Pioneer VSX-920-K: Standing Wave

The Advanced MCACC menu10

3 Select each channel in turn and adjust the

Standing Wave

distance as necessary.

2

•Default setting: ON

/ATT 0.0dB (all filters)

Use / to adjust the delay of the speaker

Acoustic standing waves occur when, under

you selected to match the reference speaker.

certain conditions, sound waves from your

The delay is measured in terms of speaker

speaker system resonate mutually with sound

distance from 0.01m to 9.00m.

waves reflected off the walls in your listening

Listen to the reference speaker and use it to

area. This can have a negative effect on the

measure the target channel. From the listening

overall sound, especially at certain lower

position, face the two speakers with your arms

frequencies. Depending on speaker placement,

outstretched pointing at each speaker. Try to

your listening position, and ultimately the

make the two tones sound as if they are

shape of your room, it results in an overly

arriving simultaneously at a position slightly in

resonant (‘boomy’) sound. The Standing Wave

1

front of you and between your arm span.

Control uses filters to reduce the effect of overly

resonant sounds in your listening area. During

playback of a source, you can customize the

filters used for Standing Wave Control for each

3

of your MCACC presets.

1Select ‘

Standing Wave

’ from the

Manual

MCACC

setup menu.

When it sounds like the delay settings are

2 Adjust the parameters for the Standing

matched up, press  to confirm and continue

Wave Control.

to the next channel.

• Filter Channel – Select the channel to

• For comparison purposes, the reference

which you will apply the filter(s): MAIN (all

speaker will change depending on which

except center channel and subwoofer),

speaker you select.

Center or SW (subwoofer).

• If you want to go back and adjust a

• TRIM (only available when the filter channel

channel, simply use / to select it.

above is SW) – Adjust the subwoofer

4 When you’re finished, press

RETURN

.

channel level (to compensate for the

You will return to the Manual MCACC setup

difference in output post-filter).

menu.

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1 • If you can’t seem to achieve this by adjusting the distance setting, you may need to change the angle of your

speakers very slightly.

• For better audibility, the subwoofer emits a continuous test tone (oscillating pulses are heard from your other

speakers). Note that it may be difficult to compare this tone with the other speakers in your setup (depending on the

low frequency response of the reference speaker).

2 You can switch on or off the Standing Wave and Acoustic Calibration EQ feature in the AUDIO PARAMETER menu.

See Setting the Audio options on page 68 for more on this.

3 • Since they will be overwritten, you may want to save the standing wave settings made with the Auto MCACC Setup

to another MCACC preset.

• Standing Wave control filter settings cannot be changed during playback of sources using the HDMI connection.

• When Standing Wave is selected for an MCACC preset memory where STAND.WAVE is set to OFF in the AUDIO

PARAMETER, STAND.WAVE ON is automatically selected.