Audio-Technica AT831R Bruksanvisning
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MINATURE CARDIOID CONDENSER MICROPHONE
FORM No. ATGC-L0131-07-E
Machida • Tokyo • Japan
SPECIFICATIONS
ELEMENT Fixed-change back plate permanently
polarized condenser
POLAR PATTERNCardioid
FREQUENCY RESPONSE40-16,000 Hz
OPEN CIRCUIT SENSITIVITY-42 dB (7.9 mV) re 1V at 1 Pa
IMPEDANCE 250 ohms
MAXIMUM INPUT SOUND LEVEL141 dB SPL, 1 kHz at 1% T.H.D.
LOW FREQUENCY ROLL-OFF80 Hz, 18 dB/octave
DYNAMIC RANGE (typical)112 dB, 1 kHz at Max SPL
SIGNAL-TO-NOISE RATIO65 dB, 1 kHz at 1 Pa
PHANTOM POWER REQUIREMENTS11-52V DC, 2 mA typical
SWITCH Flat, roll-off
WEIGHT (less cable and accessories)
MICROPHONE
POWER MODULE
2.8 g
81 g
DIMENSIONS
MICROPHONE
POWER MODULE
25.0 mm - long, 10.2 mm - diameter
92.9 mm - long, 18.9 mm - diameter
OUTPUT CONNECTORIntegral 3-pin XLRM-type
CABLE 4.0 m long (permanently attached to
microphone), 3.2 mm diameter,
2-conductor, shielded cable with TA3F
output connector
ACCESSORIES FURNISHEDAT8538 power module;
AT8417 clothing clip;
AT8444 instrument adapter;
AT8116 windscreens;
protective carrying case
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 (MT830a)
- Clip-on lavalier mic provides crisp, full-sounding voice pickup
- Also excels as an instrument mic, especially for pickup of
acoustic guitar with included AT8444 instrument adapter
- Excellent gain before feedback and suppression of background
noise
- UniSteep® lter provides a steep low-frequency attenuation to
improve sound pickup without affecting voice quality
- Operates on phantom power only
For use as a lavalier, attach the microphone about six inches
below the chin. Anticipate movements that may cause the
microphone to rub against or be covered by clothing, and
position the microphone to avoid it.
The AT831R is intended for use in professional applications
where remote power is available. It requires 11 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 single-channel or CP8506 four-channel phantom power
supplies.
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.
An integral 80 Hz high-pass UniSteep®filter provides easy
switching from a flat 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 trafc, air-handling systems,
etc.), room reverberation and mechanically coupled vibrations.
The microphone is RoHS compliant–free from all substances
specied in the EU directive on hazardous substances.
Avoid leaving the microphone in the open sun or in areas where
temperatures exceed 43°C for extended periods. Extremely
high humidity should also be avoided.
Produktspecifikationer
| Varumärke: | Audio-Technica |
| Kategori: | mikrofon |
| Modell: | AT831R |
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