Superlux HMD-685A Overview
The HMD-685a Professional Intercom Headset and Boom Mic from Superlux is a single, ear-cup design that features an anti-vibration gooseneck boom microphone. It can be used with the Superlux IS-103 intercom set (sold separately) to satisfy the requirements of studio and broadcast productions.
The headset has a frequency response of 20 Hz to 20 kHz and provides clear detail for broadcasting sporting events, cable access television, houses of worship, event productions, and more. Additionally, the microphone features a dynamic, noise-compensating capsule and a frequency response of 50 Hz to 15 kHz. It is tailored for speech applications. The headset includes a 9.8′ cable that terminates with a 4-pin female connector (A4F).
Transducer principle：dynamic, closed
Frequency response：20～20,000 Hz
Sensitivity：96 dB SPL at 1 kHz, 1 mW Max.
Input Power：100 mW
Caliper pressure：approx. 4.5 N
Transducer principle：dynamic, cardioid
Frequency response：150～10,000 Hz
Output voltage：-64 dBV/Pa（0.6 mV/Pa）at 1 kHz