Pioneer AVIC-W6600NEX Operation Manual page 144

*2 If you change the listening position setting, the output levels of all the speakers will change in
conjunction with the setting.
*3 To use this function, the vehicle's acoustics must be measured in advance.
*4 This function is available only when the [Listening Position] setting is set to [Front Left] or [Front
Right].
Adjusting the equalizer curve automatically (Auto EQ)
By measuring the vehicle's acoustics, the equalizer curve can be adjusted automatically
to suit the vehicle interior.
WARNING
A loud tone (noise) may be emitted from the speakers when measuring the vehicle's acoustics. Never
perform Auto EQ measurement while driving.
CAUTION
• Thoroughly check the conditions before performing Auto EQ as the speakers may be damaged if this
is performed under the following conditions:
– When the speakers are incorrectly connected. (For example, when a rear speaker is connected as a
subwoofer output.)
– When a speaker is connected to a power amp delivering output higher than the speaker's
maximum input power capability.
• If a microphone for acoustical measurement (sold separately) is not placed in the appropriate
location, 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
• Perform Auto EQ in a quiet place with the vehicle engine and air conditioning
switched off. Also, cut the power of car phones or cellular phones in the vehicle, or
remove them in advance. Surrounding sounds may prevent correct measurement of
the vehicle's acoustics.
• Be sure to use the microphone for acoustical measurement (sold separately). Using
other microphones may prevent measurement, or result in incorrect measurement of
the vehicle's acoustics.
• To perform Auto EQ, the front speakers must be connected.
• When this product is connected to a power amp with input level control, Auto EQ may
be impossible if the power amp's input level is set below the standard level.
• When this product is connected to a power amp with an LPF (low pass filter), turn the
LPF off before performing Auto EQ. Also, set the cutoff frequency for the built-in LPF of
an active subwoofer to the highest frequency.
• The distance has been calculated by a computer to provide optimum delay to ensure
accurate results. Do not change this value.
– The reflected sound within the vehicle is strong and delay occurs.
– The LPF on active subwoofers or external amps delay the lower sounds.
• If an error occurs during measurement, check the following before measuring the
vehicle's acoustics.
– Front speakers (left/right)
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