![CONNECTIONS](/images/new-backgrounds/13940/1394029x1.webp)
CONNECTIONS
There are different types of audio and video connections used to con- nect the receiver to the speakers and video display, and to connect the source devices to the receiver. To make it easier to keep them all straight, the Consumer Electronics Association (CEA) has established a
Audio Connections
LeftRight
Front (FL/FR)
Center (C)
Surround (SL/SR)
Subwoofer (SUB)
Surround Back (SBL/SBR)
Digital Audio Connections
Coaxial
OpticalInput Output
Video Connections
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Composite |
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Table 1– Connection Color Guide
Types of Cables
This section will briefly review different types of cables and connections that you may use to set up your system.
Speaker Cables
Speaker cables carry an amplified signal from the receiver’s speaker ter- minals to each loudspeaker. Speaker cables generally contain two wire conductors, or leads, inside plastic insulation. The two conductors are usually differentiated in some way, by using different colors, or stripes, or even by adding a ridge to the insulation. Sometimes the actual wires are different, one being copper red and the other silver.
The differentiation is important because each speaker must be connect- ed to the receiver’s
Always connect the positive terminal on the loudspeaker, which is usually colored red, to the positive terminal on the receiver, which is colored as shown in the Connection Color Guide (Table 1). Similarly, always con- nect the black negative terminal on the speaker to the black negative terminal on the receiver.
Bare wire cables are installed as follows:
1.Unscrew the terminal cap until the
2.Insert the bare end of the wire into the hole.
3.Screw the cap back into place until the wire is held snugly.
1 | 2 | 3 |
Figure 2 –
Subwoofer
The subwoofer is a specialized type of loudspeaker that is usually con- nected in a different way. The subwoofer is used to play only the low frequencies (bass), which require much more power than the other speaker channels. In order to obtain the best results, most speaker manufacturers offer powered subwoofers, in which the speaker contains its own amplifier on board. Sometimes the subwoofer is connected to the receiver using the front left and right speaker outputs, and then the front left and right speakers are connected to terminals on the sub- woofer. More often, a
Although the subwoofer output looks similar to the analog audio jacks used for the various components, it is filtered and only allows the low frequencies to pass. Don’t connect this output to your other devices.
Although doing so won’t cause any harm, performance will suffer.
Figure 3 – Subwoofer
Connecting Source Devices to the AVR
The AVR 145 is designed to process audio and video input signals, playing back the audio and displaying the video on a television or moni- tor connected to the AVR. These signals originate in what are known as “source devices,” including your DVD player, CD player, DVR (digital video recorder) or other recorder, tape deck, game console, cable or satellite television box or MP3 player. Although the tuner is built into the AVR, it also counts as a source, even though no external connections are needed, other than the FM and AM antennas.
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Figure 1 –
The AVR 145 uses
Banana plugs are simply plugged into the hole in the middle of the terminal cap.
In general, separate connections are required for the audio and video portions of the signal. The types of connections used depend upon what’s available on the source device, and for video signals, the capabili- ties of your video display.
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