The Opus 54 has been designed for ”hands free“ applications that require a high quality and lightweight microphone.It is ideal for entertainers, dancers, drummers and keyboard players etc. The Opus 54 will interface with beltpack transmitters to provide a low profile neckworn microphone for aerobics instructors, theatre use and stage musicals. Its cardioid polar pattern allows a high gain before feedback. The Opus 54 features a rugged yet adjustable neckband and flexible ear bows that can be shaped for personal comfort with a secure fit. The Opus 54 is also suited for people who wear glasses.
Transducer type: Condenser (back electret)
Operating principle: Pressure gradient
Polar pattern: Cardioid
Frequency response: 40 – 17,000 Hz (close miking)
Open circuit voltage: 6 mV/Pa
Nominal impedance: approx. 800 ?
Load impedance: ? 4.7 k?
Max. SPL at f = 1 kHz, k = 1%, R = 1 k?: 132 dB
S/N ratio rel. to 1 Pa: 60 dB
A-weighted equivalent SPL: 26 dB
Connection: 4-pin Mini-XLR plug
Weight (without cable): 39 g