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mtu301 Body-pack Transmitter
Installation & Operation
Thank you for purchasing the mtu301 Body-pack Transmitter, a component of Audio-Technica’s
award-winning SpectraPulse
®
Ultra Wideband Wireless Microphone System. Please follow the
information contained in this manual closely, and refer to the SpectraPulse
®
Owners Manual for
system operating instructions.
Note: Due to the highly directional nature of the SpectraPulse
®
system, two or more
drm141 Digital Receiver Modules must be used in systems utilizing the mtu301 Body-pack
Transmitter.
The mtu301 Body-pack Transmitter is optimized to work with a number of Audio-Technica lavalier
and headworn microphones pre-terminated with a compatible input connector; these wireless
microphone product numbers end with the designation “cW”.
The unit provides bias voltage for electret condenser microphones and features 9-hour battery
life. It also offers an on/off switch, a mute switch, and LEDs indicating power/mute and link
status as well as low-battery warning. Each mtu301 operates using 2 AA batteries. Standard
alkaline or NiMH rechargeable batteries can be used. With use of an Audio-Technica chg001
Charger available separately, NiMH rechargeable batteries recharge within the unit. They will
not overcharge.
1. Install batteries
• If you are using alkaline batteries:
a. Insert 2 fresh AA 1.5V alkaline batteries in the mtu301 Body-pack Transmitter.
(See Battery Selection & Battery Installation, page 6).
• If you are using rechargeable batteries:
a. Turn the mtu301 off; the unit must be off when batteries are being charged.
(See Power On/Off, page 6).
b. Insert two Nickel Metal Hydride (NiMH) AA rechargeable batteries in the mtu301
Body-pack Transmitter. (See Battery Selection & Battery Installation, page 6).
c. Plug the DC cable from the chg001 Charger (not included—available separately) into the
charging port on the side of the mtu301 unit; plug the chg001 Charger into a standard
wall outlet.
d. Confirm that the mtu301 yellow Charging LED (next to the charging port) is
illuminated; this will extinguish when charging is complete. A complete charge can
take up to four hours.
e. Disconnect the chg001 Charger when the charge is complete.
4