Shure BETA 181/O Instrument Mic

Description

The Shure BETA 181/O instrument mic is a Shure BETA RPM181/Pre preamp fitted with a Shure RPM181/O omnidirectional capsule. The RPM181/O capsule is ideal for use for ambient recordings or for instrument ensemble applications.

The Shure 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). 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/O). 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: Omnidirectional
• Frequency Response: 20 to 20,000 Hz
• Output Impedance: 110
• Sensitivity (open circuit voltage, @ 1 kHz, typical: -52.0 dBV/Pa (2.6 mV)
• Maximum SPL (1 kHz at 1% THD)
  2500 load: 157.0 dB SPL
  1000 load: 154.0 dB SPL
• Signal-to-Noise Ratio: 70.5 dB
• Dynamic Range:
  2500 load: 133.5 dB
  1000 load: 130.5 dB
• Clipping Level @ 1 kHz, 1% THD:
  2500 load: 10.5 dBV
  1000 load: 7.5 dBV
• Self Noise (equivalent SPL,A-weighted, typical): 23.5 dB SPL-A
• Common Mode Rejection (20 to 20,000 kHz): 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
• Net Weight 145 g (5.1 oz.)
• Mic dimensions (Length x Diameter):
• 4.40 in. x .80 in., (124.46 x 20.32mm)
• Capsule width: 1.36" (34.54mm)