AKG PZM-30D Manual

AKG Mikrofon PZM-30D

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Side 1/2

PZM30 D

he PZM30 D is a Pressure Zone

Microphone

designed for professional

recording, sound reinforcement and

broadcasting. It has many applications, from

miking full orchestras or individual musical

instruments to security or teleconferencing.

The PZM30 D has a switchable dual frequency

response: rising (R) or flat (F). The “rising”

position adds brilliance. This makes it useful

wherever a crisp attack is desired, such as on

percussion, drums, or piano. The user can get a

bright sound without boosting high frequencies

on the recording console; the result is lower

noise. The “flat” position provides a smooth,

flat, high-frequency response for natural sound

reproduction.

These sturdy microphones are especially

reliable because they can be used with a rugged

detachable cable. The output is a male 3-pin

XLR-type, balanced and low impedance, which

permits long cable runs without hum pickup or

high-frequency loss.

Like other Pressure Zone Microphones, the

PZM30 D

utilizes the Pressure Recording

Process in which a miniature condenser

microphone capsule is positioned very close to

a sound-reflecting plate or boundary. The

capsule is mounted in the “Pressure Zone” just

above the boundary, a region where sound

coming directly from the sound source

combines in phase with sound reflected off the

boundary. The benefits are a wide, smooth

frequency response free of phase interference,

excellent clarity and “reach,” a hemispherical

polar pattern, and uncolored off-axis response.

Operating Instructions

The PZM30 D features self-contained

electronics which allows it to plug directly into

a standard 12-48 VDC phantom power supply.

AKG/Crown makes an AC-powered model

PH4B

supply for powering up to four PZMs.

Also available is a single-channel AC/battery

supply, AKG/Crown model PH1A. For special

applications, you can make your own battery

supply as

suggested in Fig. 3 on the reverse

side.

Using two-conductor shielded microphone

cable, plug the microphone into a phantom

power supply. Connect the power supply output

to a mixer mic input, or if your mixer has

phantom power built in, simply plug the PZM

directly into a mixer mic input.

PRESSURE

ONE

MICROPHONE

Specifications

Fig. 1

Type:

Pressure Zone Microphone.

Transducer:

Electret condenser.

Frequency response:

20 Hz to 20 kHz. See Fig. 1.

Polar pattern:

Hemispherical when used on a floor,

wall or ceiling.

Open circuit sensitivity:

7 mV/Pa* (–43 dB re 1 volt/

Pa).

Power sensitivity:

–43 dB re 1 mW/Pa.

EIA

sensitivity –135 dBm.

Impedance:

240 ohms, balanced. Recommended

minimum load impedance 1000 ohms.

Self-noise:

20 dB equivalent sound pressure level,

A-weighted.

S/N ratio:

74 dB at 94 dB SPL.

Maximum Sound Pressure Level:

150 dB SPL at the

microphone produces 3% THD.

Polarity:

Positive pressure on the diaphragm

produces positive voltage on pin 2 with respect to

pin 3 of the output connector.

Operating voltage:

Phantom power, 12 to 48 volts

DC, positive voltage on pins 2 and 3 with respect

to pin 1 of the output connector.

Current drain:

1.1 mA.

Connector:

Male 3-pin XLR-type.

Cable:

None supplied; use 2-conductor shielded

microphone cable.

Switch:

Frequency-response select switch for rising

or flat response.

Color:

Black.

Weight:

6.5 ounces (184 grams).

Dimensions:

6-in. x 5-in. x .75-in.

(15.2 cm x 12.7

cm x 1.9 cm). See Fig. 2.

Included accessories:

PZM windscreen, carrying

pouch.

Optional accessories:

PH4B phantom power supply

(4 channels, AC powered). PH1A phantom power

supply (1 channel, battery or AC-adapter

powered).

Low

Fig. 2

*1 pascal = 10 dynes/cm

= 10 microbars = 94 dB SPL.

Frequency Response

Frequency in Hz

Legend –––––––––– RISING

- - - - - - - - - FLAT

Low

-frequency response depends on size of surface.

Produkt Specifikationer

Mærke:	AKG
Kategori:	Mikrofon
Model:	PZM-30D

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