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EQUALISATION - This consists of BASS,
MIDDLE and TREBLE controls with two more
rotary controls placed in-between. This can
be used in a number of ways:
Firstly as a very simple Bass, Middle and
Treble tone control section as found on older
traditional amplifiers. This is done by leaving
the 340Hz and 1.6kHz controls set in their
centre positions and using only the BASS,
MIDDLE and TREBLE controls to alter the
overall tone.
Secondly, If more control is required then the
340Hz and 1.6kHz controls 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.
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 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 is switched IN/OUT with the
push button adjacent to the Compression
Level control.
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.
Sub Harmonics are switched IN/OUT with the
push button adjacent to the Sub Harmonics
Level control.
DIRECT INJECT ( D.I. ) - A balanced D.I. is
provided on the front panel XLR socket. This
provides a Post E.Q. Post effects signal.
The output signal from this XLR socket is set
to a level and impedance suitable for
connecting directly into a Balanced
Microphone input of a mixing desk for either
Direct Injection into the PA system or for
recording.
EFFECTS SEND/RETURN - A serial effects
loop is provided at a level of 0dB. The Effects
Send and Return sockets for this are on the
front panel below the D.I. socket.
The EFFECTS SEND socket can also be used
as a Line Out socket if required. The signal
path through the preamp is only broken
when a jack plug is inserted into the EFFECTS
RETURN socket. The EFFECTS SEND is
situated after the EQ.
TUNER/LINE OUT - This output socket
provides a line level signal that can be used
either for a permanent connection to a tuner
or a line output for connection to other
power amplifiers and speakers.
OUTPUT LEVEL - The OUTPUT control
adjusts the overall level of the amplifier.
Adjust this for your preferred overall stage
playing volume.
Everything possible has been done to make
these reliable, minimum service, high quality,
long lasting powerful bass amplifiers.
We know you will appreciate the effort that
has been put into the design and
manufacture of this unit and you will be
rewarded in your choice of bass amplifier by
long life and reliability.