Bedienungsanleitung Hartke HA2500 (Seite 7 von 20) (Englisch)

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Guided Tour - Model 2500 Front Panel

5. Compression control - This determines the amount of compression (peak

signal reduction) by simultaneously adjusting both threshold and compres

sion ratio (which ranges from 2:1 to infinity [limiting]). At the fully coun

terclockwise “Off” position, the circuitry is bypassed and no compression is

applied (the knob clicks when set to the “Off” position). As the knob is raised

clockwise (at settings from “1” to “∞”) increasing amounts of compression are

applied. For more information, see the “About Compression” section on page

12 of this manual.

6. Graphic Equalizer In/Out switch - When pressed in (the “In” position), the

Model 2500’s graphic equalizer circuitry (as described in #7 below) is opera

tional. When pressed out (the “Out” position), it is bypassed. The provision of

this switch allows you to set up a custom equalization curve (an equalization

“preset”) with the graphic EQ sliders, which can then be activated with the

press of a single button.

7. Graphic Equalizer - These sliders allow you to “draw” the tonal response of

the system by adding 15 dB of boost or attenuation to ten different narrow-

band frequency areas (30 Hz, 64 Hz, 125 Hz, 250 Hz, 500 Hz, 1 kHz, 2 kHz, 3

kHz, 5 kHz, and 8 kHz), affecting the main output signal of the Model 2500.

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 “+15” position), the selected frequency area

is boosted, and when it is moved down (below the “0” position, towards the

“-15” position), the selected frequency area is attenuated. For more informa

tion, see the “About Equalization” section on pages 10 - 11 of this manual.

8. Contour Low Pass control - This acts as a broad-band low frequency equal-

izer, providing 18 dB of boost or attenuation at 100 Hz. You should generally

adjust this control (and the Contour High Pass control, described in #9 below)

prior to “fine-tuning” the system with the graphic equalizer (as described in #7

above). For more information, see the “About Equalization” section on pages

10 - 11 of this manual.

9. Contour High Pass control - This acts as a broad-band high frequency

equalizer, providing 18 dB of boost or attenuation at 10 kHz. You should

generally adjust this control (and the Contour Low Pass control, described

in #8 above) prior to “fine-tuning” the system with the graphic equalizer (as

described in #7 above). For more information, see the “About Equalization”

section on pages 13 - 14 of this manual.

10. Master Volume control - This is the overall volume control. For best sig

nal-to-noise ratio, keep the output of your bass at or near maximum and

adjust the amp’s Master Volume to the desired level.

11. Power LED - Lights whenever the Model 2500 is powered on.

12. Power switch - Use this to power the Model 2500 on or off.

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Hartke HA2500 Seite 7

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