Audio Control EX concert series Owner's Manual page 16

Concert Series Owner's Manual
Adjusting the EQX (cont'd)
NOTE: Consult the amplifier owner's manual
for information on setting its input sensitivity.
If adjustable, set each amplifier to accept a
signal between 1.0 and 2.0 volts (1000 and 2000
mV). This may be a minimum setting on your
amp. Don't worry, the EQX can still drive it to
full volume. If your amp cannot accept 2V you
may need to turn the Output Level down a bit.
7. Play a tape or CD (preferably one containing
a variety of acoustic instruments).
8. With the deck's volume set to a normal
listening position (i.e., about one-third on),
adjust the OUTPUT LEVEL controls until
the system is playing at a comfortable level.
9. A third-octave real time audio analyzer is
the ultimate tool for getting the best sound
quality from your new EQX. If you are in a
real hurry, you can set the equalizer by ear.
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10. Listen to the vocals and instruments, and
trying cutting the frequencies in the mid-
bass (90 to 250 Hz) and mid-range (2 to 4
kHz) spectrum. The mid-bass response is
usually a problem area due to standing
waves caused by sound resonating in the
passenger compartment. The mid-range
frequencies are most sensitive to the ear and
usually need to be brought down a bit.
11. Continue listening and try boosting the low
bass frequencies in the 31.5 to 63 Hz area.
Usually this area needs help due to design
limitations of smaller woofers and loss of
bass in cassettes.
NOTE: If the (yellow) OVERLOAD indicator
comes on, something is boosted too much.
Either bring down the suspect frequency control
or adjust the INPUT GAIN controls to reduce
the overall gain.