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ATM350
Cardioid Condenser Clip-on Instrument Microphone
Features
• Attaches to brass, reeds, piano, acoustic bass, snare, toms
and violin
• Crisp, clear, well-balanced response, even at high SPLs
• Low-prole design for minimum visibility
• Cardioid polar pattern reduces pickup of sounds from the sides
and rear, improving isolation of desired sound source
• 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
• Switchable 80 Hz high-pass lter minimizes pickup of undesired
low-frequency sounds
• Interchangeable elements available for hypercardioid and
omnidirectional polar patterns
• Also available in a wireless model, ATM350cW
ATM350 Description
The ATM350 is a xed-charge clip-on condenser microphone with a
cardioid polar pattern. It is designed for use in professional live-sound and
studio applications.
When used with the included instrument mount, it provides accurate,
consistent pickup of trumpet and saxophone and many other musical
instruments. When used with the included violin mount, it provides
outstanding pickup of violin and other stringed instruments.
The microphone requires 11V to 52V phantom power for operation.
artist series live sound microphones
ATM350cW Description
The microphone is also available in a wireless model, the ATM350cW.
The ATM350cW features a 1.4 m (55") miniature cable terminated with
a locking 4-pin connector for use with Audio-Technica UniPak® bodypack transmitters. No power module is included (or required) with the
ATM350cW. The ATM350cW dimensions, polar pattern and included
instrument mount and violin mount are identical to those of the ATM350.
Operation and Maintenance
The ATM350 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 lter provides easy switching from a at
frequency response to a low-end roll-off. The roll-off position reduces
the pickup of low-frequency ambient noise (such as trafc, air-handling
systems, etc.), room reverberation and mechanically coupled vibrations.
To engage the high-pass lter, slide the switch toward the “bent” line.
The included UniMount® instrument mount entirely surrounds the
microphone with foam to isolate the microphone from noise transmitted
from the instrument, shield the element against accidental damage,
and provide an efcient wind screen. The exible arm permits aiming
the microphone in any direction, while a cable strain relief reduces
cable-transmitted noise and cable damage. The rubber grip spring clamp
securely holds the microphone to the instrument without marring the
surface.
To use the included 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 ap 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.
The cardioid polar pattern of the microphone is more sensitive to sound
originating directly in front of the element, making it useful for controlling
feedback and reducing pickup of unwanted sounds.
The microphone includes a 4 m (13.1') permanently attached miniature
cable. Its free end connects to the provided AT8542 power module via a
TA3F-type connector. The output of the power module is a 3-pin XLRMtype connector.
A switch in the power module permits choice of at response or lowfrequency roll-off (via integral 80 Hz high-pass lter) to help control
undesired ambient noise.
The microphone is enclosed in a rugged housing with a low-reectance
black nish. A power module, an instrument mount, a violin mount and a
soft protective pouch are included.
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Specications
Element
Polar pattern
Frequency response
Low frequency roll-off
Open circuit sensitivity
Impedance
Maximum input sound level
Dynamic range (typical)
Signal-to-noise ratio1
Phantom power requirements
Switch
Weight
Dimensions
Output connector
Cable(s)
Optional interchangeable elements
Audio-Technica case style
Accessories furnished
In the interest of standards development, A.T.U.S.
offers full details on its test methods to other industry
1 Pascal = 10 dynes/cm
1
Typical, A-weighted, using Audio Precision System One.
Specications are subject to change without notice.
professionals on request.
2
= 10 microbars = 94 dB SPL
ATM350
Fixed-charge back plate, permanently
polarized condenser
Cardioid
40-20,000 Hz
80 Hz, 12 dB/octave
–49 dB (3.5 mV) re 1V at 1 Pa
50 ohms
149 dB SPL, 1 kHz at 1% T.H.D.
122 dB, 1 kHz at Max SPL
67 dB, 1 kHz at 1 Pa
11-52V DC, 3.5 mA typical
Flat, roll-off
Microphone: 14.5 g (0.5 oz)
Power module: 81.2 g (2.9 oz)
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
Power module: Integral 3-pin XLRM-type
4.0 m (13.1') long (permanently attached
to microphone), 3.2 mm (0.13") diameter,
2-conductor shielded cable with
TA3F-type connector
UE-O omnidirectional (360°)
UE-H hypercardioid (100°)
M36
AT8542 power module; AT8418 UniMount®
microphone instrument mount; AT8468
violin mount; soft protective pouch
frequency response: 40–20,000 Hz
10 dB
100
12" or more on axis
Roll-off
330˚
200
Frequency in Hertz
0˚
180˚
500
30˚
150˚
5k
2k
1k
60˚
120˚
10k
90˚
LEGEND
200 Hz
1 kHz
5 kHz
8 kHz
50
LEGEND
polar pattern
300˚
270˚
240˚
210˚
SCALE IS 5 DECIBELS PER DIVISION
Audio-Technica Corporation
audio-technica.com ©2015 Audio-Technica P#1423-11090B P52566
Response in dB
20k