DPA 4088 User Manual

USER’S MANUAL

Type 4088

Cardioid Headband 4088

USER’S MANUAL

CONTENTS

Introduction 4
Placement 4
Cleaning Guide 5
Correct use of the Cardioid Headband 4088 6
Specifications 12
Accessories Available 14
Service & Repair 16
War ranty 16
CE Standard 16

Type 4088

Cardioid Headband 4088

4

5

CLEANING GUIDE

When mounting the 4088 on a performer,
care should be taken to avoid sweat from
running directly into the microphone. If the
microphone gets filled up with water or sweat
it will possibly turn deaf while the water is
captured inside the microphone, behind the
fixed protection grid.

Care of the microphone element

The microphone diaphragm is protected
inside the microphone housing and there is
no access to the diaphragm. It is well pro­tected from dust build-up and no attempt
should be made to remove the protection
grids to clean the diaphragm. The protec­tion grids are not removable, therefore no
attempt should be made to clean the grid
surface and extreme care should be taken
not to clog the grids with make-up or other
such substances.

If water or sweat has entered the micro­phone element, remove it by shaking the
microphone gently. When it is left to dry out
it will recover to its original specifications.
Drying out the 4088 between exposures to
humidity will also help to extend its lifetime.
Do not use any kind of cleaning fluid. 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 damage to the electret layer.

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 suscep­tible 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.

INTRODUCTION

To ensure optimal per formance of your
4088, please follow the simple instructions
of care, maintenance, and mounting below.
The Cardioid Headband 4088 from DPA is
designed to be very resistant to humidity,
moisture and sweat. Highly resistant mate­rials are used in construction of the micro­phones, to avoid damage by hostile fluids.
In any case, it is still a good idea to keep the
4088 microphone away from any kind of
cleaning, unnecessary exposure to water
and cleaning fluids, and to keep the micro­phone element dry at all times.

PLACEMENT

In general, to ensure the optimal sound of
the 4088, it must be mounted at about
2-3 cm (1 inch) from the corner of the
mouth. Correct placement ensures that
you avoid air noises from the nose and
mouth from being captured by the micro-

phone. Avoid any contact with beards or
moustaches. Please note that the 4088 is
not designed for placement directly in front
of the mouth. The sound timbre and pressure
is as good at the corner of the mouth as it
is directly in front of it. See the pictures below.

Keep dry

Correct placement of microphone
at corner of mouth.

Correct placement of microphone at
corner of mouth

Sweat stopper to hinder sweat reaching
the capsule by running down the boom.

Sweat stopper

76

CORRECT USE OF THE CARDIOID
HEADBAND 4088

It is important to observe the following
guidelines concerning the daily use of the
microphone.

Correct treatment of the microphone
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 characteristics. 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.

Correct treatment of the microphone
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: 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 advisable to replace the con-

nector in this instance. Contact the
nearest DPA Microphones representa­tive for maintenance advice or assistance.

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
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.

A connector tightening tool is supplied with
each adapter and should be employed
whenever the MicroDot connector needs
to be tightened safely onto the adapter for
long periods of time. Tighten the MicroDot
until the cable can no longer be turned at
the cable relief. Never attempt to loosen or
tighten the connector 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

Correct way to wind up the cable of
the Miniature Microphone. Please note
the slack after the connector.

A connector tightening tool is
supplied with each adapter

A connector tightening tool is supplied
with each adapter and is to be turned
clockwise.

·Position your hand with the boom between
the ear hooks and turn the boom around in
the loop. Take your hand with the boom
under the headband and draw it towards you.

· Secure the microphone boom into the two
clips next to the ear hook beneath which
the boom is to be mounted. Next, secure
the boom in the clip in the middle of the
headband. This clip is movable and should
be placed near the end of the microphone
boom, before the cable relief (where the

soft cable begins to be visible). The remai­ning two clips are not used (unless two
booms are to be mounted on the same
headband).

The soft cable must not be attached
into the clips. The clips are sharp and
you will risk damaging the cable.

9

the cable than the standard MicroDot con­nector 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 tool, and assembly
tool and assembly guide can be acquired.
Various wireless systems require the use of
electronic components inside the adapter
to optimise the signal level, the DC-offset
filtering and powering of the built-in micro­phone preamplifier. Using the adapters
from DPA Microphones ensures the correct
electronic circuit with the listed types of
wireless systems at all times. Do not
attempt to employ non-standard adapters
or connectors as you might damage the
microphone preamplifier.

Adjusting the 4088 headband

The headband mount is telescopic and is
easily adjusted to fit almost any headsize.
The mount can also be widened by carefully
expanding the distance between the ear
hooks.

The 4088 headband is supplied with the
boom mounted.
To change sides simply click the boom out
of the clips and follow the instructions
below.

· Hold the boom in your right hand when
mounting on the right side and vice versa.
Hold the boom by the cable relief.

8

MicroDot connector

Tighten here

Not here

✗

Take up the 4088 and adjust the size of the
headband so that it fits the size of your
head: Start with mounting an oversized
headband and use both hands simultane­ously, holding your index fingers on the
back of the headband while pushing in the
ear hook parts inwards with your thumbs.
The ear hooks are also adjustable.

If you want the position of the microphone
boom to be altered at this point, adjustments
are still possible, simply by drawing the boom
while holding a firm grip with the other hand
on the headband. Do not bend by holding
on to the capsule itself. Instead, bend the
wire boom, making a smooth curve with
your thumb, to best fit the profile of the
face at the corner of your mouth.

Correct mounted 4088

1110

1312

SPECIFICATIONS

Directional characteristics:

Cardioid

Cartridge type:

Pre-polarized condenser element with verti­cal diaphragm

Principle of operation:

Pressure gradient

Power supply:

Min 5V – max 50V through the adapter sys­tem from DPA Microphones

Frequency range:

20Hz – 20kHz (± 2dB between 500 Hz and
20 kHz; 4-6 dB soft boost at 15 kHz)

Sensitivity (± 3dB at 1kHz):

Nominally 6 mV/Pa

Equivalent noise level A-weighted:

Typ. 26dB(A) re. 20µPa
(max.28dB(A))

Equivalent noise level ITU-R BS. 468-4:

Typ. 38dB (max. 40dB)

Max SPL:

144 dB SPL peak before clipping

Total Harmonic Distortion:

123dB SPL peak (<1% THD)
120dB SPL RMS sine (<1%THD)

Polarity:

Positive going sound pressure produces
positive going voltage on MicroDot pin.

Operating temperature range:

-10 to 45°C (+14 to 113°F)

Output impedance:

30-40 Ohm

Cable drive capability:

Up to 300m (984ft)

Microphone length: 11mm (0.5in)

Microphone diameter: 5.5mm (0.25in)

Weight: 14g (0.49oz) ncl. cable, windscreen,

and MicroDot connector

Finish: Black or beige

5 dB

2,5KHz

1KHz

5KHz

Polar pattern. Directional characteristics of Cardioid Headband 4088

Typical on-axis frequency response of Cardioid Headband 4088

0°

180°

Parts for 4088 headband
AHM6000

Adjustable Headband Mount, Beige

AHM6001 Adjustable Headband Mount, Black
MMB4088-B Boom for Cardioid Headband,

Black

MMB4088-F Boom for Cardioid Headband,

Beige

Miniature Microphone Amplifier
MMA6000

Microphone Summation System
MSS6000

Miscellaneous
DQA0035

Tool for MicroDot

DUA6010 Sweat Stopper, Beige, 10pcs.
DUA6011 Sweat Stopper, Black, 10pcs.
DUA6015 Clips for AHM6000, Beige, 5pcs.
DUA6016 Clips for AHM 6001, Black, 5pcs.

15

ACCESSORIES AVAILABLE

Miniature Windscreens
DUA0560

5pcs, Black

DUA0561 5pcs, Red
DUA0562 5pcs, Blue
DUA0563 5pcs, Yellow
DUA0564 5pcs, Green
DUA0566 5pcs, White
DUA0567 5pcs, Beige
DUA0570 7pcs, Colour Mix

Connection Adapters
DAD3050

TOA WM360/4310 (for low DC

Microphones)

DAD3051 Ramsa WX-RP410 (for low DC

Microphones)

DAD3050 AKG PT40 (for low DC Microphones)
DAD6001 MicroDot to 3-pin XLR (P48)
DAD6001-BC MicroDot to 3-pin XLR (P48) w.

Belt Clip

DAD6002 Sennheiser BF1083-U/BF1053-U
DAD6003 Sennheiser SK50/SK

250/SK3063

DAD6004 Audio Ltd. Tx 2000/Tx 2020
DAD6006 Beyerdynamic

TS42/TS85/TS190/TS900

DAD6007 AKG PT 300
DAD6008 Sony WRT820/WRT860
DAD6009 Samson CT-2/TX-3/UT4/UT5/UT6
DAD6010 Shure U1/UT1/SC1,TOA WM4300
DAD6011 Vega T-66/T-677,Shure U1L
DAD6012 Lectrosonics M185
DAD6013 Micron TX501.x/TX502.x
DAD6014 Pastega TMA16/TMU20 (2 wire

preset)

DAD6015 Veg a T-3 7
DAD6017 AKG PT 40/60/80/81, Samson

UT1L/ VT2L

DAD6018 Pastega TMA16/TMU20 (3 wire

preset)

DAD6019 Sony Freedom WRT805,

Sennheiser Evolution Series

DAD6020 Postar, Telex UHFUB12
DAD6021 AT ATW-T101 (System U100),

Lectrosonics UHF systems for low SPL

DAD6022 Audio-Technica, ATWT51 (1400 Series)
DAD6024 MicroDot to 3-pin XLR (P48) w.

Mid Range Attenuation

DAD6025 Micron TX700
DAD6026 Beyerdynamic TS500/600,

Trantec

DAD6027 Beyerdynamic OPUS 100-200
DAD6028 Audio-Technica ATWT75 (7000

Series)

DAD6030 Electro-Voice CSB-1000 (RE1)

TELEX

DAD6032 Beyerdynamic TS800, Mipro

ACT707T/TE/TM/TS/MT103/303/801/808

Miniature Power Supplies
MPS6001

1-channel, 3-pin XLR

MPS6010 2-channel, 3-pin XLR
MPS6020 2-channel, Phono
MPS6030 2-channel, Mini-Jack
MPS6040 2-channel, 1⁄4 in. Jack

Extension Cables
DAO6005

3.5m

DAO6010 10 m
DAO6020 20m

14

SERVICE & REPAIR

Products from DPA Microphones are
extremely stable, and there should not be
any significant change in the specifications
with time and use. If, however, you are not
totally satisfied with the characteristics
exhibited by these products, contact your
nearest DPA Microphones representative
for further details of service and the repair
facilities that are available.
DPA Microphones has a maximum seven
working days in-house service policy, usually
ensuring that no more than seven working
days will elapse from the day we receive
the item for service to the day we are
ready to return it to you. Please contact
DPA Microphones for your nearest repre­sentative on

TEL: + 45 48 14 28 28
FAX: + 45 48 14 27 00

You can also get in touch with
DPA Microphones at:

[e-mail]

or visit our website at

www.dpamicrophones.com

WARRANTY

All products from DPA Microphones are
covered by a two-year limited warranty on
both mechanical functionality and docu­mented specifications as long as the items
are not mistreated, abused or modified in
any way. In case of a warranty claim your
invoice is your warranty registration.

CE STANDARD

The CE-mark guarantees all products con­form with relevant standards approved by
the European Community. The products
described in this User’s Manual comply with
current relevant standards when used with
cables from DPA Microphones. EMC
Directive: 89/336/EEC, amended by
92/31/EEC and 93/68/EEC Low Voltage
Directive: 73/23/EEC, amended by
93/68/EEC.

Product features and specifications are subject to change without notice.

16

DPA Microphones A/S
Gydevang 42-44
DK-3450 Alleroed, Denmark
Tel: [phone]
Fax: [phone]
[e-mail]
www.dpamicrophones.com

DPI 4088