Audio-Technica ATM75 Handleiding

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CARDIOID CONDENSER HEADWORN MICROPHONE

- Professional-quality vocal pickup with hands-free operation.

- Low-visibility headband provides stable, comfortable t.

- Pivot-mounted exible mic boom descends from left or right side.

- Belt-mounted power module operates on battery or phantom power.

- Cardioid polar pattern improving isolation of desired sound source.

- Also available as: ATM75cW - less power module; 1.4m cable terminated

with locking 4-pin connector for A-T UniPak

™ wireless systems.

The ATM75 required 11V to 52V DC phantom power or a 1.5V AA

battery for operation. A battery need not be in place for phantom power

operation.

Battery installation: Remove the cap from the top of the power module.

Insert a fresh 1.5V AA battery (“+” end toward the cap release button),

then reassemble the power module. Alkaline batteries are recommended

for longest lift. Remove the battery during long-term storage.

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.

An integral 80Hz high-pass UniSteep®filter provides easy switching

from a at frequency response to a low-end roll-off. The roll-off position

reduces the microphone’s sensitivity to popping in close vocal use. It also

reduces the pickup of low-frequency ambient noise (such as trafc, air-

handling systems, etc.), room reverberation and mechanically coupled

vibrations.

For maximum stability and minimum visibility, the adjustable headband

should be worn around the back of the head, with each cushioned

support pad resting on the temple in front of the ear. The cable should

remain clipped to the headband, with slack at the boom connection.

Avoid leaving the microphone in the open sun or in areas where

temperatures exceed 40°C for extended periods. Extremely high humidity

should also be avoided.

FORM No. ATGC-L0034-06-E

Machida • Tokyo • Japan

SPECIFICATIONS

ELEMENTFixed-change back plate permanently

polarized condenser

POLAR PATTERNCardioid

FREQUENCY RESPONSE100-13,000 Hz

LOW FREQUENCY ROLL-OFF80 Hz, 18 dB/octave

OPEN CIRCUIT SENSITIVITY

(Phantom / Battery)

-51 dB (2.8 mV) /

-53 dB (2.2 mV) re 1V at 1 Pa

IMPEDANCE (Phantom / Battery)200 ohms / 270 ohms

MAXIMUM INPUT SOUND LEVEL

(Phantom / Battery)

132 dB / 121 dB SPL,

1 kHz at 1% T.H.D.

DYNAMIC RANGE (typical)

(Phantom / Battery)

96 dB / 85 dB,

1 kHz at Max SPL

SIGNAL-TO-NOISE RATIO58 dB, 1 kHz at 1 Pa

PHANTOM POWER REQUIREMENTS11-52V DC, 2 mA typical

BATTERY TYPE1.5V AA/UM3

BATTERY CURRENT/LIFE0.4 mA / 1200 hours typical (alkaline)

SWITCHESOff, on-at, on-roll-off

WEIGHT MICROPHONE

POWER MODULE

60 g

139 g

DIMENSIONS HEADSET

MICROPHONE

POWER MODULE

120.0 mm - nominal at widest point,

80.5 mm - exible boom,

20.4 mm - diameter,

84.0(H) x 63.0(W) x 22.9(D) mm

OUTPUT CONNECTORIntegral 3-pin XLRM-type

CABLE 1.4 m long (permanently attached to

microphone), 2.8 mm diameter,

2-conductor shielded cable with TA3F-

type connector

ACCESSORIES FURNISHEDAT8531 power module; AT8439 cloth-

ing clip; AT8139L large windscreen;

AT8139S small windscreen; battery

10 dB

20k10k5k2k1k50020010050

8 kHz

200 Hz

1 kHz

5 kHz

0°

330°

300°

270°

240°

210°

180°

150°

120°

90°

60°

30°

Polar Pattern

Frequency Response

SCALE IS 5 DECIBELS PER DIVISION

LEGEND

Frequency in Hertz

LEGEND 12” or more on axis

Response in dB

Roll-off

Product specificaties