DPA DPA 3530-A Руководство пользователя - Страница 3

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1. Full Specifications

TECHNICAL DESCRIPTION

The cartridge

Types 4003 and 4006 are omnidirectional (pressure) microphones that

use a 16 mm diameter prepolarized condenser cartridge. The cartridge

has low self noise (typical 15 dB(A) re. 20 µPa) and high sensitivity (4003:

40 mV/Pa, 4006-TL: 35 mV/Pa and 4006: 10 mV/Pa). For optimum stability

the microphone cartridges have undergone a special pre-aging process which

stabilizes all tensions in the materials as well as the polarization voltage.

The preamplifiers

Types 4003, 4006 and 4006-TL are acoustically identical, but differ in

their preamplifier powering system.

The 4003 is powered with 130 V via the HMA5000 High-Voltage

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 10 dB higher SPL

than similar microphone types powered through conventional P48

systems (4003: 154 dB SPL peak and 4006: 143 dB SPL peak).

Furthermore, the 4003 together with the HMA5000 is a totally trans-

formerless system and therefore has an extended low-frequency

handling capability (10 Hz to 20 kHz ± 2 dB).

The 4006 is powered via a standard P48 system and is equipped with

a standard 3-pin XLR-connector (see Fig. 2 for pin designation). Types

4003 and 4006 use state of the art low-noise preamplifier technology.

The preamplifiers are driven with unity gain to keep noise as low as possible.

The 4006-TL is equipped with a state-of-the-art transformerless pream-

plifier. All components in this construction are very carefully selected to

fulfil the demand for optimal neutral timbre, relaxed purity, tight and

focused imaging and extremely low distortion even at very high sound

pressure levels. The transformerless design has an extended low-fre-

quency handling capability (10 Hz to 20 kHz ±2 dB). The 4006-TL is pow-

ered via a standard 48 V Phantom Power supply and has a standard 3-

pin XLR connector. See Fig. 3 for pin designation. The output is impedance

balanced between pin 2 and pin 3, with pin 2 carrying the signal.

An attenuator is applied in the output amplifier to prevent overloading

of input sections in the following equipment such as mixing consoles

etc. When the button is pushed in, the output is attenuated by 20 dB.

All microphones come with an individual calibration chart of the self

noise, sensitivity and the individual frequency response.

Ground

Fig. 1. External view of the output connector of the Type 4003.

Important:

The microphone will only operate within it' s specifications if

powered correctly.

Gro u n d

Fig. 2. External view of the output connector of the Type 4006 and

4006-TL.

-20

Fig. 3. The switch on the XLR-connector of Type 4006-TL is used to

select between 0 dB and 20 dB attenuation. Switch pressed in

results in 20 dB attenuation.

Signal

130 V DC

Preamplifier Supply

Signal