Audio-Technica ATM350 User Manual

ATM350

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

CARDIOID CONDENSER CLIP-ON MICROPHONE

• 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 singlechannel 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 the pickup of low-frequency ambient noise (such as traffic, air-handling systems, etc.), room reverberation and mechanically coupled vibrations.

Output from the power module's XLRM-type connector 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.

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.

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

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

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

Specifications are subject to change without notice.

= 10 microbars = 94 dB SPL

Audio-Technica U.S., Inc., 1221 Commerce Drive, Stow, Ohio 44224

Audio-Technica Limited, Old Lane, Leeds LS11 8AG England

www.audio-technica.com