Beyerdynamic Opus 51 Electret Condenser Boundary Microphone

Opus 51 Electret Condenser Boundary Microphone description:

The Opus 51 is suitable for studio and stage applications such as miking instruments and is particular benefit when used upright or for grand pianos where the microphone can be placed internally. The Opus 51 can also be used within a round-table discussions system as well as stage and film applications for ambience recording.

The microphone element is integrated into a solid metal plate with a heavy-duty protective surface resisting accidental damage from kicks or footsteps.

The half- spherical polar pattern of the Opus 51 has a very wide and even pickup angle and is suitable for miking large sound sources simplifying the choice of microphone as it is not dependent on the distance to the sound source.

A power supply (CV1 included) is required to power the microphone that can also be used as an adapter to connect the microphone to any other phantom power source.

Features:

• Semi-spherical polar pattern
• Linear frequency response
• Small dimensions
• Battery (via optional ZCV unit for CV1 PSU) or phantom powering
• Step-proof
• Diameter: 70 mm / Height: 10.5 mm

Specifications:

• Transducer type: Condenser (back electret)
• Operating principle: Pressure
• Frequency response: 30 - 20,000 Hz
• Polar pattern: Semi-spherical
• Open circuit voltage at 1 kHz: 7 mV/Pa
• Nominal impedance: 250 ½
• Load impedance: 1 k½
• Max. SPL at 1 kHz: approx. 131 dB
• S/N ratio rel. to 1 Pa: approx. 60 dB
• A-weighted equivalent SPL : approx. 26 dB
• Power supply: 11 - 52 V phantom power
• Power consumption: 3.6 mA
• Connection: 4-pin LEMO-plug - XLR via supplied CV1 PSU
• Dimensions: Diameter: 70 mm. Height: 10.5 mm, Weight: 85 g