Hartke HD 500 Mode D'emploi page 10

The Shape Control
The HD500's unique Shape control enables the sound of your bass instrument to be
enhanced at the touch of a button. When the front panel Shape switch is pressed
in, a special equalization curve is activated that is designed to enhance the sound
of most electric bass instruments. This curve provides moderate boost at certain
frequency areas and deep attenuation at other frequency areas. Furthermore, the
Shape control adds a filter to a selected frequency area within the Shape curve. As
the Shape knob is turned clockwise, the filter is applied to higher frequency areas; as
it is turned counterclockwise, the filter is applied to lower frequency areas.
Even when Shape is activated, the front-panel EQ controls remain operational.
When all three EQ controls are set to their "0" (flat) position, they add no boost or
attenuation to the preset Shape curve. However, when any EQ controls are turned
left or right of their 12 o'clock ("0") position, their boost or attenuation effect is
layered upon the preset Shape curve. In this way, you can customize the sound of
the HD500 amplifier further still to complement your particular bass instrument and
playing style.
Note that, when the Shape switch is out, the EQ controls operate on the "flat" signal
coming from your bass (that is, there is no preset equalization curve imposed).
The specific EQ you will apply to your bass signal is very much dependent upon your
particular instrument and personal taste and playing style. However, here are a few
general suggestions:
Modern Rock
Classic Rock
Vintage Deep Bass
As you experiment with the EQ and Shape controls, don't forget that your bass also
provides significant EQ control in the form of its pickup and tonal settings. This can
be particularly effective in instruments that have active circuitry.
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