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Setting Up and Using the LH5210 and LH5410
Setting up your Hartke Systems LH Series Bass Amplifier 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. To avoid potential
overheating problems, be sure that the rear panel is unobstructed and that
there is good ventilation around the entire unit, particularly behind the rear-
panel fan.
2. Next, connect the 3-pin AC plug into any grounded AC socket. Don’t turn
the amplifier on just yet, though.
3. Use a standard music instrument cable to connect your bass to the
appropriate Input jack on the front panel (if your bass has active circuitry,*
connect it to the “Active” input; if not, connect it to the “Passive” input). On
the front panel of the LH5210 and LH5410, set the VOLUME control to “0”
(fully counterclockwise) and set BASS, MID and TREBLE to their center “5”
position. Finally, set BRITE and LIMITER switch to their “Out” position.
* Bass guitars that have active circuitry normally require a battery for the
circuitry to be functional.
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 Limiter control
to reduce the amount of subharmonic (extremely low frequency) signal.
4. Press the front panel Power switch in order to turn on the amplifier. After
approximately three seconds, you’ll hear a click, indicating that the relay
protection circuitry has completed cycling and that power to the system has
been provided.
5. Set the output of your bass to maximum and then, while playing, slowly
turn the VOLUME control up until the desired level is achieved. If you hear
distortion even at low amplifier VOLUME control, back off the output of your
bass (or check for a faulty cable).
