Dpa 4012, 4011 User Manual
User’s Manual
Cardioid
Microphones
Type 4011
Type 4012
Cardioid Microphones
Type 4011, Type 4012
Technical Description . . . . . . . . . . . . . . . . . . . . . . . Page 2
Full Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . Page 5
Care of Microphones . . . . . . . . . . . . . . . . . . . . . . . Page 11
Service and Repair . . . . . . . . . . . . . . . . . . . . . . . . . Page 12
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 12
CE Standard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 12
Contents
User’s Manual
The cartridge
Directional microphones Type 4011 and 4012 uses a 19mm diameter
prepolarized pressure gradient condenser-microphone cartridge with a first
order cardioid pick-up pattern. The diaphragm is of PVDF with a vaporized
layer of aluminum. This material is non-hygroscopic, i.e. it does not absorb
water, and is highly resistant to the most aggressive kinds of humidity.
The microphone housing is German silver. The large spacing between the
diaphragm and the back plate in this cartridge makes the microphone highly
insensitive to temperature influence. The microphone cartridge is designed to
have a linear on-axis response from 40Hz to 20kHz ±2dB measured in 30cm
distance (see Fig. 4). Great attention has also been paid to the microphone’s
off-axis performance during the design process (see Fig. 4). The diaphragm is
protected from dust by an acoustical transparent net behind the front
protection grid and inside the back port of the cartridge. For optimum stability
the microphone cartridges have undergone a special pre-aging process which
releases all tensions in the materials and stabilizes the polarization voltage.
The preamplifier
Types 4011 and 4012 are acoustically identical, but differ in their preamplifier
powering system. The 4012 is powered with 130V via the HMA4000 HighVoltage Microphone Amplifier and has a modified 4-pin XLR-connector (see
Fig. 1 for pin designation). This special powering system enables the microphone
preamplifier to handle approximately 10dB higher sound pressure level than
similar microphone types powered through conventional P48 systems (4012:
168dB SPL peak and 4011: 155dB SPL peak). Both the 4011 and the 4012
together with the HMA4000 are transformerless. The 4011 is powered via a
standard P48 system and is equipped with standard 3-pin XLR-connector
(see Fig. 2 for pin designation), but has an attenuator switch built into the
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Technical Description
User’s Manual
connector (see Fig. 3). The 0dB/20dB attenuation allows the 4011 to be used
for close-miking high SPL sound sources without the output of the microphone overloading the console input amplifier. Types 4012 and 4011 use state
of the art low-noise preamplifier technology and are driven with unity gain.
All microphones come with an individual calibration chart of the self noise,
sensitivity and the individual frequency response.
The Passive Connection Converter
The PCC4000 Passive Connection Converter is an optional accessory, that
makes it possible to run High-Voltage Microphones on standard 48V phantom
power with reduced microphone specifications. The maximum reduction of
the microphone SPL handling capability will be 13dB and it is possible to
drive up to 100m of cable with the PCC4000 with the same specifications.
Like the High-Voltage Microphones the PCC4000 is transformerless. The input
connector is a modified 4-pin female XLR for connection directly to the microphone. The output is a standard 3-pin male XLR-connector for connection to
standard cables.
Important: The microphones will only live up to their specifications if
powered correctly.
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Technical Description
User’s Manual
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Technical Description
User’s Manual
Fig. 3
The switch on the XLR-connector of
Type 4011 is used to select between 0dB
and 20dB attenuation. Switch pressed in
results in maximum attenuation.
Fig. 1.
External view of the output
socket of the Type 4012.
Fig. 2.
External view of the output
socket of the Type 4011.
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