Shure RPM181/C Cardioid Capsule for BETA 181 Microphone

Description

The Shure BETA 181/C is a cardioid capsule for the versatile Shure BETA 181 microphone. The RPM181/C is ideal for drum overhead, piano, acoustic instruments, and M/S stereo recording (paired with the Shure BETA 181/BI)

The Shure BETA 181 (sold separately) 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.

There are four different capsules available for the BETA 181 microphone. This is the Cardioid (RPM181/C) version. There are also Supercardioid (RPM181/S), Bidirectional (RPM181/BI) and Omnidirectional (RPM181/O) versions (additional capsules sold separately). This makes the BETA 181 an extremely versatile and cost-effective mic that allows the user to interchange capsules according to the application.
Cartridge Type

• Electret Condenser

Polar Pattern

• Cardioid

Frequency Response

• 20 to 20,000Hz

Output Impedance

• 110 ohm

Sensitivity (open circuit voltage, @ 1kHz, typical

• 46.5dBV/Pa (2.4 mV)

Signal-to-Noise Ratio

• 73.5dB

Self Noise (equivalent SPL, A-weighted, typical)

• 20.5dB SPL-A

Common Mode Rejection (20 to 20,000Hz)

• 55dB

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): 2.4 mA, maximum

Capsule Width

• 1.36" (34.54 mm)