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CONNECTIONS
There are different types of audio and video connections used to
connect 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 color-coding standard. Table 1 may be helpful to you as a reference
while you set up your system.
Table 1– Connection Color Guide
Types of Connections
This section will briefly review different types of cables and connections
that you may use to set up your system.
Speaker Connections
Speaker cables carry an amplified signal from the receivers speaker
terminals 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-colored and the other silver.
The differentiation is important because each speaker must be connected
to the receiver’s speaker-output terminals using two wires, one positive
(+) and one negative (–). This is called speaker polarity. It’s important
to maintain the proper polarity for all speakers in the system. If some
speakers have their negative terminals connected to the receiver’s posi-
tive terminals, performance can suffer, especially for the low frequencies.
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 connect
the black negative terminal on the speaker to the black negative terminal
on the receiver.
The AVR 146 uses binding-post speaker
terminals that can accept banana plugs
or bare-wire cables.
Banana plugs are simply plugged into the
hole in the middle of the terminal cap.
Figure 1 – Binding-Post Speaker
See Figure 1.
Terminals With Banana Plugs
Bare wire cables are installed as follows (see Figure 2):
1. Unscrew the terminal cap until the pass-through hole in the collar
is revealed.
2. Insert the bare end of the wire into the hole.
3. Screw the cap back into place until the wire is held snugly.
Figure 2 – Binding-Post Speaker Terminals With Bare Wires
Subwoofer
The subwoofer is a specialized type of loudspeaker that is usually
connected 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 subwoofer.
More often, a line-level (nonamplified) connection is made from the
receiver’s Subwoofer Output to a corresponding jack on the subwoofer,
as shown in Figure 3.
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 146 is designed to process audio and video input signals,
playing back the audio and displaying the video on a television or monitor
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.
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 capabilities of your
video display.
Subwoofer
Pre-out
12 3
+
Audio Connections
Left Right
Front (FL/FR)
Center (C)
Surround (SL/SR)
Subwoofer (SUB)
Digital Audio Connections
Coaxial
Optical Input
Video Connections
Component Y Pb Pr
Composite
S-Video
HDMI
Connections
(switching only)
HDMI
AVR146-OM.qxd 5/10/07 10:16 AM Page 16
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