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The BETA 181/BI Figure 8 Compact Side-Address Instrument Microphone from Shure is a durable, small diaphragm, electret condenser microphone with an interchangeable capsule design. The Beta 181/BI ships with a figure 8 capsule for mono drum overhead and dual instrument sound source applications, as well as Blumlein stereo technique (pair of BETA 181/BI). The microphone features a wide frequency response and rugged build, making it great for the stage and recording studio.
Microphone
| Capsule | Electret Condenser |
| Diaphragm | 1.36" / 34.54 mm |
| Polar Pattern | Figure-8 |
Performance
| Frequency Range | 20 Hz to 20 kHz |
| Maximum SPL | 156 dB SPL |
| Impedance | 110 Ohms |
| Sensitivity | 2.6 mV/Pa |
| Dynamic Range | 133 dB |
| Signal-to-Noise Ratio | 71 dB |
| Equivalent Noise Level | 23 dB A-Weighted |
Power
| Operating Voltage | 11 to 52 V |
| Operating Current Consumption | 2.4 mA |
Physical
| Dimensions | ø: 0.8 x L: 4.9" / ø: 20.32 x L: 124.46 mm |
| Weight | 5.11 oz / 145 g |
Packaging Info
| Package Weight | 1.35 lb |
| Box Dimensions (LxWxH) | 10.2 x 5.1 x 3.5" |
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