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Using the Digital Signal Processor (DSP)
Auto-equalizing Function
This product’s Auto-equalizer automatically measures car interior acoustic characteristics,
and then creates the Auto-equalizer curve based on that information.
Before Operating the Auto-equalization
7 WARNING:
• To prevent accidents, never perform Auto-equalizing when driving. When this function
measures car interior acoustic characteristics to create an Auto-equalizer curve, a loud
measurement tone (noise) may be output from the speakers.
7 Precaution:
• Performing Auto-equalizing under the following conditions may damage the speakers.
Be sure to check conditions thoroughly before performing 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 location. (Refer to page 42.)
7 Read this before performing Auto-equalizing
• Perform Auto-equalizing in as quiet a place as possible, with the car engine and air con-
ditioning switched off. Also cut power to car or portable telephones in the car, or
remove from the car before performing Auto-equalizing. Sounds other than the measure-
ment tone (surrounding sounds, engine sound, telephones ringing etc.) may prevent cor-
rect measurement of car interior acoustic characteristics.
• Be sure to perform Auto-equalizing with the supplied microphone. Using another micro-
phone will prevent measurement, or result in incorrect measurement of car interior
acoustic characteristics.
• With no speaker connected, Auto-equalizing cannot be performed.
• When 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 stan-
dard position.
• After normal completion of Auto-equalizing, fader/balance settings (refer to page 35)
return to the center position (initial settings).
• If you perform Auto-equalizing when Auto-equalizer curve already exists, the previous
curve is erased.
• If you perform Auto-equalizing, the equalizer curve switches to flat.
• If you perform Auto-equalizing while a Subwoofer is connected to this product, it will
be adjusted automatically Subwoofer output setting. (Subwoofer output is automatically
turned on adjusted even if you have turned it off before.)