Audio-Technica ATM350 - Manual

• Low-profile design for minimum visibility

• Attaches to brass, reeds, piano, acoustic bass, snare, toms, and

violin

• UniMount

®

clip permits accurate positioning, provides shock

resistance and protects element

• Unique violin mount permits unobtrusive placement of microphone

between the instrument's bridge and tailpiece

• Crisp, clear, well-balanced response, even at high SPLs

• Cardioid polar pattern reduces pickup of sounds from the sides

and rear, improving isolation of desired sound source

• Interchangeable elements available for hypercardioid and

omnidirectional polar patterns

• Corrosion-resistant contacts from gold-plated XLRM-type

connector

• Rugged, all-metal design and construction for years of trouble-free

use

The ATM350 is intended for use in professional applications where
remote power is available. It requires 11V to 52V DC phantom
power, which may be provided by a mixer or console, or by a
separate, in-line source such as the Audio-Technica AT8801 single-
channel or CP8506 four-channel phantom power supplies.

An integral 80 Hz high-pass filter provides easy switching from a flat
frequency response to a low-end roll-off. The roll-off position reduces
t h e p i c k u p o f l o w - f r e q u e n c y a m b i e n t n o i s e ( s u c h a s t r a f f i c ,
air-handling systems, etc.), room reverberation and mechanically
coupled vibrations.

O u t p u t f r o m t h e p owe r m o d u l e ' s X L R M - t y p e c o n n e c t o r i s l ow
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.

To use the violin mount, place the microphone in the violin mount's
elastic mic holder. Open the hook & loop fastener; pass the hook
side of the open fastener beneath the strings between the bridge
and the tailpiece. Close the fastener flap around the strings. The
microphone should be on top, with the element facing the bridge
(away from the tailpiece).

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.

Audio -Technica U.S., Inc.,

1221 Commerce Drive, Stow, Ohio 44224

Audio -Technica Limited,

Old Lane, Leeds LS11 8AG England

www.audio-technica.com

P51801 ©2006 Audio -Technica U.S., Inc. Printed in China

ATM350

ATM350 SPECIFICATIONS

†

ELEMENT

Fixed-charge back plate
permanently polarized condenser

POLAR PATTERN

Cardioid

FREQUENCY RESPONSE

40-20,000 Hz

LOW FREQUENCY ROLL-OFF

80 Hz, 12 dB/octave

OPEN CIRCUIT SENSITIVITY

–49 dB (3.5 mV) re 1V at 1 Pa*

IMPEDANCE

50 ohms

MAXIMUM INPUT SOUND LEVEL

149 dB SPL, 1 kHz at 1% T.H.D.

DYNAMIC RANGE

(typical)

122 dB, 1 kHz at Max SPL

SIGNAL-TO-NOISE RATIO

1

67 dB, 1 kHz at 1 Pa*

PHANTOM POWER REQUIREMENTS

11-52V DC, 3.5 mA typical

SWITCH

Flat, roll-off

WEIGHT

(less cable and accessories)

MICROPHONE

14.5 g (0.5 oz)

POWER MODULE

81.2 g (2.9 oz)

DIMENSIONS

MICROPHONE

37.8 mm (1.49") long,
12.2 mm (0.48") diameter

POWER MODULE

92.9 mm (3.66") long,
18.9 mm (0.74") diameter

OUTPUT CONNECTOR

Integral 3-pin XLRM-type

(power module)

CABLE

4.0 m (13.1') long (permanently
attached to microphone), 3.2 mm
(0.13") diameter, 2-conductor
shielded cable with TA3F-type
connector

ACCESSORIES FURNISHED

AT8542 power module; AT8418
UniMount

®

microphone instrument

mount; AT8468 violin mount; soft
protective pouch

†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.

Specifications are subject to change without notice.

CARDIOID CONDENSER

CLIP-ON MICROPHONE

8 kHz

Polar Pattern

SCALE IS 5 DECIBELS PER DIVISION

LEGEND

200 Hz

1 kHz
5 kHz

Frequency in Hertz

LEGEND

12" or more on axis

Roll-off

Frequency Response

Response in dB