First steps, 1 connect your bass and get started, 2 sound processing – Behringer BXL1800A User Manual
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ULTRABASS BXL450/BXL900/BXL1800/BXL3000
3. FIRST STEPS
The models BXL1800, BXL3000, BXL1800A and BXL3000A
have a dual foot switch included. Connect the foot switch to
the FOOT SW(ITCH) jack. Use the foot switch to select a
channel (corresponds to the CH 2 button
) and to activate
the Ultrabass function (corresponds to the ON button
).
Fig. 2.5: Fuse holder and IEC receptacle (rear panel)
FUSE RETAINER/VOLTAGE SELECTOR. Please make sure
that the voltage indicated by the voltage selector matches
the local voltage before you connect the unit to the main
power supply. Always replace blown fuses with fuses of
the same type and rating. Some units feature a fuse retainer
in which a selection between 230 V and 120 V is possible.
Please be aware: When using your unit outside Europe
and with 120 V, a fuse with a higher rating is required.
Power is supplied via an IEC connector. The matching
cable is provided with the unit.
Fig. 2.6: COMPRESSOR function
(only BXL1800, BXL3000, BXL1800A and BXL3000A)
The COMPRESSOR control governs the compression
intensity (see chapter 3.2.4).
Use the ON switch to activate the compressor.
Fig. 2.7: ULTRABASS function
(not available on BXL450 and BXL450A)
With the Ultrabass function enabled (button
) you can
use the ULTRABASS control to add ultra-low frequencies
to your bass signal. The ULTRABASS effect is available
for both channels (see chapter 3.2.3).
Press the ON button to switch on the ULTRABASS function.
The LED in the button lights up. You can also control this
effect using the foot switch supplied with the unit (except
for BXL900 and BXL900A).
3. FIRST STEPS
3.1 Connect your bass and get started
Were sure you cannot wait to set up and connect your
ULTRABASS amp and check out its sounds. So, lets get going!
s
Connect your instrument to the input jack
before you
switch on the unit. Use a standard instrument cable with
¼" TS connectors.
s
Turn the MASTER control
fully to the left, then switch
off the equalizer, compressor and Ultrabass function
(buttons
,
and
) to start off with a neutral
sound.
s
Set the GAIN control to mid-travel position.
s
Switch on the ULTRABASS using the POWER switch
,
then adjust the desired volume level using the MASTER
control
.
The ULTRABASS has two input channels to be selected with
the channel selector
. When channel 1 is active (button LED
off), the GAIN 1 control
can be used to adjust the input
sensitivity.
To distort sounds, use channel 2. On channel 2, you can also
create an alternative sound: one that is louder than or shaped
differently from the sound on channel 2. (For details about the
Shape control, see chapter 3.2.) Use the GAIN 2 control
to
adjust the input level of channel 2. This control also allows you to
determine the amount of distortion. If the signal becomes too
loud, you can use the LEVEL control
to cut back the volume
and align it with the volume of channel 1. This way, you can
avoid drastic level changes when switching channels.
3.2 Sound processing
The ULTRABASS offers a variety of features to modify your
bass sound. These processing functions are described in this
chapter.
3.2.1 The FBQ equalizer
The equalizer is a graphic 7-band EQ (BXL450 and BXL450A:
5-band) incorporating an FBQ spectrum analyzer. When a slide
control is set to the zero position, the instrument signal remains
unprocessed in the relevant frequency band.
s
To raise the level of a specific frequency band, move its
slide control upwards.
s
To lower its volume, move the control downwards.
Each control has an LED which displays the level of the
respective frequency band by lighting up with varying degrees
of brightness. This feature helps you find the control(s) that you
need for sound processing. Press the FBQ switch
to switch
on the FBQ display. For example, if the sound is muddy or booming
at 160 Hz, this is shown by a brightly lit LED in the corresponding
control. Move the 160-Hz control down a bit (negative range) to
eliminate the booming sound. Conversely, you can accentuate
certain signal ranges that lack presence (LED lights up only
faintly) by moving the relevant controls upwards.
+
You dont have to raise the volume of a frequency
range to make it seem louder. Instead, you can
lower the other frequency ranges by moving their
slide controls downwards. This prevents the
internal signal level from becoming too high and
also gives you some valuable dynamics headroom.