Pioneer DEH-P900HDD Operation Manual page 57

PRECAUTION:
• Carrying out auto-equalizing under the follow-
ing conditions may damage the speakers. Be
sure to check conditions thoroughly before
carrying out auto-equalizing.
– 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 speak-
er'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 loca-
tion. (Refer to "Carrying out auto-equalizing.)
Before operating the auto-equalization
function
• Carry out auto-equalizing in as quiet a place
as possible, with the car engine and air condi-
tioning switched off. Also cut power to car
phones or portable telephones in the car, or
remove from the car before carrying out auto-
equalizing. Sounds other than the measure-
ment tone (surrounding sounds, engine
sound, telephones ringing etc.) may prevent
correct measurement of car interior acoustic
characteristics.
• Be sure to carry out auto-equalizing using the
supplied microphone. Using another micro-
phone may prevent measurement, or result in
incorrect measurement of car interior acoustic
characteristics.
• Neither front nor rear speaker is connected,
auto-equalizing cannot be carried out.
• When this product is connected to a power
amp with input level control, auto-equalizing
may not be possible if you lower power amp
input level. Set the power amp's input level to
the standard position.
• Auto-equalizing changes the audio settings as
below:
– The fader/balance settings return to the cen-
ter position. (Refer to page 50.)
– The graphic equalizer curve switches to
"FLAT". (Refer to page 49.)
– When a subwoofer is connected to this prod-
uct, it will be adjusted automatically either
subwoofer output and high pass filter setting
for rear speaker.
• If you carry out auto-equalizing when an auto-
equalizer curve already exists, the previous
curve will be erased.
Carrying out auto-equalizing
1. Stop the car in a place that is as quiet as
possible, close all doors, windows and
the sun roof, and then turn the engine off.
If the engine is left running, engine noise
may prevent correct auto-equalizing.
2. Fix the supplied microphone in the center
of the headrest of the driver's seat, facing
forward, using the belt (sold separately).
The auto-equalizer curve may differ depend-
ing on where you place the microphone. If
desired, place the microphone on the front
passenger seat to carry out auto-equalizing.
Continued overleaf.
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