Hartke HS 1200 KickBack User Manual

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Hartke HS 1200
KickBack User Manual Manual pdf 13 page image

13Using EqualizationThe Hartke Systems Transient Attack® HS 1200 Bass Amplifier givesyou enormous control over shaping the sound of your bass, using aprocess called equalization. To understand how this works, it’s impor-tant to know that every naturally occurring sound consists of a broadrange of pitches, or frequencies, combined together in 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 specificfrequency areas—they operate much like the bass and treble controls onyour hi-fi amp, but with much greater precision. The HS 1200 providesyou with three bands of equalization. Each EQ knob (labeled Low, Mid,and High, respectively) affects a different frequency area (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 maxi-mum impact on bass signals. For example, the Low (100 Hz) controlaffects the very lowest audible frequencies (in fact, most humans cannothear below 20 Hz), while the High (5 kHz) control affects the “twang” of abass string. When an EQ knob is in its center detented position (“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, thefrequency area is being attenuated. Turning all EQ controls up the sameamount will have virtually the same effect as simply turning up theVolume; conversely, turning them all down the same amount will havevirtually the same effect as turning down the Volume. Both approachesare pointless (after all, that’s why we gave you a Volume control!)HIGHMIDLOW-15 +15 -15 +15 -15 +150 0 0