Ha3000 / Ha4000 Features - Hartke HA4000 Mode D'emploi

HA3000 / HA4000 Features

The Hartke HA3000 and HA4000 offer all the newest concepts in state-of-the-art bass
amplification. Here are some of their main features:
• Power to spare—in the case of the HA3000, 300 watts into 4 ohms, and, in the case of
the HA4000, a whopping 400 watts into 4 ohms.
• Two independent inputs that accommodate both passive and active bass guitars.
It is almost impossible to overload the input of your HA3000 or HA4000!
• Dual speaker outputs so you can connect two 8 ohm speaker cabinets without the
need for daisy-chaining.
• Protection relay circuitry that protects connected speakers from dangerous overloading
and also prevents "thumps" when powering on or off.
• Fan-cooled to avoid thermal and overheating problems.
• Dual effect loop send and return jacks (one pair post-eq and the other pre-eq) that
allow you to connect to professional outboard effects processors.
• Electronically balanced XLR Direct and Preamp outputs provide a convenient means of
routing signal to professional mixing consoles in both live performance and recording
environments. In addition, an unbalanced 1/4" Line output allows you to connect
slave amplifiers.
• Ground lift switch helps prevent hum or buzz from entering the Direct Out and Preamp
Out signals.
• Four bands of high-quality equalization, allowing you to create a broad range of tonal
colors for your bass instrument. In the HA4000, the two mid-bands are fully
parametric, with sweepable center frequency and adjustable bandwidth control.
In addition, the HA4000 provides a fifth, "DBASS" (Deep Bass) band—a harmonic
enhancer which adds extremely low frequencies to your bass signal.
• A unique contour filtering system called "Shape" which activates a multi-band
equalization curve and notch filter specially designed to enhance the sound of the
electric bass. Front-panel Shape and Intensity controls allow you to continuously
sweep the filter through various frequency areas in order to customize the effect of
the curve to the specific tonal characteristics of your particular bass instrument.
• In the HA4000, a unique dedicated "SBASS" (Sub Bass) output provides subharmonic
line-level signal for connection to an external amplifier driving a subwoofer.
• In the HA4000, a front-panel Audio Mute control and rear-panel Mute footswitch input
allow you to temporarily silence all outputs—except the dedicated Tuner output—while
tuning your bass.
• Side handle for convenient, easy transporting.
• Rugged construction make both the HA3000 and HA4000 eminently roadworthy.
4