Simple home theater guide 02, Full band phase control off, Full band phase control on – Pioneer SC-LX90 User Manual

Page 15

Simple Home Theater Guide

This amplifier analyzes the frequency-phase
characteristics of the speakers by calibrating test signals
output from the speakers with the supplied microphone,
therefore flattening the analyzed frequency-phase

characteristics during audio signal playback

– the same

correction is made for a pair of left and right speakers.
This correction minimizes group delay between the
ranges of a speaker and improves the frequency-phase
characteristics across all ranges.

Furthermore, the enhanced frequency-phase
characteristics between channels ensure better

surround sound integration for multichannel setting.

Full Band Phase Control OFF

Sound in the middle- and low-frequency ranges is
delayed against the high-frequency sound due to group
delay.

Full Band Phase Control ON

With the phase distortion corrected, the frequency-phase
characteristics are improved across all ranges.

• Sound with live dynamics

• Sound of musical instruments with superb reality

• Sound so accurately reproduced that you can even

hear the lip movement of the singer

• Speech heard with no loss of clarity

• Surround sound with excellent integration

• Set the operation selector switch to AMP, then

press PHASE (PHASE CONTROL) to select

FULLBAND PHASE.

Both the Phase Control and Full Band Phase Control
functions are switched on. The PHASE CONTROL
indicator lights on the front LCD display.

Note

1 To calibrate and analyze the frequency-phase characteristics of the speakers, follow the procedures in Auto MCACC Setup (see

Automatically setting up

for surround sound (MCACC & Full Band Phase Control) on page 11) or

FULL BAND PHASE CTRL in the System Setup (see Full Band Phase Control on

page 49). Select

ALL when you perform the Auto MCACC Setup with CUSTOM. Upon calibration of the frequency-phase characteristics of the speakers,

the

FULL BAND PHASE CTRL feature is automatically switched on. Note that FULLBAND PHASE cannot be selected unless the frequency-phase

characteristics of the speakers are calibrated.
2 The original characteristics of group delay of the speakers calibrated and the targeted characteristics after correction can be displayed graphically in the
OSD (see

Full Band Phase Control on page 49). Also, when your PC is connected to this amplifier, the original characteristics of group delay of the speakers

calibrated and the corrected characteristics of group delay can be displayed in 3-dimension on your PC (see

Advanced MCACC output using your PC on

page 70).

Tweeter

Midrange

Woofer

Group Delay Characteristics

3 The

FULL BAND PHASE CTRL mode cannot be set to ON in the following cases:

– When headphones are plugged in.
– When the

PURE DIRECT mode is switched on.

– When the HDMI audio output parameter is set to

THROUGH in Setting the Audio options on page 99.

Tweeter

Midrange

Woofer

Group Delay Characteristics

SOURCE

AMP

VOL

SOURCE

AMP

SIGNAL SEL SLEEP

AUDIO

DIMMER

SR+

CLR

SBch

PHASE

iPod CTRL

A.ATT

GENRE HDMI OUT

MCACC

DISP

PHASE

SC_LX90_WY.book Page 15 Wednesday, February 6, 2008 11:49 AM