Listen Technologies LT-700-150 - Manual (Page 21)

17
LT-700 Troubleshooting
Troubleshooting
The LT-700 has no power
Make sure the unit has fully charged batteries, or has a Listen LA-208 wall transformer connected to it.
Press the ON button. If this does not work, try a different set of batteries. Make sure the batteries are
installed correctly.
There is no audio
Make sure the MUTE/TALK switch is in the TALK position. Make sure you have the microphone plugged
all the way in to the input jack. Make sure you are using a Listen approved microphone (see list on
page 7). If you are using the line input, make sure you have connected a line level, unbalanced input
at the ring of the connector.
The audio is distorted
Make sure you are using an approved Listen microphone. Try using a different mic sensitivity switch
setting (the switch is located inside the battery compartment of the unit). If you are using a line level
input, try turning down the level of the input. If you are using any equipment that does not have SQ
capability, turn off SQ in the LT-700.
There is hum in the audio
The microphone may be too close to a transformer. Try moving around and see if the hum goes away.
The microphone level is low
The microphone must be in close proximity to the person who is speaking. If this does not work, try using
a head-worn microphone. The mic sensitivity switch may be on the wrong setting, see page 7. Try a
different setting (the switch is located inside the battery compartment). Some microphones have
directional pickups, ensure that the microphone in use is oriented and positioned properly (pointing at
the speakers mouth).
The audio doesn’t have much fidelity
If your receivers all have SQ capability, activate SQ in all units by moving their switches to the ON
position. In the LT-700 and all SQ-equipped receivers, the SQ switch is located inside the battery
compartment. See page 14 for more information.
There is too much noise
This is most likely because the microphone is not close enough to the speakers mouth, and it is picking
up background noise. Try positioning the microphone closer or try using a microphone that is direc-
tional (such as a head-worn mic). If you are using a narrow band channel, try switching to a wide band
channel. Try another setting on the mic sensitivity switch (located inside the battery compartment).
Ensure the microphone is not brushing up against anything. See page 7 for more information.
There is interference
Try different frequencies until you find a clear channel.
I cannot pick up the signal on the receiver
Make sure the transmitter and the receiver are on the same frequency band and channel.
I can pick up the signal on the receiver, but it sounds like it’s not tuned in
Check to make sure the transmitter and receiver are on exactly the same channel number / letter. If
using another brand of receiver refer to Listen’s Frequency Chart on page 16).