Shure B181C Cardioid Microphone Capsule for Beta 181

Cardioid capsule for Beta 181 microphone.

Cardioid capsule replaces the capsule for a Beta 181 microphone. The cardioid capsule is ideal for drum overhead, piano, acoustic instrument applications, and studio recording.

The Shure Beta 181 is an ultra-compact, small-diaphragm side-address condenser microphone, designed for discrete 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.

Features:

• Interchangeable polar pattern capsules attach to a compact XLR 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
• Beta 181/C (cardioid) for drum overhead, piano, acoustic instrument applications
• Frequency response tailored for wide dynamic range applications for use in high SPL environments

Specifications

• Cartridge Type: Electret Condenser
• Polar Pattern: Cardioid
• Frequency Response: 20 to 20,000 Hz
• Output Impedance: 110 Ω
• Maximum SPL (1 kHz at 1% THD, 1kΩ load): 149.0 dB SPL
• Signal-to-Noise Ratio: 73.5 dB
• Dynamic Range (at 1 kHz, 1 kΩ load): 128.5 dB
• Clipping Level (1 kHz at 0.25% THD, 1kΩ load): 7.5 dBV (2.4 V)
• Self-Noise (equivalent SPL, A-weighted, typical): 20.5 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