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Positioning the dB300a
Microphone Positioning - How to Reduce Feedback
Feedback is the annoying howling and squealing that is heard when the
microphone gets too close to the speaker and the volume is high. You get
feedback when the microphone picks up the amplified signal from the
speaker, and then amplifies through the speaker again, and then picks it up
again, and so on and so on. In general, it is always recommended that any
LIVE mic (a mic that’s on) is positioned behind the speaker enclosures. This
will give you the best level from your system before feedback. One possible
exception is when you are adjusting the sounds of the microphones, since
you want to listen in front of the speaker to hear properly. To do this, lower
your mixers MAIN VOLUME while setting the EQ and effect from in front of
the speakers. Once you have the sound you like, move the microphones to
behind the speakers and raise the Main volume.
Speaker Placement
Whenever possible, it is a good idea to raise the speakers above the heads of
the listening audience. The dB300a enclosures’ feature standard 1 3/8” pole
mount receptacles, which are compatible with speaker stands from a variety
of manufacturers. In a smaller setting like a school cafeteria, library, or a mall
kiosk, you can also use the dB300a in one of the tilt back monitor positions,
which will improve the projection of the speakers and may eliminate the
need for speaker stands.
Using the dB300a as a Floor Monitor
The dB300a is an ideal solution for stage
monitoring and thanks to its unique design,
two wedge monitor positions are possible.
When placed on its side, with the high fre-
quency horn facing to the left of the enclo-
sure, the dB300a is tilted at a 30 degree angle,
optimizing performance when used on a
large stage. When placed on its side with the
high frequency horn facing to the right of the
enclosure, the dB300a is tilted at a 45 degree
angle optimizing performance when used
on smaller stages. In a large stage monitor
system, several dB300a’s can be daisy-chained
together using the Line Output. In many
instances (when using the dB300a as a moni-
tor system) you may choose to use an exter-
nal equalizer like the Samson S Curve 131 to
increase the volume and reduce the chance of
feedback. In this case be sure to set the HIGH
and LOW EQ to the 12:00 or flat position.
dB
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dB
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NEAR FIELD FAR FIELD
ENGLISH
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