Pioneer AVH P4100DVD Owner's Manual - Page 90
Using the auto-equalizer, Auto TA and EQ auto-time, alignment and auto-equalizing
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Section 19 Available accessories Using the auto-equalizer The auto-equalizer is the equalizer curve created by auto TA and EQ (refer to Auto TA and EQ (auto-time alignment and auto-equalizing) on this page). You can turn the auto-equalizer on or off. 1 Touch Auto EQ. # You cannot use this function if auto TA and EQ has not been carried out. 2 Touch d to turn the auto-equalizer on. # To turn auto-equalizer off, touch c. Auto TA and EQ (auto-time alignment and auto-equalizing) The auto-time alignment is automatically adjusted for the distance between each speaker and the listening position. The auto-equalizer automatically measures the car interior acoustic characteristics, and then creates the auto-equalizer curve based on that information. WARNING To prevent accidents, never carry out auto TA and EQ while driving. When this function measures the car interior acoustic characteristics to create an auto-equalizer curve, a loud measurement tone (noise) may be outputted from the speakers. CAUTION ! Carrying out auto TA and EQ under the follow- ing conditions may damage the speakers. Be sure to check the conditions thoroughly before carrying out auto TA and EQ. - When speakers are incorrectly connected. (e.g., When a rear speaker is connected to a subwoofer output.) - When a speaker is connected to a power amp delivering output higher than the speaker's maximum input power capability. ! If the microphone is placed in an unsuitable position the measurement tone may become loud and measurement may take a long time, resulting in a drain on battery power. Be sure to place the microphone in the specified location. Before operating the auto TA and EQ function ! Carry out auto TA and EQ in as quiet a place as possible, with the car engine and air conditioning switched off. Also cut power to car phones or portable telephones in the car, or remove them from the car before carrying out auto TA and EQ. Sounds other than the measurement tone (surrounding sounds, engine sound, telephones ringing etc.) may prevent correct measurement of the car interior acoustic characteristics. ! Be sure to carry out auto TA and EQ using the supplied microphone. Using another microphone may prevent measurement, or result in incorrect measurement of the car interior acoustic characteristics. ! When front speaker is not connected, auto TA and EQ cannot be carried out. ! When this unit is connected to a power amp with input level control, auto TA and EQ may not be possible if you lower power amp input level. Set the power amp's input level to the standard position. ! When this unit is connected to a power amp with an LPF, turn off the LPF on the power amp before carrying out auto TA and EQ. In addition, the cut-off frequency for built-in LPF of an active subwoofer should be set to the highest frequency. ! The time alignment value calculated by auto TA and EQ may differ from the actual distance in the following circumstances. However, the distance has been calculated by computer to be the optimum delay to give accurate results for the circumstances, so please continue to use this value. - When the reflected sound within a vehicle is strong and delays occur. 90 En