The 3-Band Bass EQ uses a standard bandaxal circuit centered approximately 500 Hz. The frequency slope is 6 db per octave.
With the bass control in max position, the maximum output will occur at 40 Hz and drop at 6 db per octave above 40 hz. Maximum treble response drops at 6 db per octave at frequencies below approximately 12 kHz. Midrange is centered approximately 500 Hz.
Control settings are interactive, therefore 6 db per octave only occurs when one control is in the maximum position and the two remaining controls are set to minimum.
For a slope diagram click on the attached file