Ashdown Engineering 22-HEAD Guia Del Usuario página 4

22-HEAD
Secondly, if more control is required then the sliders can also be used
to tailor the E.Q. In the regions between the main tone controls. This
provides a very versatile Equalisation section, it is simple to understand
and operate, yet provides a wide degree of variation. It retains the
simplicity of a three- control tone section but provides the flexibility of a
graphic equaliser.
DYNAMIC COMPRESSION – Adding a small amount of compression
gives a fat bottom end to the sound and allows a greater volume of
amplification to be used without the playing peaks distorting the
amplifiers output stage. You will also find that this will add definition to
your playing bringing out notes within a run more clearly as it evens out
the dynamics of your playing.
A large amount of compression can be used as an effect but it will tend
to reduce the dynamics in your playing to such an extent that the volume
of the note will be the same no matter how hard or soft you hit the string.
Compression also adds sustain to notes making them longer before they
die away.
The Compression Level control adjusts the degree of compression
applied to the bass signal. For this to function correctly the Input Level
must be correctly set as described in the INPUT CONTROL section (left).
When the Input Level is correctly set there will be hardly any difference in
volume between Compression IN and Compression OUT. This is because
the amplifier automatically compensates for the reduction in level that
22-HEAD
USER GUIDE
would be apparent when Compression is added by increasing the overall
gain to restore the volume to its pre compression level, because of this
you may notice an increase in background noise with high compression
settings.
COMPRESSION IN/OUT – This push button switches the Compression
IN or OUT. This function may also be controlled from the Ashdown 4 way
footswitch. For the footswitch to operate this button must be in its OUT
position.
SUB HARMONICS - This section produces Sub Harmonics an octave
below the notes being played. The level of these Sub Harmonics relative
to the straight bass sound can be adjusted using the LEVEL control.
This is very effective in thickening the sound and you will find in use that
only a small degree of this lower octave is required to really fill out the
sound and provide a character that is not possible by any other means.
The degree of Sub Harmonics is also dependant on the setting of the
BASS control.
DIRECT INJECT (D.I.) - A balanced D.I. Is provided on a latching XLR
socket. This has a push button placed below it that allows the user to
choose either a Pre E.Q. Signal (button pushed IN) or a Post E.Q. Post Sub
and effects signal (button OUT).
The output signal from this XLR socket is set to a level and impedance
suitable for connecting directly into the Microphone input of a mixing
USER GUIDE