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MT830R
Omnidirectional Condenser Lavalier Microphone
Features
• Clip-on lavalier mic provides high intelligibility for lecturers,
stage/TV performers and singers
• Designed to be worn as a lavalier or hidden in loose clothing or in
the hair
• Wide-range capability ensures clean, accurate reproduction
• Small size provides excellent yet unobtrusive sound pickup
• Rugged design and construction for reliable performance
• UniSteep
®
lter provides a steep low-frequency attenuation to
improve sound pickup without affecting voice quality
• Wireless models offered in black and beige (-TH)
• Also available in wireless models (without power module)
terminated for use with all Audio-Technica UniPak
®
wireless
systems and many other manufacturers' wireless systems
MT830R Description
The MT830R is a miniature clip-on/lavalier condenser microphone
with an omnidirectional polar pattern. It is designed for quality sound
reinforcement, professional recording, television and other demanding
sound pickup applications.
The microphone is intended to be worn on the clothing or hidden in props
for excellent yet unobtrusive sound pickup. The wide-range capability
of the microphone ensures clean, accurate reproduction with high
intelligibility for speakers and presenters as well as for instrument pickup.
Its small size makes it ideal for use in applications where minimum
visibility is required.
The microphone requires 11V to 52V phantom power for operation.
The microphone includes a 7.6 m (25') permanently attached miniature
cable. Its free end connects to the provided AT8538 power module via a
TA3F-type connector. The output of the power module is a 3-pin XLRM-
type connector.
A recessed switch in the power module permits choice of at response
or low-frequency roll-off (via integral 80 Hz high-pass UniSteep
®
lter) to
help control undesired ambient noise.
The microphone comes equipped with a power module, a clothing clip
and windscreens. All MT830R models are available with a low-reectance
black nish; selected models are also available in beige.
Wireless Models Description
The microphone is also available in a variety of wireless models, including
the MT830cW. The MT830cW features a 1.4 m (55") permanently attached
miniature cable terminated with a locking 4-pin connector for use with
Audio-Technica UniPak
®
body-pack transmitters. Models are also available
in a variety of terminations for use with many other manufacturers’
wireless systems. No power module is included (or required) with the
wireless models. The wireless models’ dimensions, polar pattern and
included accessories are otherwise identical to those of the MT830R.
The MT830cW is also available unterminated as the MT830c.
Cable Terminations
MT830cW, MT830cW-TH Terminated with locking 4-pin
connector for use with
Audio-Technica
®
UniPak
body-pack transmitters
MT830cT5, MT830cT5-TH Terminated for Lectrosonics
®
wireless systems using
TA5F-type connector
MT830c Unterminated
Model numbers ending in “TH” are beige.
Audio-Technica
®
is a registered trademark of Audio-Technica. Other product and company names
mentioned herein may be trademarks and/or service marks of their respective owners.
Operation and Maintenance
The MT830R requires 11V to 52V phantom power for operation.
Output is low impedance (Lo-Z) balanced. The signal appears across Pins
2 and 3; Pin 1 is ground (shield). Output phase is “Pin 2 hot”— positive
acoustic pressure produces positive voltage at Pin 2.
To avoid phase cancellation and poor sound, all mic cables must be wired
consistently: Pin 1-to-Pin 1, etc.
An integral 80 Hz high-pass UniSteep
®
lter provides easy switching from
a at frequency response to a low-end roll-off. The roll-off position reduces
the microphone’s sensitivity to popping in close vocal use. It also reduces
the pickup of low-frequency ambient noise (such as trafc, air-handling
systems, etc.), room reverberation and mechanically coupled vibrations. To
engage the UniSteep
®
lter, use the end tip of a paperclip or other small
pointed instrument to slide the switch toward the “bent” line.
For use as a lavalier, attach the microphone about six inches below the
chin. Anticipate movements that may cause the microphone to rub against
or be covered by clothing, and position the microphone to avoid it.
Avoid leaving the microphone in the open sun or in areas where
temperatures exceed 110° F (43° C) for extended periods. Extremely high
humidity should also be avoided.
Architect’s and Engineer’s Specications
The microphone shall be a xed charge condenser. It shall have an
omnidirectional polar pattern and a frequency response of 30 Hz to
20,000 Hz. The microphone shall operate from an external 11V to 52V
DC phantom power source. It shall be capable of handling sound input
levels up to 135 dB with a dynamic range of 108 dB. Nominal open-circuit
output voltage shall be 14.1 mV at 1V, 1 Pascal. Output shall be low
impedance balanced (200 ohms).
The microphone shall have a 7.6 m (25') permanently attached miniature
cable terminating in a TA3F-type output connector. The output connector
shall connect to a TB3M-type jack on the included power module. The
power module shall contain a recessed switch to permit choice of at
response or 80 Hz low-frequency roll-off. The output of the power module
shall be a 3-pin XLRM-type connector.
The microphone shall be 15.8 mm (0.62") long. It shall have a width