RB SERIES FRONT PANEL FEATURES - cont.
BASS CONTROL:
A passive low end control that adjusts the sub low frequencies of the preamp circuit. Set flat to start and
adjust to find the desired amount of low end.
TREBLE CONTROL:
A passive high end control that adjusts the amount of high frequencies of the preamp circuit. Set flat to start
and adjust to find the desired amount of high end..
MIDDLE CONTROL:
A passive mid-range control that adjusts all mid-range frequencies of the preamp circuit. Set flat to start and
adjust to find the desired amount of mid-range.
CONTOUR CONTROL:
A secondary mid-range control that works in tandem with the MIDDLE control allowing you to sweep between
different mid-range frequencies. With the MIDDLE control set flat you will notice the Contour is extremely
subtle, but as you adjust the MIDDLE control off of flat the Contour control will become much more active.
A lower Contour setting pin points the lower mid-range frequencies that the MIDDLE control will then cut or
boost. Set the Contour knob higher and the MIDDLE control will cut or boost the higher mid-range
Frequencies.
MASTER LEVEL CONTROL:
The knob controls the overall volume and output of the amplifier. Use this control along with the Pre-Gain
level control to achieve the desired volume level. Experiment with using different Pre-Gain and Master settings
as you will notice some tonal differences by how you set and balance the Pre-Gain and Master controls.
