Instrukcja obsługi Audio-Technica PRO42

Audio-Technica mikrofon PRO42

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PRO

MINIATURE UNIDIRECTIONAL

CONDENSER BOUNDARY

MICROPHONE

Frequency in Hertz

Response in dB

10 dB

20k10k5k2k1k50020010050

LEGEND 12" or more on axis

Frequency Response

pad minimizes mechanical coupling of surface

vibrations to the microphone. The low-profile

housing has a low-reectance black nish.

Operation and Maintenance

The symmetry and area of the mounting sur-

face directly affect the sensitivity of the

boundary microphone at low frequencies.

Ideally, the mounting surface should be circu-

lar; however, square or rectangular surfaces

are most often used. If the mounting surface

is rectangular, the smaller dimension tends to

determine low-frequency cutoff. The micro-

phone should be centered on the surface and

positioned with the front of the microphone

facing the sound source along the longer

dimension of the mounting surface. The

sound source should not be below, or higher

than 60° above, the plane of the mounting

surface.

Output is low impedance balanced. The output

connector mates with XLRF-type 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 (9-52 volts) must be

applied equally to Pins 2 and 3, with the

ground for the power supply connected to

Pin 1. This can be provided by a console or

mixer with built-in phantom voltage or with the

addition of an in-line phantom power supply,

such as the recommended Audio-Technica

CP8506 and AT8801 power supplies.

The high sensitivity of the PRO 42 ensures

useful output and an excellent match to most

mixer, tape recorder and amplifier inputs. It

will provide undistorted output even in sound

Description

The PRO 42 is a wide-range miniature con-

denser microphone with a hemi-cardioid

(half-space cardioid) polar pattern. It was

designed for surface-mounted applications in

high-quality sound reinforcement and other

demanding sound pickup situations. Its small

size makes the PRO 42 ideal for use in appli-

cations where minimum visibility is required.

The PRO 42 features a 25' (7.6 m) perma-

nently-attached miniature cable with an

XLRM-type connector, which allows it to be

plugged directly into an XLRF-type jack or

cable connector. The unit’s integral electronics

can be powered from any external 9V to 52V

DC phantom power source.

Audio-Technica design engineers have utilized

the newest low-mass technology in the quest

for superior performance. The charge is now

on the fixed back plate, rather than the moving

element. With the A-T fixed-charge “back plate”

construction, a gold-vaporized diaphragm just

2 microns thick (about 0.000079") can be

used. This reduces moving mass substantially,

improving frequency response and transient

response while reducing distortion.

Positioning a properly designed miniature

unidirectional microphone centrally on a large,

flat, unobstructed surface yields several dis-

tinct advantages. Directionality is increased

by 3 dB, promoting enhanced gain before

feedback and further suppression of ambient

noise. Sensitivity is increased for improved

signal-to-noise ratio. Phase distortion due to

reflected sound energy from the boundary

itself is eliminated.

The microphone element is enclosed in a

rugged case and protected by heavy

perforated steel. The rubber non-slip bottom

elds as loud as 134 dB SPL. However, due

to the high sensitivity, in some instances it

may be possible to overload sensitive input

stages. If distortion occurs,

first

check for

input

overload. In such cases, an attenuator

such as the Audio-Technica AT8202 may be

required between the mic and the electronics

input. (Also, many mixers provide “input pad”

switches to reduce mic-input signal levels.)

While a modern condenser microphone is not

unduly sensitive to the environment, tempera-

ture extremes can be harmful. Exposure to

high temperatures 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.

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 modication.

For return approval and shipping information,

contact

the S ervice Depar tment, Audio-Tec hnica 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 mer-

chantability 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.

PRO

200 Hz

1 kHz

5 kHz

8 kHz

LEGEND

SCALE IS 5 DECIBELS PER DIVISION

120

150210

240

270

300

330

180

PRO 42 SPECIFICATIONS†

Element ..................................................... Fixed-charge back plate

permanently polarized condenser

Polar Pattern ............................................. Half-cardioid (cardioid in hemisphere above

mounting surface)

Frequency Response .............................. 70-14,000 Hz

Open Circuit Sensitivity .......................... –38 dB (12.5 mV) re 1V at 1 Pa*

Impedance ................................................ 100 ohms

Maximum Input Sound Level .................. 134 dB SPL, 1 kHz at 1% T.H.D.

Signal-to-noise Ratio1.............................. 65 dB, 1 kHz at 1 Pa*

Dynamic Range (Typical) ......................... 105 dB, 1 kHz at Max SPL

Phantom Power Requirements ............... 9-52V DC, 2 mA typical

Weight (less cable) .................................... 1.2 oz (35 grams)

Dimensions .............................................. 1.44" (36.6 mm) max width,

2.14" (54.3 mm) max length,

0.61" (15.5 mm) height

Output Connector .................................... 3-pin XLRM-type

Cable ......................................................... 25' (7.6 m) long (permanently attached

to microphone), 0.10" (2.6 mm) diameter,

2-conductor, shielded cable

† In the interest of standards development, A.T.U.S. oers full details

on its test methods to other industry professionals on request.

* 1 Pascal = 10 dynes/cm 2= 10 microbars = 94 dB SPL

1Typical, A-weighted, using Audio Precision System One

Optional Accessories:

CP8201 line matching transformer

(Lo-Z to 50,000 ohms).

AT8202 adjustable in-line attenuator for use

with balanced Lo-Z 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).

AT8801 single-channel 48V phantom power

supply (AC powered).

Polar Pattern

Dimensions

7.6 m

2.68"

68.0 mm

2.14"

54.3 mm

36.6 mm

1.44"

2.6 mm

0.10"

19.0 mm

0.75"

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

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

Specyfikacje produktu

Marka:	Audio-Technica
Kategoria:	mikrofon
Model:	PRO42
Źródło zasilania:	DC
Waga produktu:	35 g
Technologia łączności:	Przewodowa
Częstotliwość mikrofonu:	70 - 14000 Hz
Czułość mikrofonu:	38 dB
Impedancja mikrofonu:	100 Ω
Napięcie pracy:	9 V
Typ zasilacza:	DC
Zużycie energii:	2 mA
Typ przewodu:	XLRM