Operation Manual

9
Setting Up and Using The Model LH500 and LH1000
5. Press the front panel Power switch in order to turn on the amplifier. After
approximately 20 seconds, you’ll hear a click, indicating that the relay protection
circuitry has completed cycling and that power to the system has been provided.
6. 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).
7. If you are using the LH1000 with two different speaker enclosures, for example
a 115 and a 410 you can use the BALANCE control to adjust the proper level
of each. Since the two cabinets will likely have different frequency responses,
adjusting the BALANCE will function like another tone control. Since the
BALANCE control only works when the LH1000 is operating in Dual Parallel mode,
be sure the BRIDGE mode switch is off or NOT set to BRIDIGE.
8. When you have settled a good level, the next step is to adjust the three (BASS,
MID and TREBLE equalizer) tone controls to taste. For more information, see the
“About Equalization” section on page 10 of this manual. When you get a great
setting that will complement your instrument and playing style, it’s a good idea
to write it down for future use.
9. Next, experiment with the BRITE circuit by setting the switch down to the “on”
position. You’ll notice a lift in the high frequency response, which you can use
to enhance your tone if you're snapping strings or just trying to cut through the
back line.
10. Now try out the Model LH500 and LH1000 Limiter circuitry. Activate it by
pressing the Limiter switch in to the “on” position. The LIMITER LED will illuminate
when the Limiter circuit is active. When you engage the Limiter, you’ll hear peak
signals (such as string slaps and pulls) begin to sound increasingly “squashed,”
relative to the lower-level signals produced by standard playing. The result will
be a decreased dynamic range but an overall leveling of signal throughout the
full pitch range of your instrument.
11. If you’re using an external signal processor, turn your Hartke amplifier off
momentarily and then connect a standard audio cable between the Effect Send
jack and your effects processor input and another standard audio cable between
the Effect Return jack and your effects processor output (if required, multiple
effects processors can be daisy-chained together, output to input). Then turn the
amp back on and play your bass while adjusting the controls of your outboard
effects processor(s). For best results, set both the input and output gain of all
connected effects processor(s) to 0 dB (unity gain), so that there is no increase or
decrease in level whether the effects are switched in or out.
If you have followed all the steps above and are still experiencing difficulties, call
Samson Technical Support (516-932-1062) between 9 AM and 5 PM EST.