Behringer Ultrabass BX3000T - Manual (Page 8)

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ULTRABASS BX3000T
4. SHAPE FUNCTION
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The D.I. output signal of your BX3000T is independent
of the OUTPUT control’s setting. However, it depends
on all remaining settings and the effects loop.
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If you own a tuner that is able to loop through and
mute the signal, we recommend connecting it to
the effects loop and . This allows you to
mute the output signal as long as you tune your
instrument.
3.3 Connecting several loudspeakers
Needless to say, you can connect several loudspeakers (three
at the most) to the speaker outputs of your BX3000T, which are
wired in parallel. The figure below illustrates an example for
such a connection.
Fig. 3.3: Connection of two speaker cabinets
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If several speakers are used in parallel, the total
impedance should not drop below 4 W !
3.3.1 Calculating the total impedance when
connecting several loudspeakers
If several speakers are used in parallel, their total impedance
can be calculated as follows:
E.g. this would allow two 8 Ω loudspeakers ...
... or 1 x 8 Ω and 2 x 16 Ω :
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Please note that varying loudspeaker impedances
result in different output power delivered to the
individual speaker cabinets.
3.4 Connection of a multi-effects processor
Use the SEND/TUNER jack to connect the bass signal to a
multi-effects device or a compressor. The output level is
independent on the position of the OUTPUT control.
The RETURN jack should be connected to the output of your
effects device. If this jack is used for connection, the direct
signal is interrupted automatically. The ratio between direct and
effects signal has to be set on your effects device.
Fig. 3.4: Connection of a multi-effects processor
3.5 Setup for master/slave operation
3.5.1 ULTRABASS BX3000T as master
The LINE OUT jack allows you to connect the BX3000T to an
external power amp, using a commercial instrument cable
equipped with mono phone plugs. The signal present here is
independent on the position of the OUTPUT control.
3.5.2 ULTRABASS BX3000T as slave
controlled by an external amp/preamp
To use the power amp of your ULTRABASS for an external
amp or preamp, you need to connect the line output of the
external amplifier to the RETURN jack on your BX3000T. The
connected signal can be taken at the D.I. output. Use the OUTPUT
control to set the volume level.
4. SHAPE FUNCTION
The SHAPE function on your BX3000T provides a revolutionary
type of filter that you can use to modify your bass sound in full
detail. The filter allows you to shape your sound—which is a
must for bass players today. Extreme filter settings will give
your bass sound more power, for example:
You want to play a live bass solo but the sound doesn’t cut
through. The solo should stand out, rather than being drowned.
Set up a solid basic sound plus a very distinctive solo sound
using the SHAPE filter. Connect your footswitch to control the
SHAPE filter.
The SHAPE filter is a bargain when you are using two different
bass guitars. Maybe you want to change from a jazz bass to a
fretless bass, and vice versa—two instruments with a completely
different sound. During gigs you often lack the time to set up
your amp for a different instrument, so you’ll be happy to have a
BX3000T, because you can use the SHAPE filter for your fretless
sound, and the basic sound for the jazz bass.