DPA 4021 Bedienungsanleitung

CONTENTS

Technical Description 3

Care of Microphones 9

Full Specifications 12

Service and Repair 16

Warranty 16

CE Standard 16

1

USER’S MANUAL

Compact Cardioid Microphones

Compact Wide Cardioid Microphones

Included in kit solutions:

Type 402 1

Type 4022

Type 4023

Type 4026

Type 4027

Type 4028

Type 352 1

2

4021 & 4027

4022 & 4026

4023 & 4028

TECHNICAL DESCRI PTION

The cartridge

Types 4021, 4022, 4023, 4026, 4027 and 4028 are Cardioid

(Pressure gradient) microphones that use the same microphone

capsule as the standard microphones Types 4011, 4012, 4015 and

4016. The Compact Cardioid Microphones use a 19mm diameter

prepolarized pressure gradient condenser microphone cartridge.

Type 4021, 4022 and 4023 offer a first order cardioid pick-up pat-

tern, the Type 4026, 4027 and 4028 offer a wide cardioid pattern

(see Fig. 2 & 3).

The diaphragm is highly resistant to the most aggressive kinds of

humidity. The large spacing between the diaphragm and the back

plate in this cartridge makes the microphone highly insensitive to

temperature influence and allows greater SPL handling before

clipping occurs.

Type 4021, 4022 and 4023 are designed to have a linear on-axis

response from 40Hz to 20kHz (±2dB) measured at 30cm distance

(see Fig. 4). Type 4026, 4027 and 4028 are designed to have a

linear on-axis response from 40Hz (±2dB) to 20kHz (+3/-1dB) meas-

ured at 60cm distance (see Fig. 5) and are furthermore intentionally

calibrated with a slight high-frequency soft boost.Great attention

has also been paid to the microphone’s off-axis performance during

the design process (see Fig. 4 & 5 ).

The diaphragm is protected from dust by an acoustically transparent

net behind the front protection grid and inside the back port of the

cartridge. For optimum stability the microphone cartridge has

undergone a special pre-aging process, which stabilizes all tensions

in the materials as well as the polarization voltage.

The preamplifier

The Compact Cardioid and Compact Wide Cardioid Microphones use

built-in ultra-small, thick-film preamplifiers with unity-gain, low noise

FET-amplifier technology. The thick-film technology enables the

microphone cartridge to be mounted on an exceptionally compact

microphone housing with the preamplifier mounted directly behind

the microphone cartridge. A circuit of passive components in the

standard 3-pin XLR connector adapts the P48 phantom powering,

separates the supply voltage from the audio signal and acts as an

3

impedance balancing circuit for optimum noise immunity. The pre-

amplifier has a cable drive capability of up to 100 m after the XLR-

connector (See Fig. 1 for pin designation).

All microphones come with an individual calibration chart of the

selfnoise, sensitivity and the individual frequency response.

The mechanical design

Types 4021, 4022 and 4023 are acoustically identical as are the

4026, 4027 and 4028. They only differ in their mechanical design.

All Compact Cardioid Microphones are delivered with 5m of

extremely flexible, high quality microphone cable as standard.

The 4021 and 4027 cable is side-mounted on the microphone and

the 4022 and 4026 cable is rear-mounted. The 4023 and 4028 fea-

ture a triaxial Lemo-connector, for simple and safe attachment

mounting of the microphones to DPA Compact Active Poles.

Important: The microphones will only operate within their

specifications if powered correctly.

4

Fig. 1. External view

of the output socket

of the standard 3-pin

XLR-connector used

in the Types 4021,

4022, 4023, 4026,

4027 and 4028.

5

Fig. 2. Directional characteristics of Types 4021, 4022 and 4023.

Shifts between emphasized circles indicate 10dB steps

Fig. 3. Directional characteristics of Types 4026, 4027 and 4028.

Shifts between emphasized circles indicate 5dB steps

6

Fig. 4. On-and off-axis responses of Types 4021, 4022 and 4023

measured at 30cm.

Fig.5 On-and off-axis responses of Types 4026, 4027 and 4028

measured at 60cm.

7

Fig. 6. The proximity effect exhibited by the Types 4021, 4022

and 4023.

Fig. 7. The proximity effect exhibited by the Types 4026, 4027

and 4028.

8

Fig. 8. On-axis amplitude and phase responses of Types 4021, 4022,

4023, 4026, 4027 and 4028 plotted using a linear frequency axis

for evaluation of the phase response.

9

CARE OF M ICROPHONES

It is important to bear in mind the following points with regards to

mounting, microphone care and the use of accessories:

The microphone cartridge is tightly secured to the main body

housing. No attempt should be made to remove it. If a replacement

cartridge is required, contact your local DPA Microphones

representative.

Use of windscreen is recommended when microphones are used

in dirty or dusty environments.

When not in use, the microphone should be disconnected and

kept in the case supplied.

The Compact Series Microphones are delivered in a rugged case

together with a reel for the cable. Inside the reel there is room for

both the microphone and the XLR-connector for maximum protec-

tion. When packing the microphones, first place the microphone

and the XLR-connector inside the reel, then roll up the cable.

The Compact Series Microphones are delivered together with the

SM4000 Suspension Mount for applications where the micro-

phones need to be suspended from their own cable. To position

the microphone you can bend and rotate the SM4000.

10

First place the microphone and the XLR-connector inside the reel,

then roll up the cable.

Dieses Handbuch passt für folgende Modelle

10

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