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マイク DPA 3529-AのPDF ユーザーマニュアルをオンラインで閲覧またはダウンロードできます。DPA 3529-A 13 ページ。 Omnidirectional microphones
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1. Full Specifications

The Free-field Grid, Silver

The Free-field Grid DD0251 on the microphone cartridge is designed

to have a linear on-axis frequency response for free-field applications

(see Fig. 4 for frequency responses measured with the Free-field Grid).

The grid is factory mounted but can be exchanged with the DD0297

Diffuse-field Grid or the UA0777 Nose Cone. Please be extremely

careful not to touch the exposed diaphragm when changing the grids.

The Diffuse-field Grid, Black

The Diffuse-field Grid DD0297 is supplied as standard. It is designed

for diffuse-field recordings, or recordings in the far field. The grid gives

a high-frequency boost on-axis of 6 dB around 15 kHz (see Fig. 5) with-

out adding noise to the recording. This boost gives a linear diffuse-field

(far field) response up to 15 kHz.

The Close-miking Grid (Silver, Trapezoid)

The Close-miking Grid DD0254 is available as an optional accessory.

Due to its high frequency roll-off (beginning at 12 kHz and -3 dB at 20

kHz) it is designed to provide a soft and smooth high-end response,

especially suitable for close miking applications. The response is altered

acoustically without adding any noise or distortion. See Fig. 6 for

frequency response.

The Nose Cone

The Nose Cone UA0777 is available as an optional accessory. As with

the Diffuse-field Grid DD0297, the Nose Cone is simply screwed onto

the microphone cartridge in place of the Free-field Grid DD0251.

When fitted, the Nose Cone gives the microphone a true omnidirec-

tional response even at high frequencies (see Fig. 11) and a linear dif-

fuse-field response (see Fig. 7). These qualities are useful at any dis-

tance for an even tonal balance of sound arriving at all angles of inci-

dence, 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 micro-

phone, which is the reason for normal flat fronted omnidirectional

microphones becoming more and more directional for higher frequen-

cies. There is, however, a slight high frequency boost on axis.

Acoustic Pressure Equalisers

Available as optional acoustical attachments are also the APEs –

Acoustic Pressure Equalisers. The APEs use diffraction to passively

modify the sound field near the microphone diaphragm, thus changing

the microphone's frequency response and polar response (see Fig. 14

and Fig. 15) without adding any electrical noise to the recording. The

size of the APE determines the acoustical changes of the micro-

phone. The APEs are precision made from a special compact nylon

material and will only fit the Types 4003 and 4006 fitted with the

standard Free-field Grid DD0251. There are three different APEs in

the range: L30B is a Ø 30 mm ball-shaped APE marked with a blue

dot, L40B is a Ø 40 mm ball-shaped APE marked with a green dot,

L50B is a Ø 50 mm ball-shaped APE marked with a red dot. The APEs

can be obtained separately or in the APE L6 Acoustic Modification kit.

See Fig. 17 for how to mount the APEs on the microphone.

The Passive Connection Converter

The PCC4000 Passive Connection Converter is an optional accessory

that makes it possible to run High-Voltage Microphones on standard

48 V phantom power with reduced microphone specs. The maximum

reduction of the microphone SPL handling capability will be 13 dB and

it is possible to drive up to 100 m 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 stan-

dard 3-pin male XLR-connector for connection to standard cables.