AKG PERCEPTION 400 Bedienungsanleitung

User Instructions

Please read the manual before using the equipment!

PERCEPTION

400

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Precaution/Unpacking

1.1 Precaution

Please make sure that the

piece of equipment your microphone

will be connected to fulfills the safety

regulations in force in your country

and is fitted with a ground lead.

1.2 Unpacking

Check that the packaging contains all of

the items listed below:

• Microphone

• Spider suspension

• Carrying case

• Mini poster

Should any item be missing, please con-

tact your AKG dealer.

2 Description

2.1 Introduction

Thank you for purchasing an

AKG product. This Manual contains

important instructions for setting up and

operating your equipment. Please take a

few minutes to read the instructions

below carefully before operating the

equipment and keep the Manual for

future reference. Have fun and impress

your audience!

The

PERCEPTION

400 is a heavy-duty,

rugged true condenser microphone built

to the same strict quality standards as all

other AKG products.

Designed on the basis of AKG’s decades

of know-how and feedback from sound

engineers around the world using AKG

studio microphones every day, this gen-

eral-purpose 1-inch large-diaphragm

microphone brings AKG studio quality to

the worlds of recording, live sound, and

broadcasting.

2.2 Features

•Cardioid polar pattern: The micro-

phone is most sensitive to sounds

arriving from in front of it while pick-

ing up much less of sounds arriving

from the sides or rear (from monitor

speakers or neighboring instru-

ments). This makes the microphone

equally suited for recording and

onstage use.

•Gold-sputtered diaphragm: The

diaphragm is made of a plastic foil

that is gold-sputtered on one side

only to prevent shorting to the back

electrode even at extremely high

sound pressure levels.

•All-metal body: The all-metal body

adds to the rejection of RF interfer-

ence so you can use the microphone

near transmitter stations and along

with wireless microphones or other

PERCEPTION

400

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communications equipment. The

extremely rugged, heavy body and

sturdy front grill protect the micro-

phone from damage from tough han-

dling on stage.

•High headroom, minimum distor-

tion: Capable of handling sound

pressure levels up to 135 dB without

introducing perceptible distortion and

built to resist high temperatures and

humidity, the microphone will give

excellent results in a wide range of

applications.

• Polar pattern selector: Selector 1 on

the microphone front (refer to fig. 1)

sets the microphone polar pattern to

figure eight, cardioid, or omnidirec-

tional.

•Switchable preattenuation pad:

Selector 2 on the microphone rear

(refer to fig. 2) lets you increase the

headroom by 10 dB for distortion-

free close-in recording. The preatten-

PERCEPTION

400

Fig. 1: Polar pattern selector (1) on

PERCEPTION

400 front.

Fig. 2: Preattenuation (2) and bass cut

(3) switches on

PERCEPTION

400 rear.

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3 2

uation pad prevents the micro-

phone's output level, particularly at

low frequencies, from overloading the

miniature transformers used in many

mixer input stages, etc.

•Bass cut filter: Selector 3 on the

microphone rear (refer to fig. 2 on

page 3) further reduces low-end dis-

tortion caused by footfall or wind

noise, etc. The filter also minimizes

the proximity effect that close-in mik-

ing from less than 4 inches causes in

any unidirectional microphone.The

filter rolls off at 12 dB/octave from

300 Hz downward.

2.4 Optional Accessories

•B 18 + A 48V battery supply and

DC/DC converter for 48-V phantom

powering

•PF 80 studio pop screen

•ST 305 floor stand

•W 4000 external windcscreen

3 Interfacing

3.1 General

The microphone uses a true

condenser transducer designed for 48-

volt phantom powering to DIN 45 596/

IEC 268-15. Neither the diaphragm nor

the backplate are permanently polarized,

so the microphone needs an external

power supply.

The microphone provides a balanced

output on a 3-pin male XLR connector:

Pin 1: ground

Pin 2: hot

Pin 3: return

PERCEPTION

400

2.2

2.3

Mic

Phantom

Fig. 3: Connecting to a balanced input with (2.2) or without (2.3) phantom power.

6399_Perception400_ek 30.01.2006 12:58 Uhr Seite 4

You can connect the microphone either

to a balanced microphone input with or

without phantom power or an unbal-

anced microphone input.

3.2 Input with Phantom Power

Refer to fig. 2 on page 4.

1. Use an XLR cable to connect the

microphone (1) to a balanced XLR in-

put with phantom power.

2. Switch the phantom power on. (Refer

to the user manual of the unit to which

you connected your microphone.)

3.3 Input with No Phantom Power

Refer to fig. 2 on page 4.

• If your mixer provides no phantom

power, connect an optional AKG

B 18 + A 48V phantom power sup-

ply (2) between the microphone and

the mixer.

Important: Using any power supply

other than those recommended by

AKG may damage your micro-

phone and will void the warranty.

3.4 Unbalanced Input

Refer to fig. 4.

Use a cable with a female XLR connec-

tor and TS jack plug:

1. On the XLR connector, use a wire

bridge to connect pin 1 to pin 3 and

the cable shield.

2. Connect the inside wire of the cable

to pin 2 on the XLR connector and

the tip contact of the jack plug.

PERCEPTION

400

Fig. 4: Connecting to an unbalanced input.

Mic Phantom

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Note: Unbalanced cables may pick up

interference from stray magnetic

fields near power or lighting cables,

electric motors, etc. like an antenna.

This may introduce hum or similar

noise when you use a cable that is

longer than 16 feet (5 m).

4 Using Your

Microphone

4.1 General Hints

The

PERCEPTION

400 is a general-pur-

pose multipattern microphone for re-

cording, broadcast, and onstage use.

Every instrument radiates its sound in a

specific way. Therefore, to get the best

sound it is crucial to experiment with

microphone placement.

• Whichever polar pattern you select-

ed, it may be good to know which

way the transducer axis is facing: the

front of the microphone is the side of

the body with the AKG logo and

polar pattern selector (1) on it.

• When recording wind instruments or

vocals, make sure not to blow or

sing directly into the microphone.

To avoid unwanted wind and pop

noise or moisture problems, place an

PERCEPTION

400

Fig. 5: Microphone front.

6399_Perception400_ek 30.01.2006 12:58 Uhr Seite 6

optional PF 80 pop screen from AKG

between the microphone and vocal-

ist/instrument.

•Keep the microphone dry. Moisture

from blowing or singing directly at the

capsule from a short distance, or

extremely high humidity may cause

the microphone to start crackling or

go very quiet due to partial short cir-

cuits in the polarization voltage.

• If you use the microphone in the

open, use an optional AKG W 4000

windscreen to protect the micro-

phone from moisture and reduce

wind noise.

•High volume instruments: You can

use this microphone for close-in

recording of very loud instruments

(brass instruments, kick drum, etc.).

Just switch the preattenuation pad in

to increase the microphone’s capabili-

ty of handling sound pressure levels to

145 dB.

•Low-frequency noise: To suppress

low-frequency noise such as air con-

ditioning rumble, footfall noise, or

traffic sounds, switch the bass cut fil-

ter in.

4.2

Selecting Polar Patterns

Each of the PERCEPTION 400’s selec-

table polar patterns is virtually frequency

independent so that reflected sound, too

will be reproduced accurately and uncol-

ored.

•Cardioid (center setting): This is a

standard setting for recording and

gives excellent results on all kinds of

voices and a wide range of instru-

ments. Remember to aim the micro-

phone front (see fig. 5 on page 6) at

the sound source.

•Figure eight (left-hand setting): The

microphone will pick up sounds arriv-

ing from the front and rear with equal

sensitivity. Use this mode to mic up

the side signal in M/S stereo record-

ing or to record two sound sources

(talkers, instruments) facing each

other. It is also a good choice for

cymbal overhead miking.

• Omnidirectional (right-hand setting):

This is the preferred setting for "all

around the mic" recording, high qual-

ity ambience (audience sound) mik-

ing, or far-field recording in excep-

tionally good-sounding large or small

recording rooms, etc.

5 Cleaning

To clean the surface of the

microphone body, use a soft

cloth moistened with water.

PERCEPTION

400

6399_Perception400_ek 30.01.2006 12:58 Uhr Seite 7

PERCEPTION

400

No sound.

Distortion.

1. Power to mixer and/or amplifier is off.

2. Channel or master fader on mixer, or

volume control on amplifier is at zero.

3. Microphone is not connected to mixer

or amplifier.

4. Cable connectors are seated loosely.

5. Cable is defective.

6. No supply voltage.

1. Channel gain control on mixer set too

high.

1. Switch power to mixer or amplifier on.

2. Set channel or master fader on mixer

or volume control on amplifier to de-

sired level.

3. Connect microphone to mixer or am-

plifier.

4. Check cable connectors for secure

seat.

Check cable and replace if damaged.

6. Switch phantom power on.

Phantom power supply: insert

batteries.

Check cable and replace if necessary.

1. Turn gain control down CCW.

Problem Possible Cause Remedy

6 Troubleshooting

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PERCEPTION

400

(Distortion)

Crackling noises or low output.

2. Microphone too close to sound

source.

3. Microphone sensitivity set too high.

• Partial short circuits due to excessive

humidity.

2. Move microphone further away from

sound source.

3. Switch preattenuation pad in.

• Place microphone in warm, dry room

and allow to dry.

Problem Possible Cause Remedy

6 Troubleshooting

6399_Perception400_ek 30.01.2006 12:58 Uhr Seite 9

Type: 1-inch dual-diaphragm, true con-

denser pressure-gradient micro-

phone

Polar patterns: cardioid, omnidirectional,

figure eight

Open-circuit sensitivity

at 1kHz (cardioid): 28 mV/Pa (-31 dBV ±2 dB)

Frequency range: 20 Hz to 20 kHz

(see frequency response graphs)

Impedance: ≤200 ohms

Recommended load impedance:

≥1000 ohms

Equivalent noise level

to CCIR 468-2: 26 dB

Equivalent noise level

to IEC 60268-4 (A-weighted): 16 dB-A

Signal/noise ratio

re 1 Pa (A-weighted): 78 dB

Max. SPL for 0.5% THD: 135 / 145 dB SPL (0 / -10 dB)

Preattenuation pad: -10 dB (switchable)

Bass cut filter slope: 12 dB/octave, 300 Hz

Environment: temperature: -10°C to +60°C

R.H.: 80% (+25°C)

Powering: 48 V ±4 V phantom power

to DIN 45 596 / 268-15IEC

Current consumption: ≤2 mA

Connector: 3-pin XLR (pin 2 hot)

Dimensions: 53 dia. x 160 mm high / 2 x 6.3 in.

Net weight: 525 g / 1.2 lbs.

PERCEPTION

400

FFCCCCSSttaatteemmeenntt

The device complies with part 15 of the FCC rules. Operation is

subject to the following two conditions:

(1) this device may not cause harmful interference, and

(2) this device must accept any interference received, includ-

ing interference that may cause undesired operation.

7 Specifications

6399_Perception400_ek 30.01.2006 12:58 Uhr Seite 10

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