Operating the LightMic
a. The LightMic has a built-in microphone.
Once the transmitter is switched on, the
microphone is activated.
b. The LightMic may be used as a hand-
held mic or a hands-free pendent style
microphone by clipping the LightMic
on the supplied lavaliere cord.
Place the lavaliere cord around your neck,
and adjust the length so the top of the
LightMic rests on the collar bone.
c. On the side of the LightMic is the Chan-
nel select switch. Slide the switch to
the “A” position. (If a second LightMic
is used for simultaneous operation, set
one LightMic to Channel A and the
second LightMic to Channel B.)
d. Slide the ON/OFF switch on the side of
the LightMic to ON. The triangle-
shaped light on the front glows red,
indicating the microphone is charged
and ready for use.
e. When the LightMic transmitter
ON/OFF switch is slid to OFF, the
microphone power is turned off.
Adjusting Volume
Volume is set by adjusting the volume control
on the LES 780iR.
a. Ensure the LES 780iR is switched ON.
b. Ensure the LightMic is switched ON and
the triangle-shaped LED on the front of
the LightMic is glowing red. The IR 1
LED next to the A VOLUME knob on
the LES 780iR will also glow, indicating
that the LES 780iR is receiving the
LightMic signal and is ready for use.
c. Adjust the volume of the receiver by
turning A VOLUME clockwise.
d. Speak at a normal level and slowly
turn the volume knob clockwise to
increase the loudness of the speaker(s)
until the sound level is adequate for
the room.
[note:]
Feedback or “squealing” may occur if the
volume is set too high. Reducing the loudness
of the speakers with the volume control
usually eliminates feedback.
Operating two microphone/
transmitters simultaneously
The LES 780iR has two independent
receivers—Channel A and B. This makes it
possible to operate two microphones simul-
taneously. Follow the instructions below
when using a second microphone:
a. Set each microphone/transmitter to
separate channels. For example if
you are using two LightMics, set one
to Channel A and the other to
Channel B. If you are using one
LightMic and one HM-70 handheld
microphone, set the LightMic to
Channel A and the HM-70 to
Channel B.
When the LES 780iR is receiving a signal
from the microphone/transmitters:
• IR 1 indicator to the left of the A
volume knob will glow red on the
LES 780iR when Channel A on the
LightMic is selected
• The IR 2 indicator light to the left of the
B VOLUME knob will glow red
when Channel B is selected.
• When simultaneously operating two
microphone/transmitters, both
indicator lights will glow.
System Operation:
Powering the LES 780iR
a. Both front panel microphone volume controls
(A VOLUME and B VOLUME) are turned all the
way down (fully counter-clockwise).
b. Individual speaker switches are in the
on/up position.
c. The LES 780iR is connected to a power source. Use the
en closed AC/DC power adaptor to plug into a standard
electrical outlet and connect the other end to the DC
POWER jack on the back panel.
d. Individual SPEAKERS volume knobs on
back panel are set at a 12 o’clock position.
Check that:
d. The power switch located on the left side of the
front panel of the LES780iR is in the up position
(ON). The red POWER light on the POWER switch
will light when the LES 780iR is on.
a
b
c
d
e
[11]
[8]
