Manuale d’uso / di manutenzione del prodotto High-Current Power Amplifier GFA-555se del fabbricante Adcom
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OWNER’S MANUAL GF A-555se High-Current Power Amplifi er.
2 Congratu lations on your pur chase of the Adcom GF A- 5 55se Y o u h ave ma de a w i s e c ho ice th at w ill re wa rd y o u w ith e xcepti o nally a ccu r ate m u sic al so u n d re p ro du c ti o n fo r yea rs to come .
T ABLE OF CONTENTS LETTER FROM THE ADCOM TEAM ................. 2 SAFETY INFORMA TION ............................ 4 DESCRIPTION OF UNIT GF A-555se FEA TURES ............................. 5 W ARRANTY INFORMA TION ......................... 5 INST ALLA TION & HOOKUP UNP ACKING THE GF A-555se .
• Read all the saf et y and oper ating instructio ns before con- nec ting or using this unit. • Retain this notic e and the owner’ s manual for f uture refer - ence . • All warnings on the u nit and in i ts op erating instru ctions should be adhere d to.
GF A-555se FEA TURES • P recision-matched devices used throughout the signal path. • 60,000 μ F of power supply- fi lter capacitance for greater reserve capacity . • Independent power supplies for each channel. • Fewer gain stages improve signal reproduction accuracy .
INTRODUCTION Congratulations on your decision to purchase the GF A-555se power ampli fi er . By use of updated components in the classic ADCOM GF A-555 design, we have reestablished our heritage of high performance and audiophile quality at the greatest possible value.
7 CONNECTING THE GF A-555se When connecting the ampli fi er to the loudspeaker , it is vital to maintain proper polarity (positive to positive, negative to negative). On the GF A-555se , the positive terminal is color coded RED and labeled “+”, and the negative is color coded BLACK and labeled “-”.
T o set the ampli fi er in bridged mono operation, fl ip the STEREO/BRIDGED input switch into the BRIDGED position. When in the bridged mono mode, input to the ampli fi er is made only through the LEFT input jack. The connection to the RIGHT input jack should be removed since the right-channel input portion of the ampli fi er is inoperative.
thermal protection channel model GFA-555se power L R high current power amplifier instantaneous distortion alert FRONT P ANEL ( 7 ) ( 10 ) ( 9 ) ( 8 ) REAR P ANEL ( 3 ) ( 1 ) ( 5 ) ( 4 ) ( 2 ) (1) Inp.
10 DESCRIPTION OF UNIT : REAR P ANEL (1) Inputs (unbalanced) The audio inputs for the GF A-555se 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 channel; Left and Right.
11 (6) Mode Switches For normal stereophonic mode of operation, the STEREO/BRIDGED input switch should be set to STEREO. Otherwise, the ampli fi er will operate in the bridged mono input mode by which you will amplify only the left channel through both outputs of the ampli fi er .
12 RESOL VING PROBLEMS Use the chart below to solve common situations that don’t require professional attention. If the steps stated in POSSIBLE SOLUTION do not resolve your problem, then please contact your ADCOM Dealer or call the ADCOM Customer Service Department.
For Fax inquires, please include a return Fax number for the reply. When calling or writing about your GF A-555se, 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 any communications to us, please include a daytime phone number where we may reach you.
GF A-555se SPECIFICA TIONS 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..04% THD. 300 Watts continuous average power into 4 ohms at any frequency between 20Hz and 20khz with both channels driven at less than 0.
Input Sensitiv ity 200 watts into 8 ohms ................................................................ 1.75V rms 1 watt into 8 ohms .................................................................. 130mV rms Damping Factor 2OHz to 2OkHz ..........
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Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il Adcom High-Current Power Amplifier GFA-555se è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del Adcom High-Current Power Amplifier GFA-555se - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Adcom High-Current Power Amplifier GFA-555se imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Adcom High-Current Power Amplifier GFA-555se ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Adcom High-Current Power Amplifier GFA-555se, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del Adcom High-Current Power Amplifier GFA-555se.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Adcom High-Current Power Amplifier GFA-555se. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Adcom High-Current Power Amplifier GFA-555se insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
