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However because of the fairly small range of frequencies produced by a bass, by top end
we mean between 2 and 5 kHz. You will find by boosting at 5kHz the ATTACK will be
emphasized whereas by boosting at 1kHz and 2kHz you will bring out the harmonics in
the note.
Use the 50Hz slider sparingly unless you have a stack of speakers available, and the
power amps to drive them. Rolling off the bottom end by using this slider to give a
degree of cut will allow you to play at a far greater volume level without the speakers
complaining. You will find that boosting at 100Hz will give a greater perceived increase
in bottom end than boosting at 50Hz.
Using The Graphic
Try to keep the slider settings balanced around the 0dB (centre) line on the graphic.
Set the sliders in a smooth, gentle curve, as setting adjacent sliders at opposite extremes
will give sharp peaks and troughs in the sound.
Switch the graphic IN and experiment with the available sounds but remember TOP end
means 1kHz to 5kHz, BOTTOM end means 50Hz and 100Hz and MID range means
250Hz and 500Hz.
N.B. Don't forget to re-adjust the INPUT GAIN setting once you have altered the graphic.
This is necessary because altering the graphic will change the overall gain. The level
indicating circuit monitors the signal to ensure that clipping or distortion is not occurring
at any stage. Consequently changing the gain will change the reading on the LED and
you will have to re-adjust the INPUT GAIN control to compensate.
The GRAPHIC may be switched IN and OUT with the GRAPHIC push button switch on
the front panel.
Compression
TRACE ELLIOT have always avoided including compression in any of their previous
amplifiers as the integrity of the signal has always been paramount in all designs. The
reason for this is simply that any kind of FULL RANGE compression used in bass is
always an unacceptable compromise. It cannot act fast enough to catch attack transients,
and if it does then it distorts the low frequency signals. If you have used any full range
compression then you will know what we mean.
That was before the TRACE ELLIOT SMX series of amplifiers where we developed a
compressor in which the bass signal is split into its HIGH and LOW frequency
components, and each passes through its own compressor, one optimized for LOW
frequencies and one optimized for HIGH frequencies.
The signals from these two compressors are then recombined into a single bass signal
providing FULL RANGE compression without the drawbacks of a single compressor.
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