Samson owner manual R21 Polar Pattern, R21 Specifications

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.

		0º
	315º	0	45º
		5
		10
		15
		20
270º		dB		90º
250 Hz				2000 Hz
500 Hz				4000 Hz
1000 Hz	235º		135º	8000 Hz
		180º
	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

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