Pioneer AVH-X7500BT - Manual (Page 47)

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System settings
• 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 37.)
– The equalizer curve switches to Flat. (Refer to “Recalling equalizer curves” on
page 37.)
– The front, center and rear speakers will automatically be adjusted to a high pass
filter setting.
• Previous settings for auto EQ will be overwritten.
• 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.
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.
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.
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 AUX input jack on this unit.
8. Touch Start to start 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.
When auto EQ is completed, The measurement has finished. Please disconnect
the microphone and then push HOME key. is displayed.
When the car’s interior acoustic characteristics cannot be measured correctly, an error
message will be displayed. (Refer to “Understanding auto EQ error messages” on
page 56.)
• It takes about nine minutes for auto EQ measurement to be completed when all the
speakers are connected.
• To stop auto EQ, touch Stop.
10.Store the microphone carefully in the glove compartment or another safe place.
If the microphone is subjected to direct sunlight for an extended period, high
temperatures may cause distortion, color change or malfunction.
Extension Cable (Sold
separately)
Microphone
AUX input (AUX IN)
13-MAN-AVH7500-GB.fm Page 47 Thursday, February 28, 2013 10:20 AM