Pioneer SC-09TX - Elite AV Network Receiver страница 15 Скачать руководство пользователя

Страница: 15 / 160

Simple Home Theater Guide

For other details, see

Listening modes with different input

signal formats

on page 149. If the display does not

correspond to the input signal and listening mode, check
the connections and settings.

Use the volume control to adjust the volume level.

Turn down the volume of your TV so that all sound is
coming from the speakers connected to this receiver.

Better sound using Phase Control and
Full Band Phase Control

This receiver is equipped with the two types of functions
that correct phase distortion and group delay: Phase
Control and Full Band Phase Control. Activating Full
Band Phase Control is strongly recommended because it
also involves the effects of Phase Control. For details on
each of these two features, refer to the following
explanations.

Using Phase Control

During multichannel playback, LFE (Low-Frequency
Effects) signals as well as low-frequency signals in each
channel are assigned to the subwoofer or other the
subwoofer and the most appropriate speaker. At least in
theory, however, this type of processing involves a group
delay that varies with frequency, resulting in phase
distortion where the low-frequency sound is delayed or
muffled by the conflict with other channels. With the
Phase Control mode switched on, this receiver can
reproduce powerful bass sound without deteriorating the
quality of the original sound (see illustration below).

Phase Control OFF

• Rhythms blurred and difficult to hear

• Bass sound with loss of depth

• Sound of musical instruments with no reality

Phase Control ON

• Rhythms with crystal-like clarity

• Bass sound with no loss of depth

• Sound of musical instruments with superb reality

Phase Control technology provides coherent sound
reproduction through the use of phase matching

for an

optimal sound image at your listening position. The
default setting is on and we recommend leaving Phase
Control switched on for all sound sources.

•

Set the operation selector switch to RCV, then

press PHASE (PHASE CONTROL) to select PHASE
CONTROL.

The PHASE CONTROL indicator on the front panel lights.

Using Full Band Phase Control

The Full Band Phase Control feature calibrates the
frequency-phase characteristics of the speakers
connected.

Standard speakers designed exclusively for audio use
generally reproduce sound with the divided frequency
bands output from a speaker system consisting of
multiple speakers (in case of typical 3-way speakers, for
instance, the tweeter, the squawker (midrange), and the
woofer output sound in the high-, middle-, and low-
frequency ranges, respectively). Though these speakers
are designed to flatten the frequency-amplitude
characteristics across wide ranges, there are cases
where the group delay characteristics are not effectively
flattened. This phase distortion of the speakers
subsequently causes group delay (the delay of low-
frequency sound against high-frequency sound) during
audio signal playback.

Front speaker

Subwoofer

Sound

source

Sound muffled due
to a delay in time

Listening

position

Note

1 • Phase matching is a very important factor in achieving proper sound reproduction. If two waveforms are ‘in phase’, they crest and trough together,
resulting in increased amplitude, clarity and presence of the sound signal. If a crest of a wave meets a trough (as shown in the upper section of the diagram
above), then the sound will be ‘out of phase’ and an unreliable sound image will be produced.

• The

PHASE CONTROL

feature is available even when the headphones are plugged in.

• If your subwoofer has a phase control switch, set it to the plus (+) sign (or 0°). However, the effect you can actually feel when

PHASE CONTROL

is set

on this receiver depends on the type of your subwoofer. Set your subwoofer to maximize the effect. It is also recommended you try changing the

orientation or the place of your subwoofer.

• Set the built-in lowpass filter switch of your subwoofer to OFF. If this cannot be done on your subwoofer, set the cutoff frequency to a higher value.
• If the speaker distance is not properly set, you may not have a maximized

PHASE CONTROL

effect.

• The

PHASE CONTROL

mode cannot be set to

in the following cases:

– When the

PURE DIRECT

mode is switched on.

– When the HDMI audio output parameter is set to

THROUGH

Setting the Audio options