The Shure BETA 181 is an ultra-compact, small-diaphragm side-address condenser microphone, designed for discreet placement and control in live and studio environments. Featuring interchangeable cardioid, supercardioid, omnidirectional and bidirectional capsule options for superior versatility, the small diaphragm design provides superior audio with consistent, textbook polar responses in a form factor small enough to get close to the source in the tightest conditions.
• Interchangeable Polar Pattern Capsules Attach to a Compact Preamplifier with Integrated XLR Connections for the Ultimate In Low-Profile Application Flexibility (Each Beta 181 Ships with One Polar Pattern Capsule and One XLR Preamplifier
• 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
• Furnished with Stand Adapter, Windscreen and Carrying Case (Carrying Case will Securely Protect up to Four Polar Pattern Capsules)
• Cartridge Type: Electret Condenser
• Polar Pattern: Cardioid / Supercardioid / Omnidirectional / Bidirectional
• Frequency Response: 20 to 20,000 Hz
• Output Impedance: 110 Ohms
• Maximum SPL (1 kHz at 1% THD, 1k Ohms 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 k Ohms 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, 1k Ohms 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
• Net Weight: 145 g (5.1 oz.)
(1) Beta 181 Microphones
(1) Cardioid Capsule
(1) Supercardioid Capsule
(1) Omnidirectional Capsule
(1) Bidirectional Capsule
(1) Mic Clip
(1) Windscreen
(1) Operator's Instructions
(1) Carrying Case
