Octet Matrix Audio BA21 User Manual - page 7
Page 7
Copyright© 2011 Octet Matrix Audio
Final Verification & Optimization
The Octet Matrix Audio Setup CD contains several audio tracks that will confirm proper left-
right channel setup and phasing.
The test tracks on the Octet Matrix Audio Setup CD are:
1) Introduction
2) Left-Right channel identification
3) Left-Right channel phase confirmation
Channel & Phase Verification
1) Before starting these tests, defeat all audio processing functions in the source and/or
receiver. This includes any automated home theater system setups. Make sure all
speaker levels are the same and that the distances are equal. If audio processing is
active, the results of the phase testing may provide confusing or incorrect results.
2) Insert the Octet Matrix Audio set up CD into a CD player, DVD player, or Blu-ray
player. If the CD doesn’t start playing automatically, point the player to track 1 and
then hit play. When the Octet Matrix Audio Setup CD introduction starts, adjust the
source, receiver, or amplifier volume to a comfortable listening level.
3) Track 2 is a channel identification track and will alternate between spoken “Left
channel” and “Right channel” routed only to the respective channels. Confirm that
“Left channel” is coming from the left speaker and that “Right channel” is coming from
the right speaker.
4) If the channels are reversed, check the wiring to the speakers and re-route if
necessary. If the wiring to the speakers is correct, check all other system wiring and fix
any incorrect channel routing.
5) Track 3 is a phase verification track to confirm that speaker to speaker phase is
correct. To use this track effectively, you should be centered between the speakers
and 3' - 5' away. The track alternates several times between the spoken phrase “In
phase” followed by pink noise played in phase, and “out of phase” followed by pink
noise played out of phase. Both the voice introduction and the pink noise will be
either in phase or out of phase.
6) When everything is set up correctly, you should hear:
a. In Phase - the voice and the pink noise will have a clearly defined point of
origin centered between the speakers.
b. Out of Phase - the voice and pink noise will have no clearly defined origin and
may even sound as if the sound originates outside of the speakers.