1
CONTENTS
Technical Description 2
Specifications 8
3552: Compact omni kit, 48V. 11
Care of Microphone 13
Service and Repair 16
War ranty 16
CE Marking 16
USER’S MANUAL
Compact Omnidirectional Microphones Ø16 mm
Included in kit solutions
Type
4051
Type
4052
Type 4053
Type 3552
32
TECHNICAL DESCRIPTION
The cartridge
Types 4051, 4052 and 4053 are Omnidirectional (pressure) microphones that use the same microphone capsule as the standard
microphones Types 4003 and 4006 - a 16 mm (0.63 in) diameter
prepolarized condenser cartridge. The diaphragm is a nickel foil
which has been coated with an ultra-thin polymer layer for optimum
corrosion resistance. The microphone housing is of German silver,
an alloy with a high content of nickel to match the stable thermal
qualities of the diaphragm. The cartridge has low self noise (typical
15 dB(A) re 20 mPa) and high sensitivity (30 mV/Pa). For optimum
stability the microphone cartridge has undergone a special preaging process which releases all tensions in the materials and stabilizes the polarization voltage.
The preamplifier
The Compact Omnidirectional Microphones use built-in ultra-small,
thickfilm 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 impedance balancing
circuit for optimum noise immunity. The preamplifier has a cable
drive capability of up to 100 m (3.94 in) 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.
Fig. 1. External view of the output socket of the standard 3-pin
XLR-connector used in the Types 4051, 4052 and 4053.
GroundSignal +
Signal -
3
2
1
Important: The microphones will only operate within their
specifications if powered correctly.
The mechanical design
Types 4051, 4052 and 4053 are acoustically identical, but differ in
their mechanical design. All Compact Omnidirectional Microphones
are delivered with 5 m (16.4 ft) of extremely flexible, high quality
microphone cable as standard. The 4051 cable is side-mounted on the
microphone and the 4052 cable is rear-mounted. The 4053 feature
a co-axial Lemo-connector, for simple and safe attachment mounting of the microphones to DPA Compact Active Poles.
5
The Near-field Grid
The Near-field Grid DD0251 on the microphone cartridge is
designed to have a linear on-axis frequency response for near-field
applications (see Fig. 2 for frequency responses measured with the
Near-field Grid). The grid is factory mounted but can be exchanged
with the DD0297 Diffuse-f ield Grid or the UA0777 Nose Cone.
Please be extremely careful not to touch the exposed diaphragm
when changing the grids.
The Diffuse-field Grid
The Diffuse-field Grid DD0297 is supplied as st andard. It is
designed for diffuse-field recordings, or recordings in the far f ield.
The grid gives a high-frequency boost on-axis of 6 dB around 15 kHz
(see Fig. 3) without adding noise to the recording. This boost gives
a linear diffuse-field (far field) response up to 15 kHz.
The Nose Cone
The Nose Cone UA0777 is included in the 3552 kit and is available
as an optional accessory for 4051, 4052 and 4053. As with the
Diffuse-field Grid DD0297, the Nose Cone is simply screwed onto
the microphone cartridge in place of the Near-field Grid DD0251.
When fitted, the Nose Cone gives the microphone a true omnidirectional response even at high frequencies (see Fig. 6) and a linear diffuse-field response (see Fig. 4). These qualities are useful at any
distance for an even tonal balance of sound arriving at all angles of
incidence, e.g. room reverberation or several sound sources placed
around the microphone. The diaphragm is placed in a slot behind
the solid cone and sound waves only have access to the diaphragm
through the side of the Nose Cone. This way the Nose Cone prevents an on-axis, high frequency sound pressure build-up on the
microphone, which is the reason for normal flat fronted omnidirectional microphones becoming more and more directional for higher
frequencies. There is however, a slight high frequency boost on
axis.
4
Fig. 2. On-axis and diffuse-field responses of Types 4051, 4052 and
4053 with the Near-field Grid DD0251 fitted.
Fig. 3. On-axis and diffuse-field responses of Types 4051, 4052 and
4053 with the Diffuse-f ield Grid DD0297 fitted.
25
dB
20
15
10
5
0
10 20 Hz 50 100 200 500 1 kHz 2 5 10 20 40D A B C Lin.
5 dB
Diffuse
Fig. 4. Diffuse-field response of Types 4051, 4052 and 4053 with
Nose Cones UA0777 fitted.
25
dB
20
15
10
5 dB
5
0
10 20 Hz 50 100 200 500 1 kHz 2 5 10 20 40 D A B C Lin.
Diffuse
On-axis
25
dB
20
15
10
5 dB
5
0
10 20 Hz 50 100 200 500 1 kHz 2 5 10 20 40 D A B C Lin.
On-axis
Diffuse
76
15 kHz
20 kHz
10 kHz
5 kHz
1 kHz
5 dB
0°
Fig. 5. Directional characteristics of Types 4051, 4052 and 4053
with the Near-field Grid DD0251 fitted.
Fig. 6. Normalized directional characteristics of Types 4051, 4052
and 4053 with Nose Cone UA0777 fitted.
Phase
Fig. 7. On-axis phase response of Types 4051, 4052 and 4053 plotted
using a linear frequency axis for evaluation of the phase response.
90º
Phase
0º
-
90º
30
20
10
40
kHz
0°
10 kHz
18 kHz
8 kHz
20 kHz
14 kHz
4 kHz
1 kHz
10 dB
Influence of vibration:
64 dB equivalent SPL for 1 m/s2in direction of greatest
sensitivity
Influence of magnetic field:
45 dB equivalent SPL for 80 A/m, 50 Hz in direction of
greatest sensitivity
Operating temperature range:
-10 to +70° C (+14 to 158° F)
DIMENSIONS:
Microphone length:
4051: 25 mm (0.98 in)
4052: 20 mm; 37 mm incl. cable relief (0.79/1.46 in)
4053: 28 mm; 69 mm incl. cable relief (1.10/2.72 in)
Microphone diameter:
16 mm (0.63 in)
Capsule diameter:
16 mm (0.63 in)
Weight:
4051: 22 g (0.78 oz) (without cable)
4052: 20 g (0.71 oz) (without cable)
4053: 22 g (0.78 oz) (without cable)
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SPECIFICATIONS
Directional characteristic:
Omnidirectional
Sensitivity:
Nominally 30 mV/Pa (at 250 Hz)
Cartridge type:
Pre-polarized condenser Type MM0042
Principle of operation:
Pressure
Power supply:
Phantom P48
Frequency range:
On-axis: 20 Hz - 20 kHz ±2 dB
Phase response:
Phase matching between any two microphones: ±10°
(50 Hz to 20 kHz)
Equivalent noise level A-weighted:
Typ. 15 dB(A) re 20 µPa (max. 17 dB(A))
Equivalent noise level ITU-R BS.468-4:
Typ. 27 dB (max. 29 dB)
Max SPL before clipping occurs:
135 dB SPL peak
Tot al Harmonic Distortion:
125 dB SPL peak (<0.5% THD)
Polarity:
Positive going sound pressure produces positive going volt
age on pin 2
Preamplifier output impedance:
<300 Ohm
Cable drive capability:
Up to 100 m (328 f t)
Difference frequency distortion:
(DF2, DF3, Df = 80 Hz) <1% at 130 dB SPL peak
Temperature coefficient:
-0,025 dB/°C at 25°C, 1013 hPa, 250 Hz
Static pressure coefficient:
-0,002 dB/hPa at 25°C, 1013 hPa, 250 Hz
3552: Compact Omni Kit, 48V
The 3552 is a complete stereo kit with two carefully matched 4052
Compact Omni Microphones. Together with the accessories, this kit
is designed especially for low profile mounting directly inside a
piano. The goosenecks can also be mounted directly on microphone stands for various A-B stereo applications such as a full
orchestra in a concert hall, choirs and other ambient recordings.
With the A-B stereo principle, time dif ferences will act as stereo
cues to enable the listener to “capture the space” in the recording,
and experience a vivid stereo image of the complete sound-field
with a full bass response.
The complete kit is supplied in a sturdy carrying case and includes 2
Gooseneck Mounts, 2 Magnet Bases for mounting on metal surfaces and 2 Nose Cones. The Nose Cone will give the microphone a
perfect omnidirectional response across the whole audio frequency range. (See Fig. 4 and Fig. 6)
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ACCESSORIES INCLUDED
Holders
SM4000 Suspension Mount
Acoustic Equalizers
DD0251 Near-field Grid, Silver
DD0297 Dif fuse-field Grid, Black
Windscreens
DUA0050 Small Windscreen for Ø16 mm (0.63 in) Microphone
ACCESSORIES AVAILABLE
Stands
CAP0400 Compact Active Pole, 400 mm (15.75 in)
CAP0750 Compact Active Pole, 750 mm (29.53 in)
CAP1250 Compact Active Pole, 1250 mm (49.21 in)
DUA0100 Stand Extension, 100 mm (3.4 in)
DUA0250 Floor Base, Ø250 mm (9.84 in)
DUA0500 Stand Extension, 500 mm (19.69 in)
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
Holders
CH4000 Microphone Holder for Cello
CSM4000 Compact Shock Mount
GM4050 Gooseneck Mount, 16 mm (0.63 in)
MB4000 Magnet Base
SAX4000 Microphone Holder for Saxophone
TB4000 Table Base
TSM4000 Table Shock Mount and Horn
UA0837 Stereo Boom excluding Holders
VH4000 Microphone Holder for Violin and Bass
Acoustic Ezualizers and Windscreens
UA0777 Nose Cone
UA0638 Windscreen for Ø16 mm (0.63 in) Microphone
Shock Mount Rubbers
DDS0016 Rubber Mount 16 mm (0.63 in), Extra Soft
CARE OF MICROPHONE
It is important to bear in mind the following points with regard to
mounting, microphone care and the use of accessories:
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 protection. When packing the microphones, first place the microphone
and the XLR-connector inside the reel, then roll up the cable.
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3552 KIT INCLUDES
2 x 4052 Omnidirectional Microphone, Ø16 mm (0.63 in),
Rear Cable (matched)
2 x GM4050 Gooseneck Mount, 16 mm (0.63 in)
2 x MB4000 Magnet Base
2 x UA0777 Nose Cone
Fig. 9. First place the microphone and the XLR-connector inside the
reel, then roll up the cable.
3552
1514
remove it. Do not try to unscrew or tighten the protection grids
with any kind of tool as both surface and thread might be damaged.
When changing grids or changing from grid to Nose Cone, be very
careful to avoid any contact with the diaphragm. Over time a visible
dust layer can build up on the diaphragm. Since the mass added is
extremely small and the influence on the frequency response is
negligible, the dust will not change the characteristics of the microphone. Therefore, cleaning the diaphragm is not necessary and
should not be attempted.
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.
Fig. 11. Be careful to avoid any contact with the diaphragm.
Do not touch
the diaphragm
"The compact series microphones" are delivered together with the
SM4000 Suspension Mount for applications where the microphones need to be suspended from their own cable. To position the
microphone you can bend and rotate the SM4000.
The microphone cartridge is tightly secured to the main body housing, and no attempt should be made to remove it. If a replacement
cartridge is required, contact your local DPA Microphones representative.
Types 4051, 4052 and 4053 are supplied with an additional Diffusefield Grid, Black DD0297 (see “Technical Description” and
“ Specifications”). On delivery, the normal protection grid is screwed
on to the cartridge housing and normal finger torque is required to
Fig. 10. Correct placement of the SM4000 on a DPA 4051.
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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.
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-MARKING
The CE-mark guarantees that the product conforms with relevant
Directives approved by the European Commission.
EMC Directive: 89/336/EC, amended by 92/31/EC and 93/68/EC
Low voltage Directive: 73/23/EC, amended by 93/68/EC
Product features and specifications are subject to change
without notice.
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