circuit on its respective channel 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 driving at those levels.
CARING FOR YOUR GFA-5500 Great care has been taken by ADCOM to ensure that your amplifier is as flawless in appearance as it is electronically. The front panel Is a heavy gauge, high-grade aluminum extrusion carefully finished and anodized for durability. The chassis, top cover and rear panels are heavy gauge steel, that has been powder coated and baked to ensure a lasting finish.
GFA-5500 SPECIFICATIONS Power Rating (To FTC Requirements) 200 Watts continuous average power into 8 ohms at any frequency between 20Hz and 20kHz with both channels driven at less than 0.18% THD. 350 Watts continuous average power into 4 ohms at any frequency between 20Hz and 20kHz with both channels driven at less than 0.18% THD. IM Distortion (SMPTE) 1 watt to 200 watts into 8 ohms................................................................................. ............................................
>IDCOM 10 Timber Lane Marlboro, NJ 07746 USA Tel: 732-683-2356 Fax: 732-683-9790 www.adcom.com Printed in the USA GFA55/98/V.1.
