Samson EXL250 - Manual (Page 13)

Positioning the EXL250
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 enclo-
sures. 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 the 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
Expedition Express’ enclosures feature standard 1 3/8” pole mount receptacles, which are compatible with
speaker stands from a variety of manufacturers including the TS50 and TS100 from Samson. In a smaller set-
ting like a school cafeteria, library, or a mall kiosk, you can also use the Expedition Express in the tilt back posi-
tion, which will improve the projection of the speakers and may eliminate the need for speaker stands.
Positioning The Expedition Express
To get the best results from your PA system, it is important to carefully consider the placement of the speakers
and the position of the microphones that are being used. Correct placement of the speakers and microphones
will maximize the amount of level that you will achieve before any feedback occurs.
ENGLISH
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