Audio-Technica at4050 specifications AT4050 MULTI-PATTERN Condenser Microphone

AT4050 MULTI-PATTERN CONDENSER MICROPHONE

•Transparent uppers/mids balanced by rich low-end qualities combine with advanced acoustic engineering for extensive performance capabilities and highest quality

•Dual-diaphragm capsule design maintains precise polar pattern definition across the full frequency range of the microphone

•Transformerless circuitry virtually eliminates low-frequency distortion and provides superior correlation of high-speed transients

•Open acoustical environment of the symmetrical housing assembly minimizes unwanted internal reflections

•State-of-the-art surface-mount electronics ensure compliance with A-T’s stringent consistency and reliability standards

The AT4050 is intended for use in professional applications where remote power is available. It requires 48V 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 and CP8506 four-channel phantom power supplies.

Output from the microphone’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 filter provides easy switching from a flat frequency response to a low-end roll-off. The high-pass position reduces the microphone’s sensitivity to popping in close vocal use.

AT4050 SPECIFICATIONS†

ELEMENT	Externally polarized (DC bias)
	condenser
POLAR PATTERN	Cardioid, Omnidirectional,
	Figure-of-eight
FREQUENCY RESPONSE	20-18,000 Hz
LOW FREQUENCY ROLL-OFF	80 Hz, 12 dB/octave
OPEN CIRCUIT SENSITIVITY	–36 dB (15.8 mV) re 1V at 1 Pa*
IMPEDANCE	100 ohms
MAXIMUM INPUT SOUND LEVEL	149 dB SPL, 1 kHz at 1% T.H.D.;
	159 dB SPL, with 10 dB
	pad (nominal)
NOISE1	17 dB SPL
DYNAMIC RANGE (typical)	132 dB, 1 kHz at Max SPL
SIGNAL-TO-NOISE RATIO1	77 dB, 1 kHz at 1 Pa*
PHANTOM POWER	48V DC, 4.2 mA typical
REQUIREMENTS
SWITCHES	Pattern selection; flat, roll-off;
	10 dB pad (nominal)
WEIGHT (less accessories)	18.0 oz (510 g)
DIMENSIONS	7.40" (188.0 mm) long, 2.10"
	(53.4 mm) maximum body
	diameter
OUTPUT CONNECTOR	Integral 3-pin XLRM-type
ACCESSORIES FURNISHED	AT8449 shock mount for 5/8"-27
	threaded stands; microphone
	dust cover; protective carrying
	case

†In the interest of standards development, A.T.U.S. offers 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. Specifications are subject to change without notice.

Polar Pattern (Cardioid)

0	Frequency Response (Cardioid)
330	30

300	60
										in dB
270	90								10 dB	Response
240	120
210	150	100	200	500	1k	2k	5k	10k	20k
	50
	180

Polar Pattern (Omni)

	0	Frequency Response (Omni)
330		30

300	60
										in dB
270	90								10 dB	Response
240	120
210	150	100	200	500	1k	2k	5k	10k	20k
	50
	180

It also reduces the pickup of low-frequency ambient noise (such as traffic, air-handling systems, etc.), room reverberation and mechanically coupled vibrations.

In use, secure the cable to the mic stand or boom, leaving a slack loop at the mic. This will ensure the most effective shock isolation and reduce the possibility of accidentally pulling the microphone out of its mount.

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

SCALE IS 5 DECIBELS PER DIVISION

LEGEND

200 Hz same as 1 kHz

1 kHz

5 kHz

8 kHz

Polar Pattern (Fig. Eight)

	0
330	30
300	60
270	90
240	120

	210	150
		180
	SCALE IS 5 DECIBELS PER DIVISION
LEGEND
200 Hz	same as 1 kHz
1 kHz
5 kHz	same as 1 kHz
8 kHz	same as 1 kHz

Frequency Response (Fig. Eight)

	in dB
10 dB	Response

50	100	200	500	1k	2k	5k	10k	20k
			Frequency in Hertz
LEGEND		12" or more on axis
		Roll-off

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

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

www.audio-technica.com

P51460-EN ©2002 Audio-Technica U.S., Inc. Printed in U.S.A.