The
new Tact-2.2 XP Dynamic Room Correction (DRC) preamplifier
has for the third time set new standard in room correction
technology.
Tact-2.2
XP can now perform room correction automatically
from the 2.2 XP front panel user interface, without
the need for an PC software.
The automatic room correction feature is designed
to perform the full room correction process without
using a PC interface. The Tact-2.2 XP has sufficient
DSP processing power to perform room measurement,
crossover filter design, target curve generation
and correction filter calculation. The entire process
is controlled from the 2.2 XP front panel DRC-RCS
menu. Target curve and crossover filter adjustments
can be made on the fly while the music is playing.
Users can, for example, specify a boost at low frequencies
or a roll-off at high frequencies. Values of the
'low' and 'high' frequencies can also be adjusted.
PC based room correction requires that the 2.2 XP
is connected to the RS232 port of a PC. PC software
is used just as a GUI (graphical user interface)
to provide the user with a graphical presentation
of the correction process. After the room response
measurement is completed, the room frequency response
for all measured channels can be displayed on the
screen. Crossover filters and actual correction
filters can be viewed. The displayed graphs provide
valuable information that helps users design their
own optimum target curve.
The Tact-2.2 XP memorizes two sets of target curves:
computer generated and automatically generated target
curves. When the automatic feature is turned OFF,
the 2.2 XP will use a computer generated set of
target curves. When the automatic feature is turned
ON, the 2.2 XP uses target curves generated by the
2.2 XP front panel automatic correction feature.
When the 2.2 XP is connected to a PC and the automatic
feature is enabled, automatically generated target
curves will be uploaded into the RCS/DRC screen.
The curves can than be saved or modified. Modified
curves can than be loaded back into the 2.2 XP.
However, the uploaded curves will not take effect
until the automatic feature is disabled. Any target
curve uploaded to 2.2 XP is saved as a PC generated
target curve and takes effect only when the automatic
feature is disabled. In another words, if a target
curve is to be modified by the PC software, the
automatic correction feature has to be disabled.
