Heil Sound HMM Dynamic Hand Microphone Clamshell with PTT

The newly designed HMM brings new technology to the hand microphone. No question when you place a microphone element inside a clam shell. The result is a hollow muffled sound but Amateur Radio operators have lived with it for decades. To solve this problem, we installed a grill on the top of the microphone that detunes the internal resonance of the housing. We came up with a very special full range microphone element with great speech articulation. The result is a phenomenal hand microphone. A very flexible but sturdy coil cable terminates as all of our headsets with 1/8” male for the microphone and a ” male for the PTT control.

Technical Specifications

Generating Element
Dynamic iC | iC Electret
Output Connection
Mic: 1/8 Mono, PTT: 1/4 Male | Mic: 1/8 Mono, PTT: 1/4 Male
Frequency Response
80 Hz - 15 kHz |35 Hz - 12 kHz
Sensitivity
10dB @ 2 kHz | -52 dB @ 1,000 Khz
Polar Pattern
Cardioid |Cardioid
Impedance
600 Ohms Unbalanced | 600 Ohms Unbalanced
Finish
Black | Black
Weight
6.5 oz | 6.5 oz