Tact digital amplifiers and preamplifiers

Measurement (MSR) Menu Options

To adjust room response measurement settings, select the MSR menu option to display the measurment screen.

The 2.2 XP is factory configured to measurement parameters as displayed in Fig. 5. The MSR MIC CAL option should be turned ON and the MIC FILE field should display the microphone serial number as printed on your microphone.	Fig. 8. Mode menu. 2.0 mode selection is displayed in the upper left corner (1).

MSR MIC CAL When this option is set to ON, the room correction algorithm will apply the microphone calibration file to the measurement data. When this option is set to OFF, the microphone calibration file is ignored. MIC FILE This field displays the microphone file name used to perform microphone calibration. The microphone calibration file data is saved in 2.2 XP internal memory. For more details on how to transfer microphone calibrations file to 2.2 XP memory, please refer to the Microphone section of the PC software manual. AVG This is a very important measurement parameter. It equals the number of measurements that are averaged prior to being saved. The averaging process reduces the effects of random environmental noise. Typical Average values go from 10 to 30. DELAY If you do not want to be in the room while measurement is in progress, set this parameter to a few seconds to allow you to exit the room. For example, if DELAY = 10 the system will wait for 10 seconds before it starts pulsing. PULSE This parameter sets the relative level of the output measurement pulse. Minimum level is 1% and maximum level is 100%. FILE Use this option to assign a File number to the measurement you are just about to perform. At the end of the measurement process, the measurement data for all four channels will be saved in the selected File number. Tact-2.2 XP supports up to seven measurement files. In another words you can save up to seven different measurements in 2.2 XP internal memory. Use L, R, SL and SR options to select (enable) a channel for measurement. Channels are labeled as L for left, R for right, SL for subwoofer left and SR for subwoofer right channel. Selected (enabled) channels are marked by a rectangle. To select or deselect a channel place the cursor over desired channel and press ENTER button.

In most cases factory presets are optimum and users can proceed directly with performing actual measurements. To initiate the room measurement process click on the START button. The following screen will be displayed:	Microphone calibration and measurement screen.

After the measurements are completed, click on the EXIT option and then click on the MENU button to go back to the DRC-RCS screen. At any time during the measurement process you can click on the CANCEL option to cancel the process. After the measurement is completed or the measurement was canceled, the CANCEL option changes its name to EXIT.