Review on Dayton Audio RS100 4 Reference Full Range by Markus Calderon

I bought this driver to build a ham radio speaker for my Icom IC-7100. The sound performance of the IC-7100 as a modern DSP setup is too good for the tiny built-in speaker. Due to the setup's unique form factor, Icom does not manufacture suitable speakers. External ham radio speakers tend to be expensive and vary widely in quality, so I decided to make my own. I used an RS100-4 driver in a sealed box taped together from some old Radio Shack Minimus 0.5 cases, stuffed with wool from an old Bose speaker and treated with Duratex. The result sounds and looks great. This allows me to hear the full potential of the IC-7100's great sound and more. The frequency response is very flat at speech frequencies, which is an important factor for a communications speaker, and it even sounds pretty good when the IC-7100 is tuned to FM.