Shure BETA 181/S Instrument Mic

Description

The Shure BETA 181/S instrument mic is a Shure BETA RPM181/Pre preamplifier fitted with a Shure RPM181/S supercardioid capsule. The BETA RPM181/S capsule is ideal for snare drums, acoustic instruments and any other close-miking applications.

The Shure BERA 181 a multipurpose instrument microphone and can be used on a wide variety of applications, including guitars, bass and drums (overheads and snares). It has a small-diaphragm design that provides superior audio with textbook polar responses in a form factor compact enough to get close to the source in the tightest conditions. The BETA 181 has a precision-engineered, side-address design that features an innovative locking ring to provide secure connection between capsule and preamplifier with integrated XLR connections.

There are four different capsules available for the BETA 181 microphone: Cardioid (RPM181/C), supercardioid (RPM181/S), Bi-directional (RPM181/BI), Omni-directional (RPM181/S). This makes the BETA 181 an extremely versatile and cost-effective mic that allows the user to interchange capsules according to the application. (Additional capsules sold separately). It comes with mic clip, zippered carrying case and windscreen.

This microphone requires phantom power and performs best with a 48 VDC supply (IEC-61938). However, it will operate with slightly decreased headroom and sensitivity with supplies as low as 11 VDC.

• Cartridge Type: Electret condenser
• Polar Pattern: Supercardioid
• Frequency Response: 2020,000Hz
• Output Impedance: 110 ohm
• Sensitivity (open circuit voltage, @ 1kHz, typical: 49.5 dBV/Pa (2.5 mV)
• Maximum SPL (1kHz at 1% THD):
• 2,500 ohm load: 154.5dB SPL
• 1,000 ohm load: 152dB SPL

  Signal-to-Noise Ratio: 71.5dB

• Dynamic Range:
• 2,500 ohm load: 132.0dB
• 1,000 ohm load: 129.5dB
  Clipping Level @ 1 kHz, 1% THD:
• 2,500 ohm load: 10.5 dBV
• 1,000 ohm load: 7.5 dBV

  Self Noise (equivalent SPL,A-weighted, typical): 22.5 dB SPL-A

• Common Mode Rejection (2020,000kHz): 55dB
• Polarity: Positive pressure on diaphragm produces positive voltage on pin 2 with respect to pin 3
• Power Requirements 1152 V DC phantom power (IEC-61938): 2.4 mA, maximum
• Net Weight 145 g (5.1 oz.)
• Preamp dimensions (L x Dia.): 4.40" x .80", (124.46 x 20.32 mm)
• Capsule width: 1.36" (34.54 mm)