Audio-Technica Corporation MTU301 User Manual
mtu301 Owner’s Manual
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6. Confirm mute/live audio status. When the audio is on, the Live Audio LED on the top of the
mtu301 glows green. To change mute status, depress the body‐pack transmitter’s push‐button
switch. When the audio is muted, the Mute LED glows red. (See Audio/Mute LED, page _ .)
switch. When the audio is muted, the Mute LED glows red. (See Audio/Mute LED, page _ .)
7. Confirm battery status. Low battery is indicated by blinking blue power light (at the top of the
mtu301). (See Low Battery Warning, page _.)
8. With the aci707 on and connected as desired, the drm141 connected, and the mtu301 Body‐
pack Transmitter on, speak into the microphone and verify audio operation. Set the input levels
on your connected equipment as needed. You are now set to use the system.
on your connected equipment as needed. You are now set to use the system.
9. Turn the transmitter off when not in use. Remove the batteries if the transmitter is not to be
used for a long period of time.
mtu301
Body-pack Transmitter Controls
Body-pack Transmitter Controls
1. Battery Selection and Installation
The mtu301 Body‐pack Transmitter operates on two AA batteries (standard alkaline or NiMH
rechargeable). Please make certain that your batteries are fresh or fully charged. Two AA 1.5V alkaline
batteries are included with the mtu301.
rechargeable). Please make certain that your batteries are fresh or fully charged. Two AA 1.5V alkaline
batteries are included with the mtu301.
a. Open the battery door by sliding the latch toward the top of the unit.
b. Insert two fresh or fully charged AA batteries into the battery compartment, being
b. Insert two fresh or fully charged AA batteries into the battery compartment, being
careful to observe correct polarity as marked on the battery holder.
c. Close the battery door after step 2 is complete.
2. Channel Address Selection
Channel address selection is via a rotary switch inside the battery compartment. The switch is numbered
for channel addresses 1 through 14; these channel addresses correspond to the audio outputs on the
aci707 unit. Use a small flat‐blade screwdriver to select a different channel address for each transmitter
(you cannot have two transmitters on the same channel address). The Audio Control Interface (aci707)
comes from the factory set for channel addresses 1 through 7. If you wish to use it for channel addresses
8 through 14, change the DIP switch on the back panel of the aci707 as described in the SpectraPulse®
Owners Manual.
for channel addresses 1 through 14; these channel addresses correspond to the audio outputs on the
aci707 unit. Use a small flat‐blade screwdriver to select a different channel address for each transmitter
(you cannot have two transmitters on the same channel address). The Audio Control Interface (aci707)
comes from the factory set for channel addresses 1 through 7. If you wish to use it for channel addresses
8 through 14, change the DIP switch on the back panel of the aci707 as described in the SpectraPulse®
Owners Manual.
3. Mic Gain Switch
Adjust audio gain with this 3‐position gain switch inside the battery compartment, provided for
situations that demand extra sensitive pickup. Begin with the switch in the 0 dB setting; adjust to +6 dB
or +12 dB as needed.
situations that demand extra sensitive pickup. Begin with the switch in the 0 dB setting; adjust to +6 dB
or +12 dB as needed.
4. Audio Input Jack
The mtu301 Body‐pack Transmitter is equipped with an audio input jack for connection to any Audio‐
Technica lavalier and headworn microphone pre‐terminated with a compatible input connector; these
wireless microphone product numbers end with the designation “cW”.
Technica lavalier and headworn microphone pre‐terminated with a compatible input connector; these
wireless microphone product numbers end with the designation “cW”.
5. Power On/Off