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DPA mikrofon d:screet 4071

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Sida 1/9

Introduction

To ensure optimal performance of your

DPA Miniature Microphone, please follow

the simple care and maintenance instruc-

tions below.

Miniature Microphones from DPA are

designed to be very resistant to humidity,

moisture and sweat. Highly resistant mate-

rials like gold plated stainless steel, and fea-

tures like the double-vent-protection-sys-

tem are used in construction of the micro-

phones, to avoid damage by hostile fluids. In

any case, it is still a good idea to keep the

Miniature Microphones away from any kind

of unnecessary exposure to water and

cleaning fluids and to keep the microphone

element dry at all times.

1. Cleaning guide

The cable and protection grid are the only

parts that may be cleaned if necessary.

The protection grid is permanently fixed

and protects the microphone element

inside. Do not attempt to remove the pro-

tection grid under any circumstances.

Do not use any kind of cleaning fluid other

than distilled water. Use of ultra-sonic baths

must be avoided. Avoid all kinds of spray or

fluids, which contain chemical components

to remove static electricity on or close to

the microphone as this could cause dam-

age to the electret layer.

When mounting the Miniature Microphone

directly on the skin of a performer, care

should be taken to avoid sweat from run-

ning directly into the microphone. If the

microphone gets filled up with water or

sweat it will not be damaged, but possibly

turn deaf while the water is captured inside

the microphone, behind the protection grid.

Remove the water by shaking the micro-

phone or drying it with a piece of lint free

cloth.

Note: If the microphone has been

exposed to water or sweat it must be

left to dry out to recover its original

specifications. Drying out the

Miniature Microphone between expo-

sures to humidity will also help to

extend its lifetime. Leaving the micro-

phone with the power on will speed up

the drying process, as the built-in pre-

amplifier will gently heat up the micro-

phone (idle power ~2 mW).

Tip: In order to save battery power on the

belt pack transmitters while drying out the

microphone, it is a good idea to use a P48

Phantom Power Adapter (DAD6001).

1.1 Cleaning the microphone grid

During use in environments where the

microphone is exposed to make-up or dusty

materials, the grid may get clogged up. If

needed, clean the grid using a sof t cloth

and distilled water only.

MANUAL 4071 -2 13/05/03 9:21 Side 1

2.3 Correct treatment of the micro-

phone cable

The cable is usually longer than required for

its actual purpose. Ensure that superfluous

cable is wound up in soft loops (preferably

6-8 cm in diameter). Avoid ’kinks’ in the

cable. Exposing the cable to stretching

beyond its specifications or stressing it by

winding it tightly over sharp edges will

reduce the microphone’s operational life

Tip: Handling noise from the cable can be

decreased by up to 30dB by making a loose

loop in the cable, as close to the micro-

phone element as possible. The DMM0008

Miniature Clip, double lock, is designed for

this mounting technique.

Tip: The place where the cable enters the

MicroDot connector will sometimes be

exposed to excessive stress and after long

term heavy-duty use, the cable might show

signs of wear at this point. As a preventive

maintenance procedure, it may be advis-

able to replace the connector in this

instance. Contact the nearest DPA

Microphones representative for mainte-

nance advice or assistance.

2.4 Correct use of adapters and

MicroDot connectors

To provide users with safe and compact

mounting of connectors, all Miniature

Microphones from DPA are fitted with the

MicroDot connector as standard. A broad

Correct way to wind up the cable

of the Miniature Microphone.

Please note t he slack after the connector.

A connector tightening tool is

supplied with each adapter

1.2 Cleaning the microphone cable

Residue from tape, glue or make-up on the

cable must be removed after use. Leaving

these substances on the cable over longer

periods of time may etch into the cable

jacket and will make the cable more suscep-

tible to breaks. The cable can easily be

cleaned using organic oil (e.g. olive oil) or

lukewarm, distilled water.

Do not bend the cable or rub it harshly

since this may stress the inner cores of the

cable and cause them to break over time.

2. Correct use of the Miniature

Microphone

It is important to observe the following

guidelines concerning the daily use of the

microphone.

2.1 Description of presence boost and

frequency response

The type 4071 has a fixed microphone grid

with a typical 5dB soft boost at 4-6kHz.

This so-called “presence area” is the range

where the human ear is most sensitive and

is also the range of speech intelligibility, clar-

ity and definition. When a microphone is

placed on the chest for example, clarity

seems to be lost. Most engineers will com-

pensate for this by having a presence

boost on an equalizer in the following audio

path, to make the voice “cut through”.

The Type 4071 with presence boost will

make use easier and quicker and will intro-

duce less noise and distortion than any EQ

will because the boost is done acoustically, at

the microphone diaphragm. An acoustic lo-

cut has been incorporated in the capsule so

the built-in preamp and the perhaps follow-

ing wireless system will have much larger

headroom. When recording voices, from

microphone placement on the performer’s

body, no frequency below 100 Hz is relevant.

For this reason, the airing vent in the capsule

has been specially designed to make the fre-

quency response 2dB attenuated at 100Hz,

with a 3dB per octave roll off. Outdoor

recordings can introduce unwanted wind

rumble. The lo-cut feature will reduce the low

frequency part of the wind rumble.

2.2 Correct treatment of the micro-

phone element

The diaphragm in the microphone element

is the most sensitive part of the unit and as

emphasized earlier, it must be left

untouched to preserve its original charac-

teristics. Do not spray any substances such

as hair spray directly into the microphone

and avoid getting make-up or paint on the

microphone element and housing.

Tip: In lapel or tie placement it is recommend-

ed that the microphone grid point away from

the mouth to decrease breathing noises

caused by the mouth or nose of the per-

former. The microphone element is com-

pletely omnidirectional at all frequencies, so

this method will not colour the sound.

MANUAL 4071 -2 13/05/03 9:21 Side 2

EMK 407 1 ENG/E FP MI CROPH ON E KI T

Also available as DAK4071-E excluding microphone and adaptor.

DAD6024 XLR adaptor wit h mid range

attenuation

3. EMK4071 ENG/EFP Microphone Kit

This kit is made for ENG/EFP use, when the

microphone is allowed to be visible. The kit

is delivered in a sturdy, hard case with a

transparent lid. It contains a 4071-BM

Miniature Microphone and the following

accessories:

Adaptor: MicroDot to 3-pin. XLR (P48)w.

Mid Range Attenuation (DAD6024)

Designed for microphone placement on the

human body. When placing a microphone on

a performer’s chest, an acoustic lower

midrange boost will occur resulting in a

"muddy" and indistinct sound, compared to a

free frontal placement. This adapter pro-

vides a 3dB attenuation at 800Hz for added

clarity when using a Miniature Microphone.

range of connection adapters is offered as

optional accessories for most VHF and UHF

systems for professional use. The adapters

are ultra-compact and will in most cases

take up no more space than the original

connectors. With each adapter comes a

connector-tightening tool, which should be

employed whenever the MicroDot connec-

tor needs to be tightened safely onto t he

adapter for long periods of time.

Never attempt to loosen or tighten the con-

nector by the cable or its strain relief.

Despite the use of Kevlar, the cable might

be damaged if twisted with excessive

force. Tighten the MicroDot using finger

torque or the recommended tightening tool

only. Do not use glue.

Do not mount any other connector onto

the cable than the standard MicroDot con-

nector from DPA Microphones. The DPA

MicroDot connector is specially designed

for use with the Kevlar reinforced cable,

ensuring the maximum possible tensile

strength in the design. In case of failure,

MicroDot spare parts, assembly tool and

assembly guide can be acquired.

Various wireless systems require the use of

electronic components inside the adapter to

optimize the signal level, the DC-offset filter-

ing and powering of the built-in microphone

preamplifier. Using the adapters from DPA

ensures the correct electronic circuit with

the listed types of wireless systems at all

times. Do not attempt to employ non-stan-

dard adapters or connectors as you might

damage the microphone preamplifier.

MANUAL 4071 -2 13/05/03 9:21 Side 4

Produktspecifikationer

Varumärke:	DPA
Kategori:	mikrofon
Modell:	d:screet 4071

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