Hartke HA5500, Owner'S Manual

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The Hartke HA5500 bass amplifier offers all the newest concepts in bass ampli-
fication. Here are some of its main features:

• Power to spare — The HA5500, a full 500 watts delivered to a 4 ohm

speaker system or 350 watts to an 8 ohm speaker system. 

• Our unique Transient Attack® circuitry which ensures that every nuance of

your bass performance is reproduced faithfully. 

• Two Pre-Amp input knobs, allowing custom blending of tube and solid state

sounds.

• Ten bands of high-quality graphic equalization, allowing you to create a

broad range of tonal colors for your bass instrument.  A dedicated in/out
button allows you to preset an equalization curve.

• Two fully adjustable contour knobs (high pass and low pass), which provide

further control over shaping your bass sound.

• A built-in compressor which not only adds real “punch” to your bass sound,

but also allows you to smooth out volume differences between notes.

• Two independent inputs that accommodate both passive and active bass

guitars.

• Protection relay circuitry that protects connected speakers from dangerous

overloading and also prevents “thumps” when powering on or off.

• Effect loop send and return jacks that allow you to connect to professional

outboard effects processors.

• An effect Balance knob which enables you to adjust the relative amount of

Send (“dry”) versus Return (“wet”) effect signal being  routed to the speaker
outputs.

• Electronically balanced direct output that provides a means of routing signal

to professional mixing consoles in both live performance and recording
environments.  A ground lift switch helps prevent hum or buzz from entering
the signal, and a pre/post switch allows the direct signal to be derived
either before or after the amp EQ section.

• LEDs that show you the settings of the graphic equalizer in low-light envi-

ronments as well as a two-color LED that continuously shows the status of
the compression circuitry in response to your playing.

• Rugged construction makes the HA5500 eminently road-worthy.

Features