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Hartke HA2500 User Manual

Hartke HA2500
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250 WATT BASS AMPLIFIERS
HartkeHartke
HA2500
2
HA2500
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Hartke HA2500 Specifications

General IconGeneral
BrandHartke
ModelHA2500
CategoryAmplifier
LanguageEnglish

Summary

Introduction to the Hartke HA2500

Key Features of the Hartke HA2500

Front Panel Controls Overview

Passive Input Jack

Connects passive bass guitars, providing high impedance input.

Active Input Jack

Connects active bass guitars, providing higher input sensitivity.

Pre-Amp A (Tube Emulation)

Controls tube amplifier sound. Avoid maximum settings for distortion.

Pre-Amp B (Solid State)

Controls solid state amplifier sound. Avoid maximum settings for distortion.

Compression Control

Adjusts peak signal reduction, threshold, and ratio for dynamic range.

Graphic Equalizer In/Out Switch

Bypasses or activates the graphic equalizer for custom tone shaping.

Graphic Equalizer Sliders

Ten sliders adjust specific frequencies for tonal response.

Contour Low Pass Control

Adjusts low frequencies (100 Hz) for broad-band tone shaping.

Contour High Pass Control

Adjusts high frequencies (10 kHz) for noise reduction.

Master Volume Control

Overall volume adjustment for the amplifier.

Power LED Indicator

Indicates when the amplifier is powered on.

Power Switch

Turns the amplifier on or off.

Rear Panel Connections

Fuse Sled and Voltage Rating

Contains fuse holder and displays selected voltage rating.

AC Input Socket

Connects the power cord to the amplifier.

Cooling Fan

Provides vital cooling; keep unobstructed and in clean air.

Effect Return Jack

Returns low impedance signal from external effects processors.

Effect Send Jack

Sends signal to external effects processors or mixing consoles.

Speaker Outputs

Connects 4, 8, or 16 ohm speaker cabinets.

Setting Up and Using the Model 2500

Initial Setup and Connections

Connect speaker cabinets, power cord, and bass guitar.

Powering On and Initial Settings

Turn on amp, set controls to neutral positions before playing.

Adjusting Pre-Amp and Contour Controls

Balance tube/solid state pre-amps and adjust tone with contour knobs.

Using the Graphic Equalizer

Fine-tune tone by adjusting ten frequency sliders.

Engaging Compression

Activate compression to even out note levels and add punch.

Connecting External Effects

Link amp's effects loop to external processors.

Understanding Equalization

Contour Controls (Low Pass/High Pass)

Broad-band EQ for 100 Hz and 10 kHz, controlling bass and treble.

Ten-Band Graphic Equalizer

Precise tone shaping across ten narrow frequency bands.

Equalization Tips and Suggestions

Guidance on EQ settings for different sounds and recording.

About Compression

How Compression Works

Reduces dynamic range by leveling loud and soft notes.

Uses of Compression

Evens note levels, adds punch, protects speakers.

Technical Specifications

Appendix A: Sound Set-up Templates

Appendix B: Block Diagram

Appendix C: Changing Voltage

Voltage Selection Procedure

Step-by-step guide to changing the mains voltage setting.

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