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OPERATIONAL
CHECKS
Start with the radio off. Set the FADER and all seven
Normal Operation:
EQ SLIDES to their center positions.
Switch to ignition or accessory on and turn on the radio
The purpose of a MULTI-BAND equalizer is to compen-
but at low volume. The light in the PEQ-72 should now
sate for the fact that no speaker is perfect and, more
be lit. If nothing happens, check the black, red, or orange
importantly, that even a perfect speaker will product im-
connections and the in-line fuses if necessary.
perfect soundpressure levels versus frequency when
placed in a real motor vehicle. It is possible to correct
If all OK so far, then by raising the radio volume should
produce speaker output. Next rotate the radio balance
control to verify sound moves from full right to full left.
If it is reversed then the inputs to the PEQ-72 are revers-
ed. If you are using four speakers then rotate the FADER
control to verify the PEQ-72 outputs are going to cor-
rect speakers.
SUBWOOFER OUTPUT: If you are using the subwoofer
output, try the two different settings. Each position allows
a different range of bass frequency thru. Because deep
bass stands out more we've provided a subwoofer gain
control. This will allow you to adjust the amount of bass
output needed to match the rest of your system.
these problems by boosting or cutting the speaker in-
put power at the proper frequencies. This is the basic
purpose of the power acoustik PEQ-72.
The task of finding the best combination of EQ settngs
to produce the desired resultequal sound-pressure levels
at your ears for equal recorded signal level at any
frequency-depends mainly on your ears. However, there
are several starting points to guide you.