Shure 512 specifications General, Specifications, Microphone, Headphone

GENERAL

Shure Model 512 combines an efficient “open-air” headphone with a close-talking dynamic microphone. The unit is unobtrusive, durable, comfortable, and provides a wide frequency range.

The 512 was designed for sports and news announcing, intercom- munications systems, and special events remote broadcasting. It offers convenient hands-free operation, and a lightweight frame to reduce user fatigue. The unidirectional pickup pattern reduces unwanted background noise, permitting its use in noisy environ- ments. The microphone characteristics are tightly controlled resulting in consistent response and output, and the headphone response is tailored to enhance voice intelligibility.

The headband easily adjusts to fit a variety of head sizes and hair- styles, and the microphone boom can be adjusted to accurately place the microphone cartridge at the corner of the user’s mouth. The microphone is supplied with a foam windscreen to reduce explosive “popping” sounds, and a cable clip to secure the cable to clothing.

SPECIFICATIONS

MICROPHONE

Type

Dynamic, close-talking

Frequency Response (at 8 mm 5/16 in.)

50 to 15,000 Hz

	+20
	+10
dB	0
	–10
	-20
			2	3	4 5 6 789	2	3	4 5 6 789
	20	50	100		1000			10000	20000

Hz

27C8114 (Rev. 7)

©2010, Shure Incorporated

Model 512 User Guide

Polar Pattern

Cardioid (unidirectional) response - uniform with frequency, symmetrical about axis.

	180°
150°	150°
120°	120°
90°	90°
	–20 dB
	–15 dB
60°	60°
	–10 dB

–5 dB

30°30°

0

500 Hz

1000 Hz

4000 Hz

Impedance

Microphone rating impedance is 150 Ohms (200 Ohms actual) for connection to microphone inputs rated at 19 to 300 Ohms.

Output Level (closed-talked at 1,000 Hz)

Open-circuit voltage -47.0 dB (4.5 mV) 0 dB=1 volt per 100 microbars

Power Level -66.0 dB

0 dB=1 milliwatt per 10 microbars

Hum Sensitivity (typical)

38.4 dB equivalent SPL in 1 millioersted field

Polarity

Positive pressure on diaphragm produces positive voltage on red lead and pin 2 of connector.

HEADPHONE

Type

Dynamic, open-air, left side only

Frequency Response

100 to 10,000 Hz, tailored for voice intelligibility.

	+20
	+10
dB	0
	–10
	-20
			2	3	4 5 6 789	2	3	4 5 6 789
	20	50	100		1000			10000	20000

Hz

Impedance

300 Ohms at 1,000 Hz

Printed in U.S.A.