Using EqualizationThe Hartke Systems Transient Attack® HS1200 Bass Amplifier gives you enormouscontrol over shaping the sound of your bass, using a process called equalization.To understand how this works, it’s important to know that every naturally occur-ring sound consists of a broad range of pitches, or frequencies, combined togetherin a unique way. This blend is what gives every sound its distinctive tonal color. EQcontrols allow you to alter a sound by boosting or attenuating specific frequencyareas—they operate much like the bass and treble controls on your hi-fi amp, but withmuch greater precision. The HS1200 provides you with three bands of equalization.Each EQ knob (labeled Low, Mid, and High, respectively) affects a different frequencyarea (100 Hz, 300 Hz, and 5 kHz, respectively) and provides approximately 15 db ofboost and attenuation.We carefully selected these frequency areas because they have maximum impact onbass signals. For example, the Low (100 Hz) control affects the very lowest audiblefrequencies (in fact, most humans cannot hear below 20 Hz), while the High (5 kHz)control affects the “twang” of a bass string. When an EQ knob is in its center detentedposition (“0”), it is having no effect. When it is moved right of center, the particularfrequency area is being boosted; when it is moved left of center, the frequency area isbeing attenuated. Turning all EQ controls up the same amount will have virtually thesame effect as simply turning up the Volume; conversely, turning them all down thesame amount will have virtually the same effect as turning down the Volume. Bothapproaches are pointless (after all, that’s why we gave you a Volume control!)ENGLISH11