7-Band Equalizer/Booster  (120-1969)    Operation      Faxback Doc. # 7549

TURNING THE EQUALIZER/BOOSTER ON AND OFF

Turn on the vehicle's ignition and the radio/cassette player.  Then press
the equalizer/booster's POWER button.  The POWER indicator lights.

To turn off the equalizer/booster, press the POWER button again.

If you are using a five-wire connection between the equalizer/booster
and the radio/cassette player, and you want to hear the sound without it
going through the equalizer/booster, press POWER so the POWER indicator
turns off.  This also turns off the equalizer/booster's amplifier.

If you are using an RCA-type connection, you connect hear the radio/
cassette player without equalization.

USING THE SLIDE CONTROLS

Set the radio/cassette player's treble and bass controls (or tone control)
to the center position.  Then adjust the equalizer/booster's slide
controls for the desired sound.

Each slide control affects a range of frequencies.  The frequency marked
above each slide control is the midpoint of the frequency range affected
by that control.

To boost a frequency range's level, slide the control above o.  To reduce
the level, slide the control below o.  To leave a frequency range's level
unchanged (flat response), set the control to o.

USING THE FADER CONTROL

Adjust FADER to control the balance between the front and rear speakers.

Turn FADER toward F to increase the front speakers' sound level and
decrease the rear speakers' sound level.

Turn FADER toward R to increase the rear speakers' sound level and
decrease the front speakers' sound level.

Note:  If you connect only front speakers, turn FADER fully toward F.

ADJUSTING THE FREQUENCY EQUALIZER

Adjust the seven slide controls on the frequency equalizer to customize
the sound for your personal taste or to compensate for the acoustics of
your car.  You can adjust the tone for seven narrow frequency ranges.

Adjust the frequency controls according to the following guidelines:

60Hz-  Boosts or cuts the frequencies in the low-bass range.  Low organ
       notes and bass drums fall in this range.  Boost this control to
       compensate for poor bass  response; cut it to reduce rumble or
       other low-frequency distortions.

150Hz- Adjust the mid-bass range.  The cello, bassoon, bass, tuba, and
       trombone fall in this range.

400Hz- Boosts or cuts the upper-bass range.  Boosts or cuts the upper-bass
       range.  Boosting the range enhances male voices, trumpet, and
       French horn.  Cutting the range diminishes them.

1kHz-  Adjusts the frequencies where the ear is most sensitive.  This is
       often called  presence.  Boosting the range enhances the vocals,
       while cutting this range makes the vocals blend into the
       background.

2.4kHz-Adjusts the harmony level of the lower mid-range.  Boosts or cuts
       the range of the clarinet and trumpet.

6khz-  Boosts or cuts the harmony level of the upper mid-range.  Boosting
       the range enhances female vocals, flute , and violin.  Cutting this
       range reduces them.

15kHz- Adjust the brilliance of the music.  Cymbals, wind noise, and other
       high-frequency sounds fall in this range.  Too much high frequency
       can make the music piercing and unpleasant.  Too little causes it
       to lose brilliance and dimension.

USING THE POWER METER

The POWER METER indicates the approximate amount of output power that
is being delivered from the equalizer/booster to the speakers.

The POWER METER is a relative indicator of output power.

When the METER LEVEL button is out (low setting), use the marked power
levels (0.05, 0.15, 0.5, 1.2, 2.0) to determine the power levels.

When the METER LEVEL button is in (high setting), multiply the marked
levels by 5 (0.25, 0.75, 2.5, 6.0, 10.0).

If all the LED lights are on and stay on, change METER LEVEL to the "high"
setting, so the lights will vary with output.

If the LED lights do not light all the way across, change METER LEVEL to
the "low" setting.

CONNECTING A PORTABLE CD PLAYER

To connect a portable CD player or other audio component that has a 1/8-
inch headphone jack, use a patch cord with a 1/8-inch stereo plug at both
ends.

Plug the cord into the equalizer/booster's CD jack and the CD player's
headphone jack.

Note:  If the CD player is plugged in, you cannot use the radio.

REPLACING A FUSE

If neither the radio/cassette player nor the equalizer/booster operates,
check the fuse in the power wire between the fuse block and the equalizer/
booster.

If the equalizer/booster operates, but the radio/cassette player does not,
check the fuse in the power wire between the equalizer/booster and radio/
cassette player.

Follow these steps to check and change a fuse.

Warning:  Before you begin, turn off the vehicle's ignition, the
          audio/cassette player, and the equalizer/booster.

1.  To check the fuse between the equalizer/booster and radio/cassette
    player, disconnect the red power wire from the radio/cassette player.

    To check the fuse between the fuse block and the equalizer/booster,
    disconnect the red power wire from the vehicle's fuse block.

2.  Push the fuse holder's two parts together and twist them so they
    spring apart.

3.  If the fuse is blown, replace it.  Use only a standard 30 mm fuse with
    the proper rating.

4.  Reassemble the fuse holder by pushing together and twisting the two
    parts so they snap together.

5.  Reconnect the red power wire.

Note:  If the fuse immediately blows again, check for pinched wires.
       Also, be sure to correctly complete all connections and install
       fuses with the proper ratings as described in "Connecting the
       Equalizer/Booster."

(LB/all-9/15/94)