Shure B181 Condenser Microphone with Changeable Capsule
Shure B181 Condenser Microphone with Changeable Capsule
This Beta 181 is a multipurpose instrument microphone and can be used on a wide variety of applications including guitars, bass, and drums (overheads and snares.) A total of four different capsules (Cardioid, Supercardioid, Bi-directional, Omni-directional) are available, allowing you to interchange them according to application.
Features:
- Interchangeable polar pattern capsules attach to a compact preamplifier with integrated XLR connections
- Precision-engineered, compact side-address design features innovative locking ring to provide secure connection between capsule and preamplifier
- Frequency response tailored for wide dynamic range applications for use in high SPL environments
Specifications:
- Cartridge Type: Electret Condenser
- Polar Pattern: Cardioid / Supercardioid / Omnidirectional / Bidirectional
- Frequency Response: 20 to 20,000 Hz
- Output Impedance: 110 Ω
- Maximum SPL (1 kHz at 1% THD, 1kΩ load):
- Cardioid: 149.0 dB SPL
- Supercardoid: 152.0 dB SPL
- Omnidirectional 154.0 dB SPL
- Bidirectional 153.5 dB SPL
- Signal-to-Noise Ratio(referenced at 94 dB SPL at 1 kHz;S/N ratio is difference between 94 dB SPL and equivalent SPL of self noise, A-weighted):
- Cardioid: 73.5 dB
- Supercardoid: 72.5 dB
- Omnidirectional 70.5 dB
- Bidirectional 71.0 dB
- Dynamic Range (at 1 kHz, 1 kΩ load):
- Cardioid: 128.5 dB
- Supercardoid: 129.5 dB
- Omnidirectional 130.5 dB
- Bidirectional 130.5 dB
- Clipping Level (1 kHz at 0.25% THD, 1kΩ load): 7.5 dBV (2.4 V)
- Self-Noise (equivalent SPL, A-weighted, typical):
- Cardioid: 20.5 dB
- Supercardoid: 22.5 dB
- Omnidirectional 23.5 dB
- Bidirectional 23.0 dB
- Common Mode Rejection (20–20,000 Hz): ≥55 dB
- Polarity: Positive pressure on diaphragm produces positive voltage on pin 2 with respect to pin 3
- Power Requirements 11–52 VDC phantom power (IEC-61938), 1.2 mA
- Weight: Net-145 g (5.1 oz.)
