Pioneer SC-82 User's Guide download pdf (Page 5)

Introduction MCACC ProThe Essence of MCACC Advanced MCACC Feature Comparison Technical DetailsMCACC

MCACC Reference Guide

MCACC

Speaker Adjustment (size, level, distance, crossover)

Create the optimum acoustic environment with Pioneer’s

MCACC, developed with the expertise of professional recording

studios. The system — complete with custom microphone —

automatically compensates for differences in speaker size, level

and distance, and equalizes response.

More details on page 11

Equalizer

The frequency response of each speaker is measured and

adjusted for all bands. This is completed with the original

Envelope Compensation applied technology, which ensures

optimum timbre-matching with minimum phase variation

among channels.

More details on page 12

Phase Control

When amplifying multi-channel audio signals,

receivers use a Low Pass Filter (LPF) to process

low-frequency signals for subwoofer output. This

causes “phase lag” — a delay of approximately 5

msec — of the low-frequency signals compared

to the main channel signals. As a result, the delayed bass makes

the sound lack synchronization. Pioneer’s Phase Control

technology effectively eliminates phase lag and significantly

improves the multi-channel sound without any extra operation.

Calibration

After Calibration

Speaker distance, sound pressure level, and

frequency response are all equalized.

Before Calibration

Speaker distance, sound pressure level, and

frequency response are all uneven.

The sound field is automatically

measured using the supplied mic.

Speaker sizes and number of

speakers are automatically detected.

SET-UP

MIC

SET-UP

MIC

Acoustic Calibration by MCACC

Problems occur even with an ideal content which has no LFE delay. Phase Control

solves this within the AV receiver.

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

Speakers

AV Receiver

PHASE CONTROL

Source

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Pioneer SC-82 User's Guide Page 5

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