Owner's Manual

Setup Lexicon
3-38
CALIBRATING SPEAKER DISTANCES & OUTPUT LEVELS
The MC-12HD offers both automatic and manual calibration of speaker distances and output levels. Calibration helps to ensure accurate output
signal arrival time and level at the primary listening position. However, it is not a substitute for proper speaker placement.
Before calibrating speaker distances and output levels:
• Set crossover points for the Main Zone audio output connec-
tors. Setting crossover points afterwards could invalidate
calibrated output levels. (The CUSTOM or THX SETUP menu
can be used to set crossover points.)
• Eliminate extraneous noise in the listening space, including
conversation, air conditioners, and sounds that filter in through
open doors and windows.
• Move or remove people or objects blocking the path between the
microphones or SPL meter and the speakers.
Note:
If power is lost during automatic calibration of speaker levels or speaker
distances, re-calibration of speaker levels and speaker distances is
required.
SPEAKER CALIBRATION PARAMETERS
The table on the next page indicates the speaker calibration param-
eters that can be used to set speaker distances and output levels for
the speakers connected to the corresponding Main Zone audio
output connectors. These parameters are available on the speaker
distance and output level menus shown throughout this section. All
parameters perform the same function whether automatic or
manual calibration is selected.
SPEAKER DISTANCE PARAMETERS +0.0 to 30.0ft or 12.0m
Reflect the distance between the primary listening position and the
speaker connected to the corresponding Main Zone audio output
connector.
OUTPUT LEVEL PARAMETERS -18.0db to +12.0dB
Reflect the output level of signals sent to the speaker connected to
the corresponding Main Zone audio output connector.