Setting Up And Using Your Ha3000 / Ha4000 - Hartke HA4000 Mode D'emploi

Setting up your Hartke Systems HA3000 or HA4000 is a simple procedure which takes
only a few minutes:
1. Remove all packing materials (save them in case of need for future service) and decide
where the amplifier is to be physically placed (we recommend you avoid putting it directly
on top of your bass speakers). To avoid potential overheating problems, make sure that
the rear panel is unobstructed and that there is good ventilation around the entire unit.
2. Begin by hooking up your bass cabinet or cabinets, using the 1/4"
unbalanced Speaker output connectors on the rear panel; it is never
a good idea to power up any amplifier that is not connected to
loudspeakers. We recommend the use of a single 4 ohm cabinet or
two 8 ohm cabinets. Any appropriately rated bass cabinet with a
minimum impedance of 4 ohms (that is, 4 ohms or greater) can be
used. In order to ensure correct phase correlation, the tip of the HA 3000 / HA4000
speaker jack should be connected to the "+" (hot) input of your loudspeaker, and the
sleeve of the speaker jack should be connected to the "-" (ground) input of your
loudspeaker.
WARNING: Hartke amplifiers can deliver very high power levels. Driven to full
power, they can damage connected loudspeakers, regardless of brand, size, or
configuration. Care should be taken not to strain connected loudspeakers as this
can cause permanent damage and will degrade the performance of the entire
system. If you see connected loudspeakers moving excessively, turn your system
down immediately or use the equalization and/or Intensity controls to reduce the
amount of subharmonic (extremely low frequency) signal.
3. Connect the supplied 3-pin "IEC" plug to the rear panel AC connector
and plug the other end into any grounded AC socket—but don't turn the
amplifier on just yet. Because of the relay protection circuitry built into the
HA3000 / HA4000, you can even plug it into the same power strip that
other audio devices (such as a mixing console) are connected to.
You can then turn on all devices at once with the single power strip on-off
switch, with no danger of damaging connected speakers by generating
"thumps." CAUTION: Do not use an adapter to defeat the third
grounding pin on the AC plug or severe electric shock may
result!
4. Use a standard music instrument cable to connect your bass
to one of the Input jacks on the front panel. If your bass has
passive electronics (that is, if it has no battery), connect it to
Input 1, which is designed to handle low-voltage signals. If your
bass has active electronics (that is, if it has a battery), connect it
to Input 2, which has a 10 dB pad and is designed to handle hotter bass pickup signals.
5. On the front panel of the HA3000 / HA4000, turn the Volume and Intensity controls to
their minimum (fully counterclockwise) position and all EQ controls to their "0" (12 o'clock)
position. If you're using an HA4000, set the DBASS control to its minimum (fully
counterclockwise) position.
6. Press the front panel Power switch in order to turn on your HA3000 /
HA4000. The Power LED will immediately light, and the Protection LED
will go on for approximately five seconds, and then switch off (you'll hear a
click when it does).
Setting Up and Using Your
HA3000 / HA4000
11
SPEAKER OUTPUT
400WATT RMS/4ohms
INPUT 1 INPUT 2
–20dBU –10dBU