Votes - 2, Average rating: 4 ( )

Manafacture: Adcom File size: 947.66 kb File name: gfa-7300-ug.pdf Language of manual:

inputs 600060 060000 -outputs-1 rear main center | LEFT 0^ sub RIGHT Q AXXMn U Listening/Viewing position Right Front Speaker Surround Right NOTE! Product shown is for reference only, The GFA-7400 and GFA-7300 differ in appearance but have the same basic configuration. CONNECTING THE GFA-7400/7300 Remember, that the Left and Right designations are as you are sitting down in your listening/viewing area. On the rear panel, the inputs and outputs are grouped in 5 bracketed sets, one for each channel. They are as follows: GFA-7300 GFA-7400 RR (Right Rear) .................................. Surround Right (SR) LR (Left Rear)...................................... Surround Left (SL) FR (Front Right)................................... Front Right (FR) C (Center)............................................ Center (C) FL (Front Left)...................................... Front Left (FL) 6 Olnputs: Be certain to connect the RCA cables to the proper RCA-input connector. If the cables are color coded, then use this sequence for the connections: Blue ...................................................FL (Front Left) Red ................................................FR (Front Right) Green .........................................................C (Center) White with Blue Stripe ........................LR (Left Rear) / (Surround Left) White with Red Stripe ...................RR (Right Rear) / (Surround Right) OOutputs: NOTE: The GFA-7400/7300 is “polarity correct”. That is it does not invert phase from input to output. Any positive signals at its inputs will appear as a positive signal at its outputs When connecting the amplifier to the loudspeaker, it is vital to maintain proper polarity (positive to positive, negative to negative). On the GFA-7400/7300, the positive terminal is color coded RED and labeled “+”, and the negative is color coded BLACK and labeled The positive terminal on the speaker will be color coded RED, or will be labeled “+”, “pos”, “positive”, “8 ohms”, or “4 ohms”. The negative terminal on the speaker will be color coded BLACK, or will be labeled “-”, “neg”, negative”, “C”, “Common", “G”, or “ground”. It is recommended that your speaker cables be terminated with “U” type spade connectors. These will give the most contact area insuring long-term reliability. The spade connector should have a maximum width of 0.57 inches and ^ ( an opening width of no less than 0.25” ^ (see diagram on right). j.--/ To properly connect the speaker cable to the binding posts, turn the insulated head of the binding post clockwise until the wire or connector is firmly secured. Finger pressure is sufficient and you should not use pliers or other tools which could damage or over-tighten the bindinq-post assembly. The binding posts, have been designed in such a way that finger pressure is all that is required to cause a “pinching" action among the different metal surfaces to ensure proper connection. It is very important to use the correct size of wire in order to avoid unnecessary loss of amplifier power in the cable, reduction of amplifier damping factor and other undesirable conditions. Sound audio engineering practice suggests the use of at least AWG16, stranded, copper cable. Recommended capacitance of the speaker wire should not exceed 50pF per foot. This insures high frequencies will not be rolled-off. It is suggested that for all the channels follow this chart for speaker lengths and wire gauges. up to 24 feet........................................AWG16 up to 36 feet.........................................AWG14 up to 58 feet.........................................AWG12 If longer runs are needed, it is best to consult with your Adcom Dealer to maximize the performance of your system with your exact conditions. 7 All loudspeakers having a nominal impedance down to 4 ohms can be connected to and driven by the GFA-7400/7300. The amplifier can drive these low-impedance speakers at more than adequate power levels with no difficulty. It should be noted that many loudspeaker systems which are nominally rated at 4 ohms drop in impedance, in some parts of their frequency range, to as low as 2 ohms (and sometimes less). You will not experience difficulties even with these very low impedance loads unless you demand excessively high volumes levels from your system. It is not recommended that you run additional sets of speakers to the GFA-7400/7300. If you choose to add remote speakers in another room, it is strongly suggested that a switching system to disconnect the non-home-theater speakers be incorporated when the surround sound, home-theater mode is in operation. A device such as the Adcom GFS-3, GFS-4 or GFS-6 Speaker Selector is strongly recommended. A Speaker Selector enables you to maintain good sonic integrity while giving you the flexibility to add speakers throughout your house. CARING FOR YOUR GFA-7400/7300 Great care has been taken by ADCOM to ensure that your ampl...

Download now

Please, enter two numbers from picture: