DPA Microphone Type 4021, Type 4022, Type 4023, Type 4026, Type 4027 User's Manual

U S E R’ S M AN UA L

Compact Cardioid Microphones

Type 4 021

Type 4 022

Type 4 023

Compact Wide Cardioid Microphones

Type 4 026

Type 4 027

Type 4 028

Included in kit solutions:

Type 352 1

CO N T E N TS

Technical Description 3
Care of Microphones 9
Full Specifications 12
Service and Repair 16
Warranty 16
CE Standard 16

1

4021 & 4027

4022 & 4026

4023 & 4028

2

T E C H N I CA L DESC RI PT I O N

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 pat­tern, 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 dista n c e
(see Fig. 4). Type 4026, 4027 and 4028 are designed to have a
linear on-axis response from 40Hz (±2dB) to 20kHz (+3/-1dB) meas­ured 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 perf o rmance 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 th e
c a rt r i d ge. For optimum stability the microphone cart r i d ge 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 pre­amplifier has a cable drive capability of up to 100 m after the XLR­connector (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 th e
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 fea­ture a triaxial Lemo-connector, for simple and safe atta c h m e n t
mounting of the microphones to DPA Compact Active Po l e s .

Important: The microphones will only operate within their
specifications if powered correctly.

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.

4

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

5