Audio-Technica PRO 44 User Manual

PRO 44

Cardioid Condenser Boundary Microphone

Features

• Wide-range condenser element with low-mass diaphragm for superior performance

• Uniform cardioid polar pattern for maximum rejection of unwanted sounds

• Self-contained electronics eliminate need for external power module

• Rugged design and construction for reliable performance

• Low-prole design for minimum visibility

propoint® microphones

Architect’s and Engineer’s Specications

The microphone shall be a xed-charge condenser designed for use in surface-mount applications. It shall have a cardioid polar pattern with a uniform 120° angle of acceptance (cardioid in hemisphere above mounting surface) and a frequency response of 70 Hz to 16,000 Hz. The microphone shall operate from an external 9V to 52V DC phantom power source. It shall be capable of handling sound input levels up to 114 dB with a dynamic range of 86 dB. Nominal open-circuit output voltage shall be 56.2 mV at 1V, 1 Pascal. Output shall be low impedance balanced (100 ohms).

The microphone shall incorporate self-contained electronics, eliminating the need for an external power module. The microphone shall have a

7.6 m (25') output cable with TA3F-type to XLRM-type connectors.

The microphone shall have a maximum width of 73.0 mm (2.87"), a maximum length of 90.5 mm (3.56") and a maximum height of 15.5 mm (0.59"). Weight shall be 67 grams (2.4 oz). Finish shall be low-reectance black.

The Audio-Technica PRO 44 is specied.

Description

The PRO 44 is a wide-range miniature condenser microphone with a cardioid polar pattern. It is designed for surface-mount applications such as high-quality sound reinforcement and other demanding sound pickup situations.

The microphone requires 9V to 52V phantom power for operation.

The microphone's cardioid polar pattern provides a 120° angle of acceptance (cardioid in hemisphere above mounting surface).

The microphone includes a 7.6 m (25') output cable terminating in TA3Ftype and XLRM-type connectors.

The microphone’s rubber non-slip bottom pad minimizes mechanical coupling of surface vibration to the microphone. The microphone is enclosed in a rugged housing with a black nish.

Installation and Operation

The PRO 44 requires 9V 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.

The microphone should be placed on a at, unobstructed mounting surface, with the front of the microphone facing the sound source. The sound source should not be below, or higher than 60° above, the plane of the

60°

IDEAL WORKING ANGLE

mounting surface.

Avoid leaving the microphone in the open sun or in areas where temperatures exceed 110° F (43° C) for extended periods of time. Extremely high humidity should also be avoided.

Specications

Element

Polar pattern

Frequency response

Open circuit sensitivity

Impedance

Maximum input sound level

Dynamic range (typical)

Signal-to-noise ratio1

Phantom power requirements

Weight

Dimensions

Output connector

In the intere st of standards develo pment, A.T.U.S. offers full

details on it s test methods to othe r industry

1 Pascal = 10 dynes/cm

Typical, A-weighted , using Audio Precisio n System One.

Specications are subject to change without notice.

professionals on request.

= 10 microba rs = 94 dB SPL

Fixed-charge back plate, permanently polarized condenser Half-cardioid (cardioid in hemisphere above mounting surface) 70-16,000 Hz –25 dB (56.2 mV) re 1V at 1 Pa 100 ohms 114 dB SPL, 1 kHz at 1% T.H.D. 86 dB, 1 kHz at Max SPL 66 dB, 1 kHz at 1 Pa 9-52V, 2 mA typical 67 g (2.4 oz)

90.5 mm (3.56") maximum length,

73.0 mm (2.87") maximum width,

15.0 mm (0.59") maximum height TB3M-type

7.6 m (25') long, 2.6 mm (0.10")

Cable

diameter, 2-conductor, shielded cable with TA3F-type and XLRM-type connectors

225

PRO 44

frequency response: 70–16,000 Hz

10 dB

100

12" or more on axis Roll-off

330˚

200

Frequency in Hertz

0˚

180˚

500

30˚

150˚

60˚

120˚

10k

20k

90˚

LEGEND

200 Hz

Same as 1 kHz

1 kHz 5 kHz 8 kHz

LEGEND

polar pattern

300˚

270˚

240˚

210˚

SCALE IS 5 DECIBELS PER DIVISION

Response in dB

2.13"

54.0 mm

2.87"

73.0 mm

0.59"

15.0 mm

3.56"

90.5 mm