Other Problems When Using The Auto Mcacc Setup; Better Sound Using Phase Control - Pioneer VSX-819H Operating Instructions Manual

5 minute guide
Other problems when using the Auto
MCACC Setup
If the room environment is not optimal for the
Auto MCACC Setup (too much background
noise, echo off the walls, obstacles blocking
the speakers from the microphone) the final
settings may be incorrect. Check for household
appliances (air conditioner, fridge, fan, etc.),
that may be affecting the environment and
switch them off if necessary. If there are any
instructions showing in the front panel display,
please follow them.
• Some older TVs may interfere with the
operation of the microphone. If this seems
to be happening, switch off the TV when
doing the Auto MCACC Setup.

Better sound using Phase Control

This receiver's Phase Control feature uses
phase correction measures to make sure your
sound source arrives at the listening position in
phase, preventing unwanted distortion and/or
coloring of the sound (see illustration below).
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.
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.
• 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 to ON 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 ON in the following cases:
– When the PURE DIRECT mode is switched on.
– When the MULTI IN input is selected.
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).
P
Front speaker
H
A
S
E
C
O
N
T
R
O
L
Sound
O source Subwoofer
F
F
Front speaker
P
H
A
S
E
C
O
N
T
R
O
Sound
L
source Subwoofer
O
N
Phase Control technology provides coherent
sound reproduction through the use of phase
1
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.
RECEIVER RECEIVER
INPUT SELECT SOURCE
ZONE 2
RECEIVER
ON/OFF TV CONTROL
INPUT
BD TV DVR
• Press RECEIVER, then press PHASE to
switch on phase correction.
Listening
position
?
Listening
position
HDD DVD VCR
DISPLAY
1 2 3
S.RETRIEVER EQ CH SELECT SLEEP
4 5 6
CH
SB CH PHASE MIDNIGHT
7 8 9
CH
SHIFT
DIMMER SPEAKERS
+ 0
10 ENTER
D.ACCESS
02
11
En