Audio-Technica MT838IIa Handleiding

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SUBMINIATURE OMNIDIRECTIONAL CONDENSER CLIP-ON MICROPHONE

- Maximum intelligibility and clean, accurate reproduction for lecturers,

stage and television talent, and worship leaders.

- Low-prole design is ideal for applications requiring minimum visibility.

- Includes a wire clothing clip and a metal-frame pop lter.

- MT838IIa is switchable for low-frequency roll-off reduces sensitivity to

popping in close vocal use.

- MT838IIa can be operated on battery or phantom power.

- MT838IIcW is terminated for use with all Audio-Technica UniPak™

wireless systems.

The MT838IIa / MT838IIcW is worn on the clothing of performers

for excellent yet unobtrusive sound pickup. Its small size makes the

microphone ideal for use in applications where minimum visibility

is required. Close-up voice pickup is crisp and clean, and the

omnidirectional polar pattern of the microphone assures nearly equal

sound pickup from every direction across a wide band frequencies.

The included clothing clip and metal-frame pop filter are removable.

When using the MT838IIa / MT838IIcW in extremely close situations, slip

the included metal-frame pop lter over the mic to reduce wind noise or

“poping”.

MT838IIa

Includes apower module AT8531 that requires 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.

An integral 80Hz 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 trafc, 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.

MT838IIcW

Less power module and includes clothing clip and metal-frame pop lter

only. 1.8 m cable terminated with locking 4-pin connector for Audio-

Technica UniPak™ body-pack wireless transmitters.

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-L0074-07-E

Machida • Tokyo • Japan

SPECIFICATIONS

ELEMENT Fixed-change back plate permanently

polarized condenser

POLAR PATTERNOmnidirectional

FREQUENCY RESPONSE20-18,000 Hz

OPEN CIRCUIT SENSITIVITY-62 dB (0.79 mV) re 1V at 1 Pa (capsule)

IMPEDANCE1800 ohms (capsule)

OPERATING VOLTAGE1.5 -10V DC (capsule)

LOW FREQUENCY ROLL-OFF80 Hz, 12 dB/octave (MT838IIa)

PHANTOM POWER REQUIREMENTS11-52V DC, 2 mA typical (MT838IIa)

BATTERY TYPE1.5V AA (MT838IIa)

BATTERY CURRENT / LIFE2.0 mA / 1200 hours (MT838IIa)

SWITCHES (MT838IIa)Flat, roll-off

WEIGHT (less cable and accessories)

MICROPHONE

POWER MODULE (AT8531)

7.7 g

81.2 g

DIMENSIONS

MICROPHONE

POWER MODULE (AT8531)

21.5 mm - long,

6.5 mm - diameter

83.0 mm - H x 63.0 mm - W x

22.0 mm - D

OUTPUT CONNECTOR

MT838IIa (AT8531)

MT838IIcW

Integral 3-pin XLRM-type

locking 4-pin connector for UniPak™

CABLE1.8 m long (permanently attached to

microphone), 2 mm diameter

ACCESSORIES FURNISHEDWire clothing clip;

metal-frame pop lter;

protective pouch.

AT8531 power module (MT838IIa)

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 (MT838IIa)

same as 1 kHz

Product specificaties