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• Rugged plywood construction makes the Hydrive Combos eminently road-worthy. • The Hydrive combos are beautifully appointed in tough black vinyl with chrome corners and matching steel grills, giving them a powerful appearance, and sound, on stage. • Hartke extended three-year warranty. Hartke 112C, 115C and 210C Combo Bass Amplifier Features Guided Tour - Front Panel 1. Input (1/4-inch Jack) - Connect your bass guitar to this standard 1/4" unbalanced jack. This Hydrive Combo Input has been designed to handle the signals from just about any bass with either passive pickups or with hotter pickups if your bass has active electronics (that is, if it has a battery). 2. Level (control knob) - This is the overall volume control. For best signal-tonoise ratio, keep the output of your bass at or near maximum and adjust the Hydrive Combos Volume to the desired level. 3. Compression (control knob) - This control determines the amount of compression (peak signal reduction) by simultaneously adjusting both threshold and compression ratio (which ranges from 2:1 to infinity [limiting]). At the fully counterclockwise “Zero” position, the circuitry is bypassed and no compression is applied. As the knob is raised clockwise (at settings from “1” to “10”), increasing amounts of compression are applied. 4. Compression LED – The LED provides a visual indicator of the status of the compression circuitry. When the LED is off (for example, when the Limiter knob [see #3 above] is set to “Zero”), no compression is being applied. When flashing, compression is being applied to the incoming signal at a ratio of approximately 2:1. When steadily blue, the compression ratio is approaching infinity (limiting is being applied to peak signals). This LED “follows” the incoming signal, changing continuously as different amounts of compression and/or limiting are being applied. 5. Frequency (control knob)– This control knob is used to set the center cut frequency for the Shape circuit. The Shape control adds a pre-set equalization curve with a slight lift in the low frequencies, a cut in the mids and then a slight lift again in the highs depending on it's setting. 6. SHAPE (switch) – This switch is used to engage the Hartke Shape circuit which adds a pre-set equalization curve with a slight lift in the low frequencies, a cut in the mids and then a slight lift again in the highs. For additional control on stage, the SHAPE switch can be controlled using a Hartke FS2 footswitch. 7. Harmonics (control knob) – When the Bass Attack Overdrive switch is ON, the control knob adjusts the amount of overdrive distortion. Guided Tour - Front Panel Guided Tour - Front Panel BrIte (control knob) – This knob set the amount of high frequency tone control used to drive the harmonics in the Bass Attack Overdrive. The control is active when the Bass Attack Overdrive switch is ON. 9. mIx (control knob) – When the Bass Attack Overdrive switch is ON, the control knob is used to blend the dry and over driven signal. When set all the way to the left, the signal is 100 percent dry. When set to all the way to the right, the signal is 100 percent through the overdrive effect. When using the overdrive effect, a good place to start is right in the middle. 10. on- (switch) – A backlit push switch used to turn on the Bass Attack Overdrive effect. For additional control on stage, the Bass Attack Overdrive ON switch can be controlled using a Hartke FS2 footswitch. 11. GrapHIC equaLIzer - These sliders allow you to “draw” the tonal response of the system by adding 12 dB of boost or attenuation to ten different narrow-band frequency areas (30 Hz, 80 Hz, 160 Hz, 315 Hz, 630 Hz, 1.25 kHz, 2.5 kHz, and 5 kHz). When a slider is at its center detented (“0”) position, the selected frequency area is unaffected (it is said to be flat). When a slider is moved up (above the “0” position, towards the “+12” position), the selected frequency area is boosted, and when it is moved down (below the “0” position, towards the “-12” position), the selected frequency area is attenuated. For more information, see the “Using Equalization” section on page 14 in this manual. 12. Bass (control knob) - This control provides approximately 15 db of cut or boost at 100 Hz, with a peak (bell) curve. When the knob is at the 12 o’clock (“0”) position, there is no boost or attenuation (that is, flat response). As it is turned clockwise from the “0” position, the frequency area is boosted; as it is turned counterclockwise from the “0” position, the frequency area is attenuated. For more information, see the “Using Equalization" section on page 14 in this manual. 13. treBLe (control knob) - This peaking control provides approximately 15 db of cut or boost at 8 kHz. When the knob is at the 12 o’clock (“0”) position, there is no boost or attenuation (that is, flat response). As it is turned clockwise from the “0” position, the frequency area is boosted; as it is turned counterclockwise from the “0” position, the freq...

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