PIONEER VSX-AX4ASi-G/-S
Owner's Manual

The System Setup menu

07

X-Curve
Most soundtracks mixed for cinema sound too bright when played back in large rooms. The X-Curve setting acts as a kind of re-equalization for home theater listening, and restores proper tonal balance of movie soundtracks.1
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THX Audio Setting
For the most effective results when using the THX Select2 Cinema and THX MusicMode listening modes (see Using the Home THX modes on page 29) with the Advanced Speaker Array (ASA) system (see About THX on page 85), it is required that you make the setting. See Placing the speakers on page 18 for more on THX speaker placement.2

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Select �X-Curve� from the Manual SP Setup menu.
5.Manual SP Setup a.Speaker Setting b.Channel Level c.Speaker Distance d.Bass Peak Level e.X-Curve f.THX Audio Setting 5e.X-Curve X-Curve
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-2.0dB/oct

1 Select �THX Audio Setting� from the Manual SP Setup menu.
5.Manual SP Setup

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:Return

:Finish

2 Choose the X-Curve setting you want. Use / to adjust the setting. The X-Curve is expressed as a downwards slope in decibels per octave, starting at 2 kHz. The sound becomes less bright as the slope increases (to a maximum of -3.0dB/oct). Use the following guidelines to set the X-Curve according to your room size:
Room size (m2) �36 �48 �1 �60 �1.5 �72 �2 �300 �1000 �2.5 �3

a.Speaker Setting b.Channel Level c.Speaker Distance d.Bass Peak Level e.X-Curve f.THX Audio Setting

:Return

2 Specify the distance of your surround back speakers from each other.
5f.THX Audio Setting SB SP Position 0.0-0.3m SBL-SBR

X-Curve (dB/oct) �0.5

:Finish

� If you select OFF, the frequency curve will be flat and the X-Curve has no effect. 3 Select �Return� then press ENTER to finish.

� 0.0 � 0.3m � Surround speakers within 30 cm apart (best for THX surround sound). � > 0.3 � 1.2m � Surround speakers between 30 cm and 1.2 m apart. � 1.2m < � Surround speakers more than 1.2 m apart.

3 When you're finished, press RETURN. You will return to the Manual SP Setup menu.

Note
1 Since the principal is the same, X-Curve isn�t applied when you�re using any of the Home THX modes (see Using the Home THX modes on page 29). 2 If you don't have surround back speakers, or just have one, you won't be able to select this setting (Cannot select shows in the display).

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