DPA 4021 User manual

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.

11
Correct placement of the SM4000 on a DPA 4021 or 4027.

12
FULL SP ECIF ICATIONS
Cartridge type:
4021, 4022 and 4023: Pre-polarized condenser Type DMM0056
4026, 4027 and 4028: Pre-polarized condenser Type DMM0058
Principle of operation:
Pressure gradient
Power Supply:
Phantom P48
Frequency range:
4021, 4022 and 4023: On-axis: 40Hz to 20kHz ±2dB at 30 cm
4026, 4027 and 4028: On-axis: 40Hz ±2dB to 20kHz +3/-1dB
at 60 cm with a max. 3 dB soft boost at 10 – 15 kHz.
Phase response:
Phase matching between any two microphones: ±15°
(100Hz to 20kHz)
Directional characteristics:
4021, 4022 and 4023: First order cardioid
4026, 4027 and 4028: Wide cardioid
Sensitivity:
Nominally 7mV/Pa (at 1kHz)
Equivalent noise level A-weighted:
Typ. 20dB(A) re. 20µPa
Equivalent noise level CCIR 468-1:
Typ. 25dB (max. 28dB)
Max SPL before clipping occurs:
145dB SPL peak
Total Harmonic Distortion:
110 dB SPL peak (<0.5% THD)
Preamplifier:
Output impedance:
<300 Ohm
Cable drive capability:
Up to 100m
Difference frequency distortion:
(DF2, DF3, Df = 70Hz) <0.5% at 110dB SPL peak

13
Influence of vibration:
<71dB equivalent SPL for 1m/s2in direction of greatest
sensitivity
Influence of magnetic field:
45dB equivalent SPL for 80A/m, 50Hz in direction of greatest
sensitivity
Operating temperature range:
-10 to +55°C (+14 to 131°F)
Dimensions:
Microphone length:
4021 and 4027: 31mm
4022 and 4026: 35mm; 52mm incl. cable relief
4023 and 4028: 30 mm; 71mm incl. connector
Microphone diameter:
19mm
Capsule diameter:
19mm
Weight:
4021 and 4027: 27.5g (without cable)
4022 and 4026: 30g (without cable)
4023 and 4028: 33g (without cable)
ACCESSORIE S INCLUDED
Microphone Holders & Suspension Mounts
SM4000 Suspension Mount
DUA0020 Small Windscreen for Ø19mm Microphone

14
ACCESSORIES AVAILABLE
Microphone Holders for Musical Instruments
CH4000 Microphone Holder for Cello
GM4000 Gooseneck Mount, 19mm
MB4000 Magnet Base
SAX4000 Microphone Holder for Saxophone and Horn
VH4000 Microphone Holder for Violin and Bass
Shock Mounts
CSM4000 Compact Shock Mount
TSM4000 Table Shock Mount
UA0897 Shock Mount
Shock Mount Rubbers
DDS0019 Rubber Mount 19mm, Extra Soft
Stereo Accessories
CXO4000 Compact XY and ORTF Stereo Holder
CXY4000 Compact XY Stereo Holder
EXY4000 Extension for Compact Stereo Holders
UA0837 Stereo Boom excluding Holders
Floor & Table Stands
CAP0400 Compact Active Pole, 400mm
CAP0750 Compact Active Pole, 750mm
CAP1250 Compact Active Pole, 1250mm
DUA0100 Stand Extension, 100mm
DUA0250 Floor Base, Ø250mm
DUA0500 Stand Extension, 500mm
FGS4000 Flamingo Grand, Single Stand
FGT4000 Flamingo Grand Twin, Double Stand
FJS4000 Flamingo Junior, Short Single Stand
SJD4000 Swivel Joint, Double
SJS4000 Swivel Joint, Single
TB4000 Table Base
Windscreens
DUA0022 Twin Windscreen for Ø19mm Microphone

15
3521: COMPAC T CARDIOID STEREO KIT, P48
Professional Piano Miking Solution
The 3521 is a complete stereo kit with two 4021 Compact Cardioid
Microphones carefully matched within 2dB on frequency response,
sensitivity and self-noise. Complete with accessories, this kit is
designed especially for low profile mounting directly inside a piano.
With the XY/ORTF holder, the kit is also exceptional as a compact
stereo pair for applications such as overhead for drums, horn or
string sections, choirs, main or additional spot pair for small or big
acoustic ensembles.
The complete kit is supplied in a sturdy carrying case and includes
the combination XY/ORTF holder, 2 gooseneck mounts and 2 mag-
net bases for mounting on metal surfaces.
3521 KIT I NC LUDES
2 x 4021 Compact Cardioid Microphone (matched)
2 x GM4000 Gooseneck Mount, 19mm (0.75in)
2 x MB4000 Magnet Base
1 x CXO4000 Compact XY and ORTF holder

16
SERVIC E & 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 charac-
teristics 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 the item for
service is received and accepted to the day we are ready to return
it to you. Please contact DPA Microphones for your nearest repre-
sentative on
Tel: [phone]
Fax:[phone]
You can also get in touch with DPA Microphones via the internet
using e-mail [email protected]
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 to 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