Samson Audio dB1500a Manuel Du Propriétaire page 12

Operating the dB1500a and dB1800a
dB1500a and dB1800a STEREO SUB WITH POWERED SATELLITES
Two dB1500a or dB1800a's can be used with any pair of powered full range enclosures like the Samson dB500a, XP200
and XP300. Below is a typical system set-up using two dB1500a and dB1800a's with a mixer and a pair of powered sat-
ellite loudspeakers. The dB1500a and dB1800a's inputs and outputs utilize industry standard XLR connectors. For a
detailed wiring diagram, see the section "dB1500a and dB1800a Connections" on page 11. Follow the steps below the
diagram to set up your system.
• Connect the mixer's left output to the left-side dB1500a
and dB1800a's left input and the mixer's right output to
the right-side dB1500a and dB1800a's right input. Now
connect the left-side dB1500a and dB1800a's left output
to the input of the left powered satellite, and right-side
dB1500a and dB1800a's right output to the input of the
right satellite. Switch both the Stereo/Mono selector
switches to the Stereo position.
• Now adjust the crossover SWEEP to the desired frequen-
cy. For the db500a select 60-80Hz and for the Expedition
XP200 & XP300 select 80-100Hz. If you are using another
brand of powered speaker as satellites with the dB1500a
and dB1800a, consult their respective owners manuals
for the recommended crossover point.
• Lower your mixer's master outputs to all the way off.
Now set the level of your powered satellites up to the
normal operating level. Run an audio signal (like some
music from a CD) through your mixer and raise the level
to a comfortable listening volume. Now slowly raise the
dB1500a and dB1800a Level control and listen to the
low frequency output. Adjust the dB1500a and dB1800a
to the level to low frequency output that you like. Now
when you raise and lower your mixer's output, the
dB1500a and dB1800a and satellites will track at the same
relative volume.
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