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Questions
& Answers
Questions about your FP410E installation? This section
lists the most common questions asked about Shure’s auto-
matic microphone systems. Maybe your question is among
the
following. If not, contact Shure’
s Customer Service Depart
-
ment.
Q.
Why don’t I get any sound output from my FP410E?
A. Assuming that your power amp, tape deck, speakers, etc.
are good, possibly it’
s because:
• The
Channel or Master Gain controls are turned down,
•
A microphone is not connected,
•
A rear–panel Mic/Line input or output switch or the Phan
-
tom On–Of
f switch is improperly set,
•
The FP410E isn’t plugged in or doesn’t have batteries
in
-
stalled,
or
•
The Power switch isn’t on.
Check these items and make the required correction.
Q. Still doesn’t work. Why?
A.
Maybe you have
a defective microphone or cable. While lis
-
tening to headphones plugged into one of the front–panel
Phone jacks, try replacing the suspect microphone or cable
with
one known to be good.
Q. Why does a microphone turn on or off erratically, causing
speech
dropouts?
A.
Excessive room noise (such as from
air–handling or audio–
visual
equipment) can be a cause. Reduce the room noise,
the
proximity
of the noise to any mic, and/or the talker–to–mic dis
-
tance. A loud talker close to their microphone or with their
Channel
Gain control set too high can sometimes inhibit prop
-
er microphone activation by a “weaker” talker who is too far
from their microphone or has their Channel Gain control set
too
low
. Balance the microphones by repositioning and/or re
-
setting
the Channel Gain controls
in accordance with the
Op-
eration
section.
IMPORTANT: Best results are generally obtained when the
Last Mic Lock–On is
not
defeated and the Of
f–Attenuation is
13 dB (modifiable function switches up). Difficult situations
may
be aided by changing the Hold Time from 0.4 to 1.0 sec
-
ond
(modifiable function switch down).
Q. Why am I getting howling through my loudspeakers?
A.
For
the same reason that howling is present in any P
A sys
-
tem:
your mics are picking up the speaker sound and reampli
-
fying
it. Move the speakers or
mics, or turn down the gain con
-
trols,
to avoid the howling. Automatic operation
does
provide
more output level before howling than manual operation, but
the system still can howl.
Q. Why does the FP410E output sound distorted?
A.
The Channel, Master or Phones Gain control may be set
too
high.
Set the Channel Gain according to the
Operation
section.
Set
the
Master Gain to avoid excessive red LED indications on
the
Output Level meter
, or switch the Limiter in. T
urn down the
Phones
control. Check the following equipment levels.
Q.
Why does the speech level go up when I switch from Manu
-
al
to Automatic operation?
A.
This is normal and proper
operation for any automatic mix
-
er.When switched to Automatic, the FP410E attenuates any
input
channel not
being used. Internally
, this removes the inac
-
tive
channels from the FP410E
mix bus. This action increases
the
perceived level of any
active
input
channel. For example,
the audio gain increase will be 6 dB when going from four to
only
one activated microphone channel.
Q. Why is one of my four mics very noisy?
A.
Assuming the mic
is operating properly (you can check this
by substituting with another mic), you probably have a con-
stant
noise source such as
air–moving equipment or a defec
-
tive fluorescent light ballast in the trouble area. This ambient
noise source can be unnoticed until it’s picked up by a mic:
then
it’
s extremely annoying. If you can’t repair
, turn of
f or lower
the
noise source, try relocating the mic to eliminate or at least
lower
the noise. If this is not possible, use the
FP410E in the
Manual mode to avoid microphone activation problems and
accept
the noisy output.