Shure RPM181/BI Bidirectional Capsule for Beta 181 Microphone
Shure RPM181/BI Bidirectional Capsule for Beta 181 Microphone
Bi-directional capsule replaces the capsule for a Beta 181 microphone. The bi-directional capsule is ideal for mono-drum overheads and dual instrument sound source applications.
Features:
- Bidirectional capsule for Beta 181
- Wide dynamic range
- High SPL handling
- No crossover distortion
- Exceptional low-frequency reproduction
- Locking ring provides secure connection
- Steel grille prevents damage to capsule
- Lightweight (5.1 oz) design with preamp
Specifications:
- General:
- Type: Condenser
- Frequency Response: 20 to 20,000 Hz
- Polar Pattern: Bidirectional
- Sensitivity: -51.0 dBV/Pa (2.6 mV)
- Output Impedance: 110 ohms (at 1 kHz)
- Signal to Noise Ratio: 71.0 dB
- Self Noise: 23.0 dB SPL-A
- Common Mode Rejection: ≥55 dB
- Polarity: Positive pressure on diaphragm produces positive voltage on pin 2 with respect to pin 3
- Power Requirements: 11-52 V DC phantom power (IEC-61938), 2.4 mA maximum
- Weight: 5.1 oz (145 grams)
- Maximum SPL:
- 1000 Ohm Load: 153.5 dB
- 2500 Ohm Load: 156.0 dB SPL
- Dynamic Range:
- 1000 Ohm Load: 130.5 dB
- 2500 Ohm Load: 133.0 dB
- Clipping Level:
- 1000 Ohm Load: 7.5 dBV
- 2500 Ohm Load: 10.5 dBV
