Pioneer SC-81 User's Guide download pdf (Page 6)

Advanced Multi-Channel Stereophonic Philosophy ELITE AV RECEIVERS REFERENCE GUIDE

Advanced Multi-Channel

Stereophonic Philosophy

Audio

Technologies

Video

Technologies

Audio Formats &

Licenses

Sophisticated

Listening Modes

Connectivity Network Features Advanced Control Construction

Advanced MCACC Auto Room Tuning

The Advanced MCACC uses a 3D calibration

method with even more precise measurements

by including the time axis. The AV receivers

also feature a speaker polarity check for

detecting misconnected cables, and a reverb

measurement display for showing before/after calibration

results. The system automatically measures crossover frequency

— much easier than the previous manual setting — and also lets

you check the measured data by MCACC application in the

AVNavigator. The subwoofer EQ feature has been newly added,

for auto or manual EQ adjustments.

Auto Phase Control Plus

During Blu-ray Disc/DVD/multi-channel file

playback, Auto Phase Control Plus makes real-

time analysis of the phase difference between

the LFE (low frequency effect) and the main

signals, and automatically compensates the gap.

Elimination of phase lag enhances strong bass

and clear high-frequency sound — especially effective for

audio content such as live performance and music video clips.

* Effectiveness depends on content

Speaker Polarity Check

The Advanced MCACC will check the speaker polarity for

proper connection. “Reverse Phase” will be displayed on the

GUI screen if the speaker’s wiring (+ and -) is inverted.

Standing Wave Control

Acoustic standing waves occur when the sound waves from

your speaker resonate with those reflected off the walls.

Depending on the speaker placement, your listening position

or the shape of the room, standing waves have a negative

effect on the overall sound, especially in certain lower

frequencies. Standing Wave Control effectively decreases

resonance and prevents inaccurate EQ-setting calibration.

Subwoofer EQ

This new EQ feature allows you to adjust the subwoofer

tone. For Auto MCACC, the subwoofer EQ is automatically

adjusted with EQ type ALL CH ADJ, while manual adjustment

is available with EQ type SYMMETRY and FRONT ALIGN. As

with other EQ, the manual adjustment can be done on the AV

receiver’s GUI.

The "Phase Control" Compensates for the Delay of Low-Frequency Sound

Speakers

AV Receiver

PHASE CONTROL

Source

= Standing Waves

Standing Wave in a Typical Listening Room

Effect of Auto Phase Control Plus (data comparison)

Original disc playback

Delay setting: 0 msec

Superior sound provided by compensating the lag in the subwoofer channel on the disc.

Playback with Auto Phase Control Plus

Delay setting: 9 msec TimeTime

Level

Front L

LFE

1 2 3 4 5 6 7 8 9 10 11 ... 44 45

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Pioneer SC-81 User's Guide Page 6

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