Samson R21 Manuel d'utilisateur télécharger pdf (Page 4)

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R21 Polar Pattern

R21 Specifications

Type Dynamic

Frequency Response 80 Hz - 12 kHz

Polar Pattern Cardioid

Output Impedance Rated at 500Ω

Sensitivity -53 dBV/pa (1.8 mv/pa)

Connector 3-pin gold plated balanced XLR male

Dimensions

Head length 2.125 in. / 53.97 mm

Main unit length 4.56 in. / 115.88 mm

Total length 6.85 in. / 169.8 mm

Weight 7 oz. / 217 g

In contrast, directional cardioid mics are specifically designed to accept mostly

signal coming from directly in front, and to reject signal coming from behind or

from the side. The cardioid pattern is utilized by the R21 (as shown in the illustra-

tion below). For this reason, the R21 excels in environments where there is a

good deal of unwanted ambient sound—it delivers those signals originating

directly in front of the mic capsule itself while rejecting those that originate from

behind.

The polar pattern also determines how prone a particular mic is to inducing feed-

back. Feedback is that characteristic nasty howling sound that occurs when a mic

is placed too close to a loudspeaker—the signal from the loudspeaker is fed into

the mic, then into the loudspeaker, then into the mic, over and over again until an

oscillating tone is generated. Because the cardioid pattern utilized by the R21 is

so good at rejecting signal not coming from directly in front of the mic, you’ll find

that use of the R21 greatly minimizes feedback problems.

Samson Technologies Corp. • 575 Underhill Blvd. • P.O. Box 9031 • Syosset, NY 11791-9031

Phone: 1-800-3-SAMSON (1-800-372-6766) • Fax: 516-364-3888

[email protected] • www.samsontech.com

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Samson R21 Manuel d'utilisateur Page 4