Di Out Xlr Socket (7 Band); Pre/Post Switch (7 Band); Graphic Equalizer Switch & Sliders - TRACE ELLIOT AH1000-12 Guide D'utilisation

By using the two controls a wide range of valve sounds can be dialled in, from vintage warmth to
heavy overdrive. Bear in mind this is not simulation, this is a real valve doing a real job. We
recommend experimenting with both the PRE SHAPE and GRAPHIC EQ in various settings while
the VALVE circuit is switched on. With PRE SHAPE selected and a low to medium amount of
DRIVE, the sound takes on the character of a vintage valve bass amp due to 'shaping' the signal
before the valve. With higher DRIVE settings the tone often benefits from some sound 'sculpting'
by the GRAPHIC, a little boost in the high mids helps the attack.
Also the COMPRESSOR can be used to further shape the tone. The HIGH BAND is of particular
use when lots of overdrive is being produced due to the extra high frequency content in the sound.
Basically, this is a very versatile circuit that can produce various valve tones, from demurely subtle
to wantonly filthy! Experiment and enjoy.
Once a particular sound is found, the user can switch to the normal, clean sound and back again by
pressing the associated switch on the front panel or by using the footcontroller, both of which have a
red LED to show its status.
Please note: to drive the valve hardest the INPUT GAIN control needs to be set correctly as
described above.

(10) DI OUT XLR socket (7 Band)

This is a low impedance balanced output for connecting direct to a stage box or mixer for live or
studio use. It gives the engineer a strong, clean signal without any overspill from other instruments.
The XLR socket is wired as normal: pin 1 = Ground, pin 2 = Signal +, pin 3 = Signal –
(An 'Earth Lift' switch is featured on the rear panel - see below).

(11) PRE/POST switch (7 Band)

This switches the signal that appears at the DI OUT from PRE with the switch out, to POST with
the switch in.
PRE is before any EQ is applied, therefore a higher level, buffered, version of the input signal.
POST is after the EQ, COMPRESSOR and effects loop, but before the OUTPUT LEVEL control.
Therefore, any sound shaping that is applied within the amplifier will be heard on the DI signal as
well. Different applications will determine different settings. If in doubt choose POST as this will
be basically the same sound that will be heard from the cabinet / combo speakers.
Both settings should have similar general output levels. Neither will be affected by adjustments to
the OUTPUT LEVEL, so turning up on stage will not overload the mixing desk once it is set. In
either setting the output will be muted if the MUTE function is used.
(12) GRAPHIC EQUALIZER switch & sliders
When switched on the GRAPHIC EQUALIZER will be inserted into the signal chain. The green
LED above the sliders shows its status. It can be switched on and off using the front panel switch
and also from the footcontroller.
The graphic equalizer is the centre piece, both functionally and quite literally, of a traditional Trace
Elliot amplifier, so much so that the actual name for each part of the range is derived from the
number of frequency bands within each one, i.e. 7 Band and 12 Band. Both types are very powerful
tools for controlling the tone of your instrument. The design of a Trace Elliot graphic equalizer is
very different from a standard sound reinforcement EQ. 15dB of cut or boost is available for each
band, but instead of being spread mathematically over the frequency range they have been set at
carefully selected frequencies of particular use for bass guitar.
10