Rane THX Room EQ - Manual (Page 5)

Home THX Equalization Manual Rev. 1.5
5
Equalization Procedure
NOTE: THE FOLLOWING TEST PROCEDURES
ASSUME THAT A HOME THX AUDIO SYSTEM
HAS BEEN PROPERLY INSTALLED, AIMED AT
THE LISTENING AREA, AND LEVEL CALI-
BRATED. FAILURE TO CORRECTLY INSTALL
A HOME THX AUDIO SYSTEM MAY RESULT IN
INCORRECT ANALYZER READINGS, IM-
PROPER EQUALIZATION, AND AN ACTUAL
REDUCTION IN THE OVERALL PERFOR-
MANCE OF THE SYSTEM.
Please refer to the Home THX Audio System
Installation and Operation Manual (available from
any Home THX Licensee) for details on system
design, setup, and calibration.
For your convenience, an Equalization Proce-
dure Checklist is located on page 22 of this
Manual. We recommend that you use it as a
handy reference only after thoroughly study-
ing this Manual.
Graphic Conventions: When referring to the THX
R-2 Analyzer, specific, numbered function keys
on the control computer are identified by the
following graphics:
F-7
peak level meter or some RTAs you will notice
peaks far above the average. This is more
noticeable through a Subwoofer than through an
LCR speaker. This is because a random bass
peak can last for a longer time (lower frequency =
longer period) than most RTAs or SPL meters
average for. Higher frequency peaks last for a
shorter period. This is why most measurements
using pink noise are averaged for a long time or
are made by averaging multiple measurements.
That way these instantaneous peaks won’t throw
your readings off.
3.) The Home THX Room Equalizer
The Home THX Room Equalizer meets the
exacting specifications of the Lucasfilm Home
THX Audio program. It is specifically designed to
have the wide dynamic range, low noise, and low
distortion required by the demands of motion
picture soundtracks. Careful attention was also
paid to musical transparency.
The frequency centers of each channel’s
controls are carefully chosen to provide the
precise control necessary for accurate room
equalization, and the “constant Q” nature of each
control assures the operator that corrections to
one band don’t “spill over” into adjacent bands.
Parametric controls (where provided) allow for the
pin-point correction of mid-frequency problems,
and every equalizer is provided with a security
cover to help keep a tuned system tuned.