The S1RM's adopt a transmissionline cabinet design and they have no electronic crossover. A single 4" full-range driver with molecular vibration technology is used to provide fequencies between 40Hz - 22KHz. The driver flexes thoughout the frequency range to produce crisp, clean treble frequencies without being sharp or cheeky and tight rigid bass register frequencies.

Reproduction of female vocals are detailed and enjoyable to the ears, unlike many two-way speakers where the tweeter can make a feminine vocal sound harsh and too bright. Mid range frequencies have excellent definition and provide a wide sense of depth and display superb stereo imaging.