Audio-Technica ATW-1311 Specifications

Description

The MT830R is a subminiature condenser
microphone intended to be worn on the
clothing of performers for excellent yet unob­trusive sound pickup. The wide-range capability
of the MT830R ensures clean, accurate repro­duction with high intelligibility for lecturers,
singers, stage and TV performers, as well as
musical instruments. Its small size makes the
MT830R ideal for use in applications where
minimum visibility is required.

The MT830R is intended for use in profes­sional applications where remote power is
available. It will accommodate any external
phantom power source supplying from 9V to
52V DC, such as the Audio-Technica CP8508
single-channel 24V phantom power supply
and the CP8506 four-channel 48V phantom
power supply.

The microphone element is enclosed in a
rugged housing with low-reflectance finish.
Internal construction is designed to minimize
handling and clothing noise. A 25' (7.6 m)
cable is provided between the microphone
and remote power module. A clothing clip
and accessory windscreens are also provided.

Operation and Maintenance

Output is low impedance balanced. The
power module output connector mates with
XLRF-type cable connectors. The balanced
signal appears across Pins 2 and 3, while the
ground (shield) connection is Pin 1. Output is
phased so that positive acoustic pressure
produces positive voltage at Pin 2 in accor­dance with industry convention.

DC phantom power (from 9V to 52V) must be
applied equally to Pins 2 and 3, with the
ground for the power supply connected to
Pin 1. This connection is standard for almost
all input electronics which supply phantom
power, including the recommended CP8506
and CP8508 power supplies.

The microphone can be clipped to a tie, lapel,
or dress using the clasp provided. An open-pore
foam windscreen attaches to the front of the
microphone, effectively reducing wind noise
and “popping” when used extra close.

While a modern condenser microphone is
not unduly sensitive to the environment,
temperature extremes can be harmful.
Exposure to high temperature can result in
gradual and permanent reduction of the out­put level. Avoid leaving the microphone in the
open sun or in areas where temperatures
exceed 110° F (43° C) for long periods of time.
Extremely high humidity should also be
avoided.

Architects and Engineers Specifications

The microphone shall be a fixed-charge con­denser with an omnidirectional polar pattern and
a frequency response of 30 Hz to 20,000 Hz.
It shall be capable of operating from an external
9V to 52V DC phantom power source. Nominal
open-circuit output voltage shall be 19.9 mV
at 1 kHz, 1 Pascal. Output with remote power
module shall be low impedance balanced
(200 ohms).

The microphone shall have a permanently­attached 25' (7.6 m) miniature cable between
the microphone and remote power module.
The remote power module shall terminate in
a 3-pin XLRM-type connector.

The microphone shall be mountable in an
included clothing clip. The microphone shall
be 0.62" (15.8 mm) long with a width of

0.33" (8.3 mm) and a depth of 0.19" (5.0 mm).
The microphone weight shall be 0.05 oz (1.3
grams). Finish shall be low-reflectance black.

The Audio-Technica MT830R is specified.

MT830R

SUBMINIATURE
OMNIDIRECTIONAL
CONDENSER
MICROPHONE

Frequency Response

50

LEGEND

500

200100

Frequency in Hertz

12" or more on axis

2k

1k

10k

20k

5k

10 dB

Response in dB

MT830R SPECIFICATIONS

†

ELEMENT Subminiature, fixed-charge back plate,

permanently polarized condenser

POLAR PATTERN Omnidirectional
FREQUENCY RESPONSE 30-20,000 Hz
OPEN CIRCUIT SENSITIVITY –34 dB (19.9 mV) re 1V at 1 Pa*
IMPEDANCE 200 ohms
MAXIMUM INPUT SOUND LEVEL 131 dB SPL, 1 kHz at 1% T.H.D.
DYNAMIC RANGE (TYPICAL) 107 dB, 1 kHz at Max SPL
SIGNAL-TO-NOISE RATIO

1

70 dB, 1 kHz at 1 Pa*

PHANTOM POWER REQUIREMENTS 9-52V DC, 2 mA typical
WEIGHT (LESS CABLE AND ACCESSORIES)

MICROPHONE 0.05 oz (1.3 grams)
POWER MODULE 1.81 oz (51.4 grams)

DIMENSIONS

MICROPHONE 0.62" (15.8 mm) long,

0.33" (8.5 mm) wide, 0.19" (5.0 mm) thick

POWER MODULE 3.13" (79.5 mm) long, 0.83" (21.0 mm) diameter
OUTPUT CONNECTOR Integral 3-pin XLRM-type
CABLE 25' (7.6 m) long (permanently attached to micro-

phone), 0.10" (2.5 mm) diameter, 2-conductor,
shielded cable with TA3F output connector

ACCESSORIES FURNISHED AT8533 power module; clothing clip; windscreens

†

In the interest of standards development, A.T.U.S. offers
full details on its test methods to other industry
professionals on request.

* 1 Pascal = 10 dynes/cm

2

= 10 microbars = 94 dB SPL

1

Typical, A-weighted, using Audio Precision System One.

Optional Accessories:

• AT8130 subminiature foam windscreens
(packet of three).

• CP8201 line matching transformer
(Lo-Z to 50,000 ohms).

• AT8202 adjustable in-line attenuator for use
with low-impedance microphones.

• AT8314 2-conductor, shielded, vinyl- jacketed,
broadcast-type cable with XLRF-type connector
at microphone end, XLRM-type connector at
equipment end. Available in 10', 20', 25', 30',
50' & 100' lengths.

• CP8506 four-channel 48V phantom power
supply (AC powered).

• CP8508 single-channel 24V phantom power
supply (AC powered).

MT830R

Polar Pattern

Dimensions

Audio-Technica U.S., Inc., 1221 Commerce Drive, Stow, Ohio 44224
Audio-Technica Limited, Old Lane, Leeds LS11 8AG England

Form No. 0310-0844 -02-B/W P50651-02 © 1996 Audio -Technica U.S., Inc. Printed in U.S.A.

One-Year Limited Warranty

Audio-Technica microphones and accessories pur­chased in the U.S.A. are warranted for one year from
date of purchase by Audio-Technica U.S., Inc. (A.T.U.S.)
to be free of defects in materials and workmanship. In
event of such defect, product will be repaired promptly
without charge or, at our option, replaced with a new
product of equal or superior value if delivered to
A.T.U.S. or an Authorized Service Center, prepaid,
together with the sales slip or other proof of purchase
date.

Prior approval from A.T.U.S. is required for

return.

This warranty excludes defects due to normal
wear, abuse, shipping damage, or failure to use product
in accordance with instructions. This warranty is void in
the event of unauthorized repair or modification.

For return approval and shipping information,

con­tact the Service Department, Audio-Technica U.S., Inc.,
1221 Commerce Drive, Stow, Ohio 44224.

Except to the extent precluded by applicable state law,

A.T.U.S. will have no liability for any consequential,
incidental, or special damages; any warranty of
merchantability or fitness for particular purpose
expires when this warranty expires.

This warranty gives you specific legal rights, and you
may have other rights which vary from state to state.

Outside the U.S.A., please contact your local dealer
for warranty details.

SHIELD

RED WIRE

WHITE WIRE

1
3
2

XLRM-Type Plug Wiring

Low Impedance Balanced

330

300

270

240

210

LEGEND

200 Hz

1 kHz
5 kHz
8 kHz

SCALE IS 5 DECIBELS PER DIVISION

same as 1 kHZ

0.33"

8.3 mm

0.62"

15.8 mm

TIE CLIP

0

180

30

60

90

120

150

25.0

7.6 m

0.10"

2.5 mm

0.41"

10.5 mm

3.13"

79.5 mm

0.83"

21.0 mm