Handleiding Harman Kardon AVR254 (pagina 18 van 76) (Engels)

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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. See Table 1.

Table 1 – Connection Color Guide

Types of Connections

This section will briefly review different types of cables and connections.

Speaker Connections

Speaker cables carry an amplified signal from the receiver’s speaker

terminals to each loudspeaker. Speaker cables contain two wire conduc-

tors, or leads, inside plastic insulation. The two conductors are usually

differentiated in some way, by using different colors, or stripes, or by

adding a ridge to the insulation. Sometimes the wires are different,

colors e.g. copper-colored and 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 (–), referred to as speaker polarity. It’s important

to maintain the proper polarity for all speakers in the system, or perform-

ance 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 254 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. See Figure 1.

Figure 1 – Binding-Post Speaker 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. Hand-tighten the cap until the wire is held snugly.

Figure 2 – Binding-Post Speaker Terminals With Bare Wires

Subwoofer

The subwoofer is a specialized type of loudspeaker 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. Usually, 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, but sometimes the subwoofer

is connected to the receiver using the front left and right speaker outputs,

as with passive in-wall subwoofers, and then the front left and right

speakers are connected to terminals on the subwoofer.

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 any other devices.

Although doing so won’t cause any harm, performance will suffer.

Figure 3 – Subwoofer

Connecting Source Devices to the AVR

The AVR 254 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 and the

XM antenna module.

Separate connections are required for the audio and video portions of

the signal, except for digital HDMI connections. The types of connections

used depend upon what’s available on the source device, and for video

signals, the capabilities of your video display.

SubwooferPreout

12 3

Audio Connections

Left Right

Front (FL/FR)

Center (C)

Surround (SL/SR)

Surround Back (SBL/SBR)

Subwoofer (SUB)

Digital Audio Connections

Coaxial

Optical

Video Connections

Component Y Pb Pr

Composite

S-Video

HDMI

™

Connections (digital audio/video)

HDMI

Input

CONNECTIONS

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