Reference Guide

5
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
Low Leakage Flux Power Transformer
89
The power transformer features minimum leakage flux, ensuring
low noise with increased S/N ratio.
Hi-bit24 Audio Processing
82 81
Combined with the 24-bit DAC, maximum
performance is gained by applying the signal
processing to expand signal resolution, creating
more detailed, smooth sound and increased sound
pressure. The technology is effective for multi-
channel content on CD/DVD, PC files less than
24-bit and works with any disc player.
0 (360)
Previous power transformer
SC-89 power transformer
Pioneer specified coil is placed 4 inch from the power transformer,
and the inductance voltage in the coil is measured.
* Image may differ from actual product
30
60
100
80
60
40
20
30
60
90
120
150
180
210
240
300
270
330
120
100
80
60
40
20
Horizontal Leakage Flux Comparison
[waza]
skill/technique/ability
MCACC Auto Room Tuning
89 87 85 82 81
Create the optimum acoustic environment with Pioneer’s
MCACC (Multi-Channel Acoustic Calibration System), 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.
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
Before Calibration After Calibration
Level (dB)
Time (msec)
Frequency (Hz) Frequency (Hz)
Time (msec)
Level (dB)
MCACC Reverberation Characteristics
Reverb
Reverb