The Effect of the Shape Control
The HS1200’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 improve 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 front panel
Shape control adds a filter to a selected frequency area within the Shape curve. As
the Shape knob is turned clockwise, the filter is imposed on higher frequency areas;
as it is turned counterclockwise, the filter is imposed on lower frequency areas. At the
fully clockwise position, the filter is applied to the 1 kHz frequency area; at the fully
counterclockwise position, the filter is applied to the 80 Hz frequency area.
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 attenua-
tion 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 superimposed
upon the preset Shape curve. In this way, you can customize the sound of the HS1200
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).
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