Pioneer AVH-X5500BHS Owner's Manual - Page 40

Section 20 System settings System settings Auto EQ (auto-equalizing) The auto-equalizer automatically measures the car's interior acoustic characteristics, and then creates an auto-equalizer curve based on that information. ! To perform this function, dedicated micro- phone (e.g. CD-MC20) is required. WARNING As a loud tone (noise) may be emitted from the speakers when measuring the car's interior acoustic characteristics, never perform auto EQ while driving. CAUTION ! Thoroughly check the conditions before per- forming auto EQ as the speakers may be damaged if these functions are performed when: - The speakers are incorrectly connected. (For example, when a rear speaker is connected as a subwoofer output.) - 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 battery drainage. Be sure to place the microphone in the specified location. Before operating the auto EQ function ! Carry out auto 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 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 EQ using the optional microphone. Using another microphone may prevent measurement, or result in incorrect measurement of the car interior acoustic characteristics. ! In order to perform auto EQ, the front speaker must be connected. ! When this unit is connected to a power amp with input level control, auto EQ may not be possible if the power amp's input level is set below the standard level. ! When this unit is connected to a power amp with an LPF, turn this LPF off before performing auto EQ. Also set the cut-off frequency for the built-in LPF of an active subwoofer to the highest frequency. ! 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. - The reflected sound within the car is strong and delays occur. - The LPF on active subwoofers or external amps delay the lower sounds. ! Auto EQ changes the audio settings as follows: - The fader/balance settings return to the center position. (Refer to Using fader/balance adjustment on page 33.) 40 En - The equalizer curve switches to Flat. (Refer to Recalling equalizer curves on page 33.) - The front, center and rear speakers will automatically be adjusted to a high pass filter setting. ! Previous settings for auto EQ will be overwritten. ! If using an AVH-X3500BHS, AVH-X2500BT, or AVH-X1500DVD, connect a microphone extension cable (sold separately) to the AUX input in advance. Performing auto 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, engine noise may prevent correct auto EQ. 4 Press the home button to switch to the home display. 5 Touch the system key to open the system menu. 6 Touch Auto EQ Measurement to enter auto EQ measurement mode. 7 Plug the microphone into the microphone input jack on this unit. AVH-X5500BHS and AVH-X4500BT 2 Fix the optional microphone in the center of the headrest of the driver's seat, facing forward. The auto EQ may differ depending on where you place the microphone. If desired, place the microphone on the front passenger seat to carry out auto EQ. AVH-X3500BHS, AVH-X2500BTand AVH- X1500DVD Extension Cable (Sold separately) Microphone AUX input (AUX) 8 Touch Start to start auto EQ. 3 Turn the ignition switch to ON or ACC. If the car's air conditioner or heater is turned on, turn it off. Noise from the fan in the air conditioner or heater may prevent correct auto EQ. 9 When the 10-second countdown starts, get out of the car and close the door within 10 seconds. A measurement tone (noise) is emitted from the speakers, and auto EQ measurement begins.