Pioneer VSX-21TXH User Guide

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• Default setting: MEMORY 1

If you have calibrated your system for different listening 
positions

1

, you can switch between settings to suit the 

kind of source you’re listening to and where you’re sitting 
(for example, watching movies from a sofa, or playing a 
video game close to the TV).

 

press MCACC.
Press repeatedly to select one of the six MCACC presets

2

. 

See Data Management on page 88 to check and manage 
your current settings.

On this receiver, it is possible to switch the input signals 
for the different inputs as described below.

3

 

the input signal corresponding to the source 
component.
Each press cycles through the options as follows:

• AUTO – The receiver selects the first available signal 

in the following order: HDMI; DIGITAL; ANALOG.

• ANALOG – Selects an analog signal.

• DIGITAL – Selects an optical or coaxial digital signal.

• HDMI – Selects an HDMI signal.

4

• PCM – For PCM input signals.

5

 The receiver selects 

the first available signal in the following order: HDMI; 
DIGITAL.

When set to DIGITAL, HDMI or AUTO (only selected 
DIGITAL or HDMI), the indicators light according to the 
signal being decoded, as follows:

 – 

2 DIGITAL lights with Dolby Digital decoding.

 – 

2 DIGITAL PLUS lights with Dolby Digital Plus 

decoding.

 – 

2 TrueHD lights with Dolby TrueHD decoding.

 – DTS lights with DTS decoding.

 – DTS HD lights with DTS-HD decoding.

 – MSTR lights with DTS-HD Master Audio decoding.

 – 96/24 lights with DTS 96/24 decoding.

 – WMA9 Pro lights to indicate that a WMA9 Pro signal 
is being decoded.

• HDMI is not assigned by default. To select an HDMI 

signal, conduct the input setup procedure (see The 
Input Setup menu on page 43).

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.

During multichannel playback, LFE (Low-Frequency 
Effects) signals as well as low-frequency signals in each 
channel are assigned to the subwoofer or the other 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).

1 Different presets might also have separate calibration settings for the same listening position, depending on how you’re using your system. 

These presets can be set in Automatically setting up for surround sound (Auto MCACC) on page 41 or Automatic MCACC (Expert) on page 78, 
either of which you should have already completed.

2 • These settings have no effect when headphones are connected.

• You can also press 

/ to select the MCACC preset.

3 • This receiver can only play back Dolby Digital, PCM (32 kHz to 192 kHz), DTS (including DTS 96/24) and WMA9 Pro digital signal formats. 

The compatible signals via the HDMI terminals are: Dolby Digital, DTS, WMA9 Pro, PCM (32 kHz to 192 kHz), Dolby TrueHD, Dolby Digital Plus, 
DTS-EXPRESS, DTS-HD Master Audio, SACD and DVD Audio (including 192 kHz). With other digital signal formats, set to ANALOG (the 
MULTI CH IN and TUNER).
• You may get digital noise when a LD or CD player compatible with DTS is playing an analog signal. To prevent noise, make the proper digital 
connections (page 29) and set the signal input to DIGITAL.
• Some DVD players don’t output DTS signals. For more details, refer to the instruction manual supplied with your DVD player.

4 When the HDMI audio output parameter is set to THROUGH, the sound will be heard through your TV, not from this receiver.

5 • This is useful if you find there is a slight delay before AUTO recognizes the PCM signal on a CD, for instance.

• When PCM is selected, noise may be output during playback of non-PCM sources. Please select another input signal if this is a problem.

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