AKG MB-4 Manual

AKG Mikrofon MB-4

Læs gratis den danske manual til AKG MB-4 (2 sider) i kategorien Mikrofon. Denne vejledning er vurderet som hjælpsom af 13 personer og har en gennemsnitlig bedømmelse på 4.3 stjerner ud af 7 anmeldelser. Har du et spørgsmål om AKG MB-4, eller vil du spørge andre brugere om produktet?

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Side 1/2

MB4

MINI-BOUNDARY

™

MICROPHONE

he AKG/Crown

MB4 is a miniature

boundary microphone for multi-miking

applications such as teleconferencing,

distance learning, boardrooms,

courtrooms, and security applications.

Double-sided sticky tape is provided for

attaching the unit under shelves, on walls,

etc.

Thanks to its supercardioid pickup pattern,

the MB4 greatly reduces ambient noise

and pickup of room reverberation. The

result is a clearer sound.

The MB4 has a 15-foot attached cable

leading to an XLR-type output connector

with built-in mic electronics. It is powered

by 12-48V phantom power, and is low-

impedance balanced.

Features

•

Tiny, inconspicuous.

•

Can be used without putting holes in

the table.

•

Clean, clear, natural sound.

•

Low-Z balanced mic-level output prevents

hum and high-frequency loss.

Specifications

Type:

Phase Coherent Cardioid.

Element:

Electret condenser.

Frequency response (typical):

50 Hz to 15,000 Hz at

30 degrees incidence to surface (see Fig. 1).

Polar pattern:

Half-supercardioid (supercardioid in

the hemisphere above the primary boundary).

See

Figs. 2 and 3.

Impedance:

150 ohms, balanced (recommended

load impedance 1000 ohms or greater).

Open-circuit sensitivity (typical):

22 mV/Pa*

(–33

dB re 1 volt/Pa).

Power sensitivity:

–30.5 dB re 1 mW/Pa*.

EIA rating

–125 dBm.

Equivalent noise level (self-noise):

22 dB SPL

•

Removable grille assembly can be painted.

How to Paint the Microphone

1. Using a small screwdriver, pry open one side

of the base, then the other side

2. Remove the foam liner.

3. Wearing a dust mask, spray-paint the grille

assembly. Be sure grille holes are not clogged.

4. Allow to completely dry.

5. Make sure the LED is properly aligned.

6. Carefully place the grille assembly over the

base, and snap in place.

Installation

In a table, typical placement for each

mic is

an arm’s length from the user. Install

one

microphone in front of each person, or one

between every two people.

If the microphone will be used on a

lectern,

install it on an open surface. Do not

install in a

cavity or recessed area as the frequency

response and polar pattern will be degraded.

Orient the mic so the readable lable faces

the user (right-side-up).

Plug a mic cable with a female XLR-type

connector into the power module. Connect the

other end of the cable to a phantom power

supply. Or if your mixer has phantom power,

connect the mic cable directly to a mic input

and turn on phantom power.

typical (0 dB=0.0002 dyne/cm

), A-weighted.

S/N ratio:

72 dB at 94 dB SPL.

Maximum SPL:

120 dB SPL at 3% THD.

Polarity:

Positive (inward) pressure on the

diaphragm produces positive voltage on pin 2

with respect to pin 3.

Operating voltage:

Phantom power, 12-48 volts DC

on pins 2 and 3 with respect to pin 1 of output

connector.

Current drain:

4 mA nominal.

Connector:

3-pin pro audio, XLR-M type.

Cable:

Permanently attached, black, 15-foot

(4.572 m), 2-conductor shielded cable from mic

to power module or interface. No other cable

supplied. Use two-conductor shielded mic cable

from power module to mixer.

Materials:

High-impact molded plastic and steel

mesh mic grille, steel power module.

Finish:

Satin black.

Net weight:

2.7 ounces (78 grams).

Operating temperature range:

-10° to +50°C, or +14°

to +122°F.

Net weight:

Microphone: 0.7 ounces (19.8 grams)

Power module:

2.8 ounces (78.6 grams)

Dimensions:

See Fig. 4.

Included accessories: Double-sided tape for

fastening under shelves, etc., for theatrical

applications.

Optional accessories:

PH1A phantom power

supply (1 channel, battery or DC-adapter

powered). PH4A phantom power supply (4

channels, AC powered).

*1 pascal = 10 dynes/cm

= 10 microbars = 94 dB SPL.

Fig. 1. Frequency Response

Fig. 2. Horizontal-Plane Polar Response

Fig. 3. Vertical-Plane Polar Response

Produkt Specifikationer

Mærke:	AKG
Kategori:	Mikrofon
Model:	MB-4

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