Pioneer DEH-80PRS Owner's Manual - Page 30
Performing auto TA and EQ - active
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Section 02 Operating this unit ! When this unit is connected to a power amp with an LPF, turn this LPF off before performing auto TA and EQ. Also set the cut-off frequency for the built-in LPF of an active subwoofer to the highest frequency. ! The time alignment value resulting from auto TA and EQ has been calculated by a computer and is the optimum delay time that will give accurate results. Be sure to use the resulting value although it may differ from the actual distance when: - The reflected sound within the car is strong and delays occur. - The LPF on active subwoofers or external amps delay the lower sounds. ! Auto TA and EQ changes the audio settings as follows: - The fader/balance settings return to the center position. (Refer to Using fader/ balance adjustment on page 22.) - The graphic equalizer curve switches to Flat. (Refer to page 27.) - When a subwoofer is connected to this unit, it will be adjusted automatically to both subwoofer output and high pass filter setting for rear speaker. ! Previous settings for auto TA and EQ will be overwritten. ! When connecting tweeters, please confirm the tweeter's usable frequency range. When you set the cut-off frequency, set higher than the lowest usable frequency of the tweeter. ! Auto TA uses higher range than 10 kHz for measurement. Therefore, using the tweeter that cannot reproduce 10 kHz frequency range may damage the tweeter. When auto TA and EQ is operated, be sure to set the appropriate cut-off frequency. Also, use the tweeter that can reproduce 10 kHz at the lowest usable frequency. Performing auto TA and EQ 1 Stop the car in a place that is quiet, close all the doors, windows and sun roof, and then turn the engine off. # If the engine is left running, the noise from the engine may cause incorrect auto TA and EQ. 2 Fix the supplied microphone in the center of the headrest of the driver's seat, facing forward. # The auto TA and EQ may differ depending on where you place the microphone. If desired, place the microphone on the front passenger seat to perform auto TA and EQ. 3 Turn the ignition switch to ON or ACC. # If the air conditioner or heater is turned on, turn it off. The noise from the fan may cause incorrect auto TA and EQ. # Press SRC/OFF to turn the source on if this unit is turned off. 4 Select the position for the seat on which the microphone is placed. Refer to Using the position selector on page 21. # If no position is selected before auto TA and EQ is started, Front Left is automatically selected. 5 Press SRC/OFF and hold until the unit turns off. 6 Press and hold EQ/DISP OFF to enter the auto TA and EQ measurement mode. The front panel opens automatically. 30 En